Text
Text manipulation utilities
260 tools · 8subcategories
Related workflow suites
2Chinese
Pinyin, idioms, poetry, traditional / simplified and stroke counting
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Chinese Pinyin Converter
Chinese characters to pinyin — with tone marks or numbers, supports simplified and traditional.
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Chinese Idiom Search
800+ everyday chengyu — pinyin, origin, usage.
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Chinese Poetry Search
Chinese classical poetry — 300+ hand-annotated Tang/Song/Yuan canon (唐诗宋词元曲) plus 80,000+ searchable Tang/Song/Shijing/Chuci poems on demand.
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Chinese Name Generator
Chinese name generator — meaningful Chinese names with pinyin, meaning, and stroke count.
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Chinese Stroke Counter
Chinese character stroke counter — count strokes for any hanzi, traditional or simplified.
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Chengyu Chain Game
Chengyu chain game with a 30,000+ idiom dictionary (full 汉语成语大词典 coverage). Start with any idiom; the computer continues with one whose first character matches your last.
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Traditional ⇄ Simplified Chinese Converter
Traditional ⇄ Simplified Chinese — fast, character-level, no API.
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Wuxing Name Recommender (Five Elements Naming)
Five Elements (Wuxing) name recommender — based on Bazi gaps, suggest characters that balance the missing elements.
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Handwriting Practice Sheet
Handwriting practice sheet generator — Chinese 米字格 / 田字格 / 四线三格 (English) PDF-ready printable.
English Learning
Vocabulary quizzes, grammar reference and collocations
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English Vocabulary Test
English vocabulary test — estimate your vocab size in 5 minutes, levels CET-4 / CET-6 / IELTS / TOEFL / GRE.
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English Grammar Rules Reference
English grammar rules reference — 60+ core grammar rules with side-by-side examples, common mistakes, bilingual explanations.
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English Collocations
English collocations reference — 200+ common verb + noun / adj + noun / verb + prep collocations with usage examples.
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English Irregular Verbs Reference
English irregular verbs reference — 200+ verbs with base / past / past participle, Chinese gloss, in-browser audio, pattern filter, and a flash-card practice mode.
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HSK Chinese Vocabulary Test
HSK Chinese vocabulary test — estimate your Mandarin level (HSK 1-6) in 5 minutes with real exam words.
100-Word Vocab Decks
Beginner-friendly 100-word starter packs across 14 languages
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Arabic 500 Essential Words
Arabic 500 essential A1–A2 MSA words — Arabic script with full ḥarakāt, DIN 31635 romanization, gender, three-form verbs, audio TTS.
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Dutch 500 Essential Words
Dutch 500 essential A1–A2 words — IPA + de/het articles + 6-person conjugation + audio TTS.
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French 600 Essential Words — DELF A1, A2 & B1 Core
600 French words covering the full DELF A1-A2 référentiel plus B1 core — IPA, gender, full Bescherelle conjugation (présent, passé composé, futur simple), free TTS audio, 16 life-context categories.
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German 500 Essential Words
German 500 essential words (A1-A2 + B1 core) with IPA, der/die/das, full Präsens, Präteritum, Perfekt, Partizip II for verbs, and browser TTS.
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Hindi 500 Essential Words
Hindi 500 essential A1–A2 words — Devanagari, IAST, IPA, gender, three-form verbs, audio TTS.
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Indonesian 500 Essential Words
Indonesian 500 essential A1–A2 words — KBBI spelling + Jakarta IPA + audio TTS. No tones, no conjugation.
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Italian 500 Essential Words
Italian 500 essential words (A1-A2 Plida) with IPA, gender, full verb conjugation, audio TTS.
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Japanese 500 Essential Words (JLPT N5 + N4)
Japanese 500 essential words covering JLPT N5 and N4, with kana, romaji, kanji and audio TTS.
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Korean 500 Essential Words (TOPIK I–II)
Korean 500 essential words spanning TOPIK I and TOPIK II — start speaking Korean today with Hangul, romanization, audio TTS, and full verb conjugations.
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Portuguese 500 Essential Words
Portuguese 500 essential words — A1 to A2 Brazilian Portuguese, with IPA, gender, conjugation, audio TTS.
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Russian 500 Essential Words (TORFL A1-A2)
Russian 500 essential words covering the full TORFL A1-A2 syllabus, with Cyrillic, stress marks, BGN/PCGN romanization, gender, full verb conjugation, and audio TTS.
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Spanish 500 Essential Words
Spanish 500 essential A1–A2 words — start speaking Spanish today, with pronunciation, example sentences, verb conjugations and audio TTS.
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Thai 500 Essential Words
Thai 500 essential A1–A2 words — Thai script + RTGS + IPA + 5 tones + audio TTS.
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Turkish 500 Essential Words
Turkish 500 essential A1–A2 words — Istanbul standard + IPA + vowel harmony + audio TTS.
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Vietnamese 500 Essential Words
Vietnamese 500 essential A1–A2 words — chữ Quốc ngữ + IPA + 6 tones + audio TTS.
Writing & Creative
Headlines, slogans, hashtags, cover letters and prompts
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Headline Analyzer
Headline analyzer — score your title's clickability, SEO length, emotional words, power words.
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Slogan Generator
Slogan generator — 30+ proven copywriting formulas, generate brand slogans in seconds, bilingual.
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Hashtag Generator
Hashtag generator — Instagram / TikTok / Twitter / Xiaohongshu / Weibo hashtags from your topic.
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Cover Letter Generator
Cover letter generator — fill 6 fields, pick a tone, get a tailored cover letter in 4 templates, bilingual.
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Resume Template Builder
Resume template builder — fill a form, get a clean PDF resume in 3 templates (modern / classic / minimal), bilingual.
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Interview Questions Bank
Interview questions bank — 300+ real questions across behavioral / technical / case / culture, with strong answer frameworks.
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Prompt Template Library
200+ prompt templates for ChatGPT, Claude, Gemini — copy-paste, browse by use case.
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System Prompt Builder
Turn role, task, constraints, and output rules into a structured system prompt you can copy.
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AI Eval Planner
Generate eval cases, pass criteria, and edge cases from an AI feature, risks, and user path.
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AI Model Comparison
AI model comparison — 20+ models (GPT / Claude / Gemini / Llama / Qwen) across price, context, speed, capabilities (2026).
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AI Token Counter
AI token counter — estimate token count for GPT / Claude / Gemini, with per-model cost calculator (2026 pricing).
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Content Refresh Checklist
Generate a prioritized content refresh checklist from URL, topic, and performance signals.
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Meta Description Brief Generator
Generate SEO meta description options from a page topic, keywords, and audience.
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YouTube Title Analyzer
Score a YouTube title for clarity, specificity, length, and keyword position.
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Weekly Report Generator
Weekly report generator — fill blanks, get clean markdown, no AI hallucination.
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Multicultural Name Generator
Random names from 11 cultures — Chinese, English, Japanese, Korean, Arabic, Russian + 5 European.
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Lorem Ipsum Generator
Classic Lorem Ipsum filler text — paragraphs, sentences, or words — copy in one click, browser-only
Text Utilities
Diff, dedupe, sort, count, regex and case conversion
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Text Diff
Compare two blocks of text — line-by-line additions, deletions, equal — colour highlighted, browser-only
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Text Deduplicator
Remove duplicate lines from any list — case-sensitive optional, whitespace-trim optional, count duplicates — browser-only
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Text Sorter
Sort lines alphabetically, numerically, by length, or reverse — case-sensitive optional — browser-only
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Word Counter
Count words, characters, sentences, paragraphs and reading time in any text — instant, browser-only
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Case Converter
Convert text between camelCase, snake_case, kebab-case, PascalCase, Title Case, UPPER, lower — instant, browser-only
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Regex Tester
Test JavaScript regex live — match highlighting, group capture, replace preview, flag toggles — browser-only
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URL Slug Generator
Turn any title into a clean URL slug — lowercase, dashes, ASCII-safe transliteration, multiline batch — browser-only
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Email Validator
Validate emails — RFC 5321 syntax + bulk paste + disposable detection + MX hint.
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ROT13 Encoder & Decoder
ROT13 / ROT47 / Caesar cipher — encode and decode in your browser, instant.
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Text to Binary Converter
Text to binary (and back) — UTF-8 aware, 8/16/32 bit grouping, emoji safe.
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Morse Code Translator
Text to Morse code and back — encode, decode, audio playback, ITU standard.
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HTML Entities Encoder
Encode/decode HTML entities — & < > " ' and all numeric refs — browser-only
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Markdown to HTML
Convert Markdown to clean HTML — headings, lists, code, links, images, tables — instant live preview, browser-only
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Markdown Editor with Live Preview
Markdown editor with live split-pane preview — GFM tables, fenced code with syntax highlight, math, emoji, table of contents, export as HTML / PDF-ready.
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Markdown Table Generator
Build Markdown tables visually — add/remove rows, column alignment, paste from Excel / CSV — browser-only
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Image to ASCII Art
Image to ASCII art — convert any image to text-based art with adjustable density and character set.
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ASCII Art Generator
Generate ASCII art from text — figlet-style banners, multiple fonts.
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Log Line Cleaner
Clean noisy logs by removing timestamps, ANSI colors, blank lines, long lines, or non-error entries in your browser.
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JSON Lines Formatter
Validate JSONL line by line, pretty-print it, convert to a JSON array, or export a CSV-like table locally.
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JSONPath / JMESPath Query Tester
JSONPath / JMESPath query tester — paste JSON, write a path, see matched values + matched paths highlighted live.
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JSON Schema Inferencer
Paste JSON or NDJSON samples and infer a Draft 2020-12 style schema with types, required fields, formats, enums, and examples.
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GraphQL Formatter & Minifier
GraphQL formatter + minifier — beautify query/mutation/subscription/schema, validate syntax, copy minified single-line for HTTP body.
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.env File Validator
.env file validator — parse Bash-style .env, detect dups / missing required / unsafe values / leaked secret patterns; cross-compare prod / staging / dev envs.
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ENV Secret Scanner
Scan .env files, config snippets, and CI logs locally for likely API keys, tokens, private keys, JWTs, and database URLs.
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LaTeX Equation Editor (Live Preview)
LaTeX equation editor live — type/paste LaTeX, see math rendered live via MathJax 3 (CDN), copy as SVG/PNG/Markdown/MathML, 30+ symbol palette.
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Kanji & Chinese Character Stroke Order Viewer
Kanji + Chinese character stroke order viewer — animated SVG showing correct stroke sequence + direction, with romaji/pinyin/meaning, 500+ common characters.
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Log Error Analyzer
Paste logs and group repeated errors, warnings, stack traces, HTTP statuses, endpoint patterns, and time ranges into a local incident report.
Extract & Clean Lists
Extract, validate, normalize, dedupe and convert tokens from text files
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Email Address Extractor
Extract, dedupe, and export email addresses from pasted text or uploaded local files.
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Email Address List Validator
Validate and explain issues in email addresses from pasted text or uploaded local files.
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Email Address Normalizer
Normalize, sort, and prepare email addresses from pasted text or uploaded local files.
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Email Address Deduplicator
Find duplicates and keep one clean copy of email addresses from pasted text or uploaded local files.
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Email Address List Converter
Convert email addresses from pasted text or uploaded local files.
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URL Extractor
Extract, dedupe, and export urls from pasted text or uploaded local files.
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URL List Validator
Validate and explain issues in urls from pasted text or uploaded local files.
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URL Normalizer
Normalize, sort, and prepare urls from pasted text or uploaded local files.
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URL Deduplicator
Find duplicates and keep one clean copy of urls from pasted text or uploaded local files.
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URL List Converter
Convert urls from pasted text or uploaded local files.
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Domain Name Extractor
Extract, dedupe, and export domain names from pasted text or uploaded local files.
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Domain Name List Validator
Validate and explain issues in domain names from pasted text or uploaded local files.
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Domain Name Normalizer
Normalize, sort, and prepare domain names from pasted text or uploaded local files.
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Domain Name Deduplicator
Find duplicates and keep one clean copy of domain names from pasted text or uploaded local files.
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Domain Name List Converter
Convert domain names from pasted text or uploaded local files.
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IPv4 Address Extractor
Extract, dedupe, and export ipv4 addresses from pasted text or uploaded local files.
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IPv4 Address List Validator
Validate and explain issues in ipv4 addresses from pasted text or uploaded local files.
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IPv4 Address Normalizer
Normalize, sort, and prepare ipv4 addresses from pasted text or uploaded local files.
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IPv4 Address Deduplicator
Find duplicates and keep one clean copy of ipv4 addresses from pasted text or uploaded local files.
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IPv4 Address List Converter
Convert ipv4 addresses from pasted text or uploaded local files.
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IPv6 Address Extractor
Extract, dedupe, and export ipv6 addresses from pasted text or uploaded local files.
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IPv6 Address List Validator
Validate and explain issues in ipv6 addresses from pasted text or uploaded local files.
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IPv6 Address Normalizer
Normalize, sort, and prepare ipv6 addresses from pasted text or uploaded local files.
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IPv6 Address Deduplicator
Find duplicates and keep one clean copy of ipv6 addresses from pasted text or uploaded local files.
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IPv6 Address List Converter
Convert ipv6 addresses from pasted text or uploaded local files.
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UUID Extractor
Extract, dedupe, and export uuids from pasted text or uploaded local files.
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UUID List Validator
Validate and explain issues in uuids from pasted text or uploaded local files.
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UUID Normalizer
Normalize, sort, and prepare uuids from pasted text or uploaded local files.
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UUID Deduplicator
Find duplicates and keep one clean copy of uuids from pasted text or uploaded local files.
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UUID List Converter
Convert uuids from pasted text or uploaded local files.
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Hashtag Extractor
Extract, dedupe, and export hashtags from pasted text or uploaded local files.
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Hashtag List Validator
Validate and explain issues in hashtags from pasted text or uploaded local files.
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Hashtag Normalizer
Normalize, sort, and prepare hashtags from pasted text or uploaded local files.
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Hashtag Deduplicator
Find duplicates and keep one clean copy of hashtags from pasted text or uploaded local files.
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Hashtag List Converter
Convert hashtags from pasted text or uploaded local files.
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Social Handle Extractor
Extract, dedupe, and export social handles from pasted text or uploaded local files.
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Social Handle List Validator
Validate and explain issues in social handles from pasted text or uploaded local files.
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Social Handle Normalizer
Normalize, sort, and prepare social handles from pasted text or uploaded local files.
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Social Handle Deduplicator
Find duplicates and keep one clean copy of social handles from pasted text or uploaded local files.
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Social Handle List Converter
Convert social handles from pasted text or uploaded local files.
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Phone Number Extractor
Extract, dedupe, and export phone numbers from pasted text or uploaded local files.
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Phone Number List Validator
Validate and explain issues in phone numbers from pasted text or uploaded local files.
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Phone Number Normalizer
Normalize, sort, and prepare phone numbers from pasted text or uploaded local files.
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Phone Number Deduplicator
Find duplicates and keep one clean copy of phone numbers from pasted text or uploaded local files.
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Phone Number List Converter
Convert phone numbers from pasted text or uploaded local files.
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Postal Code Extractor
Extract, dedupe, and export postal codes from pasted text or uploaded local files.
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Postal Code List Validator
Validate and explain issues in postal codes from pasted text or uploaded local files.
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Postal Code Normalizer
Normalize, sort, and prepare postal codes from pasted text or uploaded local files.
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Postal Code Deduplicator
Find duplicates and keep one clean copy of postal codes from pasted text or uploaded local files.
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Postal Code List Converter
Convert postal codes from pasted text or uploaded local files.
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Credit Card Number Extractor
Extract, dedupe, and export credit card numbers from pasted text or uploaded local files.
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Credit Card Number List Validator
Validate and explain issues in credit card numbers from pasted text or uploaded local files.
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Credit Card Number Normalizer
Normalize, sort, and prepare credit card numbers from pasted text or uploaded local files.
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Credit Card Number Deduplicator
Find duplicates and keep one clean copy of credit card numbers from pasted text or uploaded local files.
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Credit Card Number List Converter
Convert credit card numbers from pasted text or uploaded local files.
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Hex Color Extractor
Extract, dedupe, and export hex colors from pasted text or uploaded local files.
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Hex Color List Validator
Validate and explain issues in hex colors from pasted text or uploaded local files.
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Hex Color Normalizer
Normalize, sort, and prepare hex colors from pasted text or uploaded local files.
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Hex Color Deduplicator
Find duplicates and keep one clean copy of hex colors from pasted text or uploaded local files.
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Hex Color List Converter
Convert hex colors from pasted text or uploaded local files.
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CSS Variable Extractor
Extract, dedupe, and export css variables from pasted text or uploaded local files.
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CSS Variable List Validator
Validate and explain issues in css variables from pasted text or uploaded local files.
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CSS Variable Normalizer
Normalize, sort, and prepare css variables from pasted text or uploaded local files.
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CSS Variable Deduplicator
Find duplicates and keep one clean copy of css variables from pasted text or uploaded local files.
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CSS Variable List Converter
Convert css variables from pasted text or uploaded local files.
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Environment Variable Extractor
Extract, dedupe, and export environment variables from pasted text or uploaded local files.
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Environment Variable List Validator
Validate and explain issues in environment variables from pasted text or uploaded local files.
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Environment Variable Normalizer
Normalize, sort, and prepare environment variables from pasted text or uploaded local files.
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Environment Variable Deduplicator
Find duplicates and keep one clean copy of environment variables from pasted text or uploaded local files.
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Environment Variable List Converter
Convert environment variables from pasted text or uploaded local files.
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HTTP Header Extractor
Extract, dedupe, and export http headers from pasted text or uploaded local files.
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HTTP Header List Validator
Validate and explain issues in http headers from pasted text or uploaded local files.
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HTTP Header Normalizer
Normalize, sort, and prepare http headers from pasted text or uploaded local files.
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HTTP Header Deduplicator
Find duplicates and keep one clean copy of http headers from pasted text or uploaded local files.
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HTTP Header List Converter
Convert http headers from pasted text or uploaded local files.
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JWT Token Extractor
Extract, dedupe, and export jwt tokens from pasted text or uploaded local files.
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JWT Token List Validator
Validate and explain issues in jwt tokens from pasted text or uploaded local files.
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JWT Token Normalizer
Normalize, sort, and prepare jwt tokens from pasted text or uploaded local files.
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JWT Token Deduplicator
Find duplicates and keep one clean copy of jwt tokens from pasted text or uploaded local files.
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JWT Token List Converter
Convert jwt tokens from pasted text or uploaded local files.
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Base64 Block Extractor
Extract, dedupe, and export base64 blocks from pasted text or uploaded local files.
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Base64 Block List Validator
Validate and explain issues in base64 blocks from pasted text or uploaded local files.
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Base64 Block Normalizer
Normalize, sort, and prepare base64 blocks from pasted text or uploaded local files.
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Base64 Block Deduplicator
Find duplicates and keep one clean copy of base64 blocks from pasted text or uploaded local files.
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Base64 Block List Converter
Convert base64 blocks from pasted text or uploaded local files.
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ISO Date Extractor
Extract, dedupe, and export iso dates from pasted text or uploaded local files.
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ISO Date List Validator
Validate and explain issues in iso dates from pasted text or uploaded local files.
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ISO Date Normalizer
Normalize, sort, and prepare iso dates from pasted text or uploaded local files.
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ISO Date Deduplicator
Find duplicates and keep one clean copy of iso dates from pasted text or uploaded local files.
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ISO Date List Converter
Convert iso dates from pasted text or uploaded local files.
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Semantic Version Extractor
Extract, dedupe, and export semantic versions from pasted text or uploaded local files.
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Semantic Version List Validator
Validate and explain issues in semantic versions from pasted text or uploaded local files.
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Semantic Version Normalizer
Normalize, sort, and prepare semantic versions from pasted text or uploaded local files.
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Semantic Version Deduplicator
Find duplicates and keep one clean copy of semantic versions from pasted text or uploaded local files.
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Semantic Version List Converter
Convert semantic versions from pasted text or uploaded local files.
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MAC Address Extractor
Extract, dedupe, and export mac addresses from pasted text or uploaded local files.
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MAC Address List Validator
Validate and explain issues in mac addresses from pasted text or uploaded local files.
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MAC Address Normalizer
Normalize, sort, and prepare mac addresses from pasted text or uploaded local files.
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MAC Address Deduplicator
Find duplicates and keep one clean copy of mac addresses from pasted text or uploaded local files.
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MAC Address List Converter
Convert mac addresses from pasted text or uploaded local files.
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DOI Extractor
Extract, dedupe, and export dois from pasted text or uploaded local files.
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DOI List Validator
Validate and explain issues in dois from pasted text or uploaded local files.
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DOI Normalizer
Normalize, sort, and prepare dois from pasted text or uploaded local files.
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DOI Deduplicator
Find duplicates and keep one clean copy of dois from pasted text or uploaded local files.
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DOI List Converter
Convert dois from pasted text or uploaded local files.
Lifestyle & Fun
Pets, fortunes, recommendations and emoji helpers
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Cat Breed Finder (10-Question Lifestyle Quiz)
Cat breed finder — answer 10 lifestyle questions, get 5 matching cat breeds with personality, grooming needs, friendliness.
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Dog Breed Finder (10-Question Lifestyle Quiz)
Dog breed finder — answer 10 questions about your lifestyle, get 5 matching breeds with size, temperament, exercise needs.
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Dream Interpretation Dictionary (Zhougong + Jung)
Dream dictionary — search dream symbols and meanings (Chinese 周公解梦 + Jungian).
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Palmistry Guide — 6 Major Lines & 7 Mounts with Diagrams
Palmistry guide — 6 major lines + 7 mounts explained with diagrams, traditional readings, bilingual.
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Chinese Acupoint Locator
200+ meridian acupoints / WHO 2008 standard locations / with contraindications, manipulation, and combinations.
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Yoga Pose Library
Yoga pose library — 60+ asanas with Sanskrit + Chinese + English names, benefits, contraindications, modifications.
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Emoji Finder
Unicode 15.1 / 1500+ emojis with bilingual search — one-click copy, browser-only
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Emoji Recommender
Emoji recommender — paste your headline or post, get matching emoji suggestions.
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Fortune Cookie (Daily Bilingual Fortune + Lucky Numbers + Lucky Color)
Daily fortune cookie — bilingual fortunes plus lucky numbers, lucky color, daily affirmation. 365 unique reads.
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MBTI Quick Test (28 Questions, 16 Personality Types)
MBTI quick test — 28 questions, 5 minutes, get your 4-letter type with detailed reading.
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College Major Matcher (Holland RIASEC, 40 Questions)
College major matcher — Holland code (RIASEC) test, 40 questions, recommend 10+ matching majors with career path.
Dev Cheatsheets
Command and syntax references for developers
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awk + sed Cheatsheet
awk + sed cheat sheet — 80+ one-liners for text processing, with real examples and common pitfalls.
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AWS CLI Cheatsheet
AWS CLI cheat sheet — 80+ commands for EC2 / S3 / IAM / Lambda / RDS / EKS / CloudFormation with real examples.
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Bash Cheatsheet
Bash cheat sheet — 100+ commands & idioms for variables, conditionals, loops, functions, pipes, traps, with real one-liners.
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curl Cheatsheet
curl cheat sheet — 80+ curl commands for GET/POST/auth/upload/download/SSL/proxy, with real examples and pitfalls.
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DNS Record Explainer
DNS record explainer — all 18 common record types (A, AAAA, CNAME, MX, TXT, SRV, etc.) with syntax, examples, and gotchas.
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Docker Cheatsheet
Docker command cheat sheet — 80+ commands with real examples, common mistakes, and Compose section.
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Elasticsearch Cheatsheet
Elasticsearch cheat sheet — 80+ Query DSL, mapping, analyzer, aggregation, replication, with real examples.
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Git Cheatsheet
Git command cheat sheet — searchable, with explanations, common mistakes, and real examples.
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Go (Golang) Cheatsheet
Go (Golang) cheat sheet — 100+ idiomatic snippets covering syntax, goroutines, channels, generics, errors, stdlib.
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HTTP Status Code Explorer
HTTP status code explorer — all 70+ codes with meaning, common causes, real examples, and what to check.
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kubectl Cheatsheet
kubectl cheat sheet — 100+ Kubernetes commands with real examples, common pitfalls, and YAML snippets.
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Markdown Cheat Sheet
Markdown syntax cheat sheet — every rule with live preview side by side, GFM + flavors.
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MongoDB Cheatsheet
MongoDB cheat sheet — 80+ shell commands & query operators for CRUD, aggregation, indexing, replication.
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Next.js Cheatsheet
Next.js 15 cheat sheet — App Router, Server Components, Server Actions, dynamic routes, with examples and pitfalls.
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Nginx Cheatsheet
Nginx cheat sheet — common configs, location/server blocks, SSL, reverse proxy, gzip, real examples & gotchas.
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npm / yarn / pnpm Cheatsheet
npm / yarn / pnpm cheat sheet — 80+ commands across init, install, scripts, publish, with cross-tool comparison.
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Password Leak Checker
Password leak checker — check if your password has been seen in known breaches using k-anonymity (HIBP API style), the password never leaves your browser.
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PostgreSQL Cheatsheet
PostgreSQL cheat sheet — 80+ commands & functions for psql, JSONB, CTEs, window functions, indexing, partitioning, advanced extensions.
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Python Cheatsheet
Python cheat sheet — 100+ idiomatic Python snippets for string, list, dict, file, async, with real examples.
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React Hooks Cheatsheet
React hooks cheat sheet — all 17 built-in hooks (useState / useEffect / useMemo / useTransition / useFormStatus...) with real examples and pitfalls.
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Redis Cheatsheet
Redis cheat sheet — 80+ commands across strings, hashes, lists, sets, sorted sets, pub/sub, streams, scripts, with examples and pitfalls.
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Regex Cheatsheet
Interactive regex cheat sheet — quick reference for every flavor (JS, Python, PCRE).
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Rust Cheatsheet
Rust cheat sheet — 100+ snippets covering ownership, borrowing, lifetimes, traits, async, error handling.
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SQL Cheatsheet
SQL cheat sheet — 100+ statements covering SELECT, JOIN, window functions, indexing, MySQL/PostgreSQL/SQLite differences.
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Svelte Cheatsheet
Svelte 5 cheat sheet — runes ($state, $derived, $effect), snippets, props, stores, with Svelte 4 comparison.
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Tailwind CSS Cheatsheet
Tailwind CSS cheat sheet — 100+ utility classes (spacing, color, flex, grid, typography, responsive) with live preview.
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TypeScript Cheatsheet
TypeScript cheat sheet — 100+ snippets for types, generics, utility types, narrowing, async patterns.
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Vim Cheatsheet
Vim cheat sheet — 100+ commands covering modes, motions, edits, search, registers, splits, with mnemonics.
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Vue 3 Cheatsheet
Vue 3 cheat sheet — Composition API, reactivity, components, directives, Pinia, with side-by-side Options API comparison.
More tools
44 tools-
Add Line Numbers
Number every line of pasted text — set start, step and separator, zero-pad to align, skip blanks, or strip numbers back off — browser-only
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ASCII Table Generator
Paste CSV or TSV, get a monospace table that lines up: +--+ ASCII, Unicode box, Markdown, with real CJK width
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ASCII Table Reference
Complete 0–127 ASCII table: decimal, hex, octal, binary, character, name, HTML entity and escape — control codes explained, click to copy, fully searchable.
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Bionic Reading Converter
Bold the leading letters of every word — live preview, adjustable strength, export HTML — 100% in-browser
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Character Frequency Counter
Count how often every character appears, ranked by frequency, with case, space and punctuation toggles, browser-only
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Chemistry Equation Balancer
Chemistry equation balancer — paste an unbalanced equation, solve coefficients using the matrix method, show step-by-step.
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China Gaokao Major Recommender (2026, 3+1+2 New Gaokao)
China gaokao major recommender 2026 — filter by score range + subject combo (3+1+2) + interest + employment outlook, 150+ undergrad majors across 12 disciplines.
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Chinese Lunar Almanac (Huangli)
Chinese lunar almanac (huangli) — daily 宜/忌 advice, 24 solar terms, 干支/生肖, auspicious hours, any date 1900-2100.
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Column Align
Pad delimited rows into an even monospace grid, like column -t, with correct CJK width — browser-only
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Emoji Remover
Strip every emoji from text, family and skin-tone combos removed whole, your words and punctuation left untouched, browser-only
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Fancy Text Generator
Turn plain text into 25 Unicode styles — bold, italic, script, fraktur, double-struck, circled, squared, fullwidth, upside-down, small caps, strikethrough — copy & paste anywhere, browser-only
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Filename Sanitizer
Strip illegal characters and make any string a safe cross-platform filename, in your browser
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Find and Replace Text
Batch find-and-replace on big text — regex, $1 capture groups, whole-word, case toggle, multiple chained rules — runs entirely in your browser
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Leetspeak Converter
Turn plain text into 1337 and back, three strength levels, all in your browser
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List Comparison
Compare two lists line by line: only in A, only in B, in both, and merged — all in your browser
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List Randomizer
Shuffle a list, pick N at random, split into K teams, or draw one winner — fair crypto randomness, browser-only
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List to Comma Separated
Turn a column of lines into a comma-separated string — add quotes, prefix/suffix, dedupe, sort, or split it back — browser-only
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Markdown to Plain Text
Strip Markdown to clean plain text — headings, bold, links, code, lists, tables, HTML all flattened — browser-only
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Math Formula Reference
Math formula reference — algebra, geometry, trigonometry, calculus, statistics, all in one place.
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NATO Phonetic Alphabet Converter
Text to Alpha Bravo Charlie and back — spell anything aloud over the phone or radio, no mishearing.
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Number Formatter
One number in, every format out: thousands grouping, currency, percent, scientific, engineering, compact (K/M/万), ordinal, byte size — plus reverse parsing. 100% browser-only.
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Number to Words
Spell any number in English — cheque amounts, ordinals, British vs American "and" — 100% browser-only
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Palindrome Checker
Tells you if text reads the same backwards, finds the longest palindrome inside, handles Chinese and emoji, runs in your browser
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Pig Latin Translator
English to Pig Latin and back, in your browser. pig becomes igpay, egg becomes eggway, with case and punctuation kept.
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Random Line Picker
Paste a list, pick N lines at random with crypto-grade fairness, draw raffle winners, copy in one click, all in your browser
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Readability Score Checker
Paste English text and get Flesch Reading Ease plus five grade-level scores, syllable counts, and reading time — runs entirely in your browser
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Reading Time Calculator
Paste text, get an accurate "X min read" plus a separate speaking time — counts CJK by character and English by word, all in your browser
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Remove Line Breaks
Strip or replace line breaks, join wrapped lines into running text — keep-paragraphs mode, CRLF/CR/LF normalize, live preview — browser-only
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Reverse Text Generator
Reverse text by character, word or line, flip each word, or turn writing upside down — Unicode and emoji safe, runs in your browser
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Robots.txt Auditor
Check robots.txt for user-agent groups, allow and disallow rules, sitemap declarations, crawl-delay, and unsupported directives.
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Roman Numeral Converter
Arabic ⇄ Roman, both directions, live — strict validation, step-by-step breakdown, vinculum up to 3,999,999 — 100% browser-only
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Social Media Character Counter
Count characters against real X, Instagram, Weibo, LinkedIn, TikTok and SMS limits as you type, all in your browser
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String Similarity Checker
Levenshtein edit distance, Dice, Jaro-Winkler and LCS side by side, with a 0-100% match score, all in your browser
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Strip HTML Tags
Paste HTML source, get clean plain text. Block tags become line breaks, entities decode, allow-list keeps chosen tags, script content gets removed — all in your browser.
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Syllable Counter
Count syllables in any English word or text, with a 5-7-5 haiku mode for poems
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Tabs to Spaces Converter
Convert tabs to spaces and spaces to tabs, real tab-stop alignment, leading-indent or whole-line, all in your browser
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Text to Speech
Read any text aloud with your browser's built-in voices — pick voice, speed, pitch, volume — 100% local, nothing uploaded
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Text Wrap
Hard-wrap text at any column width, by word or by character, with optional line prefix, all in your browser
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Unicode Character Inspector
Inspect any text character-by-character: code points, UTF-8/UTF-16 bytes, HTML entities, JS escapes, names, and hidden zero-width / confusable glyphs.
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Unicode Normalizer
Normalize text to NFC, NFD, NFKC or NFKD, see code-point and byte counts shift, spot which characters changed, copy in one click, all in your browser
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Unslugify
Turn my-blog-post, user_first_name and parseHTMLContent back into readable text, browser-only
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UTF-8 Byte Counter
Count UTF-8 bytes, UTF-16 code units, Unicode code points and characters in any string, right in your browser
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Word Frequency Counter
Rank every word + phrase by frequency, with keyword density, stop-word filtering, and n-gram analysis — browser-only
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Zero Width Character Detector
Find and strip zero-width spaces, the BOM, no-break spaces and other invisible characters, then copy clean text — runs in your browser