Developer & DevOps for Content Creator

40 developer & devops tools hand-picked for Content Creator.

Base64 to File Converter

Paste raw Base64 or a data URL, decode it locally, inspect bytes, and download the reconstructed file.
Batch File Rename Planner

Upload a batch, generate safe new filenames with sequence numbers and case rules, then export a CSV plan.
Case Converter

Convert text between camelCase, snake_case, kebab-case, PascalCase, Title Case, UPPER, lower — instant, browser-only
Chinese Idiom Search

800+ everyday chengyu — pinyin, origin, usage.
Code Screenshot Generator

Code screenshot generator (Carbon-like) — syntax highlight, beautiful gradient backgrounds, window chrome, export PNG/SVG for X / blog covers.
Color Blindness Simulator

Color blindness simulator — paste hex or upload image, see how it looks to people with protanopia / deuteranopia / tritanopia / monochromacy.
Color Contrast Checker

Color contrast checker — WCAG 2.2 AA/AAA compliance for normal/large text, real-time grade.
Duplicate File Finder

Upload a batch and find exact duplicate files by SHA hash locally, with a Markdown cleanup report.
File to Base64 Converter

Upload a small file and convert it to raw Base64 or a data URL locally for embeds, fixtures, and tests.
GitHub README Badge Generator

GitHub README badge generator — shields.io-style badges, 50+ presets (build/version/license/coverage/etc), custom labels, copy as Markdown/HTML/AsciiDoc/RST.
HTML Color Names

HTML named colors — all 147 CSS color names with hex/RGB/HSL, searchable + sortable.
HTML Entities Encoder

Encode/decode HTML entities — & < > " ' and all numeric refs — browser-only
HTML Link Extractor

Upload HTML and extract anchors, images, scripts, stylesheets, canonicals, and meta URLs into CSV locally.
HTML Table to CSV Converter

HTML table to CSV converter — paste HTML or full page source, extract all tables, get CSV/TSV/JSON/Excel-ready output with header detection + colspan/rowspan handling.
HTML Table to Markdown

Paste an HTML table, get a clean GitHub-flavoured Markdown table with the |---| separator row, tags stripped, entities decoded and pipes escaped, all in your browser
HTML to Markdown

HTML to Markdown — paste rich content, get clean .md with links, code, tables, lists preserved.
Image Compressor (Local)

Image compressor — squeeze JPG/PNG/WebP without server upload, with quality slider, batch mode, file size comparison.
JSON Formatter & Validator

Format, validate, and minify JSON instantly — right in your browser.
JSON Minifier

Minify JSON into a compact single line, optionally sort object keys, and keep everything local.
JSON to Markdown Table

Paste a JSON array of objects, get a clean GitHub-flavored Markdown table. Key union, pipe escaping, alignment, all in your browser.
Local File Workbench

Triage a mixed batch locally for file type mismatches, duplicate candidates, metadata privacy, archive risks, and next-step tools.
Markdown Cheat Sheet

Markdown syntax cheat sheet — every rule with live preview side by side, GFM + flavors.
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.
Markdown Link Extractor

Upload Markdown and extract inline links, reference links, images, and bare URLs into a local CSV.
Markdown Table Generator

Build Markdown tables visually — add/remove rows, column alignment, paste from Excel / CSV — browser-only
Markdown to HTML

Convert Markdown to clean HTML — headings, lists, code, links, images, tables — instant live preview, browser-only
Meta Tag Generator

Generate SEO meta tags — title, description, Open Graph, Twitter Card, Schema.org.
QR Code Decoder

QR code decoder — drag a QR image or paste URL, see the text/URL inside, plus phishing & risky-link warnings.
Regex Builder from Examples

Regex from examples — paste positive matches + negative non-matches, get a regex that hits all positives and rejects all negatives, with multiple candidate patterns ranked by specificity.
Regex Tester

Test JavaScript regex live — match highlighting, group capture, replace preview, flag toggles — browser-only
robots.txt Generator

Generate robots.txt with templates for common crawlers (Google, Bing, AI scrapers).
Sitemap URL Auditor

Paste sitemap XML and audit URL count, HTTP links, duplicates, trailing-slash conflicts, query parameters, lastmod freshness, and extensions.
URL Slug Generator

Turn any title into a clean URL slug — lowercase, dashes, ASCII-safe transliteration, multiline batch — browser-only
Text Diff

Compare two blocks of text — line-by-line additions, deletions, equal — colour highlighted, browser-only
URL Deduplicator

Find duplicates and keep one clean copy of urls from pasted text or uploaded local files.
URL Extractor

Extract, dedupe, and export urls from pasted text or uploaded local files.
URL List Converter

Convert urls from pasted text or uploaded local files.
URL List Validator

Validate and explain issues in urls from pasted text or uploaded local files.
URL Normalizer

Normalize, sort, and prepare urls from pasted text or uploaded local files.
UTM Link Builder

UTM link builder — track campaign source, medium, name. GA4/Google Analytics compatible.