Format Converter

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

Pretty-print, minify, and validate XML in your browser — preserves CDATA, comments, and namespaces.

Format and beautify YAML — re-indent, validate, minify, sort keys.

Format and validate INI / TOML-like config — sort sections, align equal signs.

Format and beautify SQL — supports MySQL, PostgreSQL, BigQuery, SQLite and 17 more dialects.

Format and beautify CSS — sort properties, indent rules, expand or minify.

Convert CSV to JSON or JSON to CSV — handles quoted commas, newlines in cells, custom delimiter — browser-only

Convert uploaded or pasted CSV into clean Markdown tables with quoted-cell support, locally in the browser.

Convert CSV files to tab-separated values while preserving quoted commas, quotes, and multiline cells locally.

Turn tab-separated files into standards-friendly CSV with proper quoting, download, and local processing.

Remove duplicate CSV rows by full row or selected key columns from uploaded files, locally and safely.

Upload or paste CSV, keep only selected columns by name or index, and export a smaller privacy-safe file.

Sort uploaded CSV rows by a selected column with numeric-aware ordering and local-only processing.

Filter uploaded CSV rows by column value using contains, equals, or regex, with local browser processing.

Flip CSV rows and columns from uploaded files or pasted data, with ragged-row handling and local output.

Standardize CSV header rows to snake_case, kebab-case, camelCase, or Title Case before imports and scripts.

Upload CSV and get a quick Markdown profile of filled, missing, unique, numeric, min, max, and average values.

Upload CSV or TSV and profile missing values, inferred types, invalid cells, duplicate rows, whitespace issues, top values, and numeric outliers.

Upload files and inspect filename, size, browser MIME type, extension, and magic-byte signature locally.

XML to JSON converter — preserves attributes, nested elements, CDATA. Reversible.

Convert between YAML and JSON — both directions, pretty-printed, error messages with line numbers — browser-only

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

Validate JSONL line by line, pretty-print it, convert to a JSON array, or export a CSV-like table locally.

JSON to TypeScript interface — paste JSON, get clean interfaces with union types from arrays, optional vs required detection, root name customizable.

Paste JSON or NDJSON samples and infer a Draft 2020-12 style schema with types, required fields, formats, enums, and examples.

JSONPath / JMESPath query tester — paste JSON, write a path, see matched values + matched paths highlighted live.

GraphQL formatter + minifier — beautify query/mutation/subscription/schema, validate syntax, copy minified single-line for HTTP body.

Audit OpenAPI JSON or YAML for endpoint coverage, missing operation IDs, security gaps, and weak response documentation.

Inspect package-lock.json, pnpm-lock.yaml, or yarn.lock for duplicate versions, risky sources, prereleases, and missing integrity.

TOML formatter + converter — format/validate TOML 1.0, convert TOML ↔ JSON ↔ YAML, with error line/column.

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.

TypeScript to Zod schema converter — paste interface/type, get z.object() schema, supports unions/optionals/nested/generics/enum/Record/Map/Set.

Extract, deduplicate, inspect, copy, and export query parameters from one URL or many URLs locally.

Chinese characters to pinyin — with tone marks or numbers, supports simplified and traditional.

Traditional ⇄ Simplified Chinese — fast, character-level, no API.

Gregorian ⇄ Chinese Lunar (Nongli) calendar — bi-directional, accurate 1900-2100.

Arabic ⇄ Chinese number — simple (一二三), formal (壹貳參), or amount (金额大写 with 元角分).

Chinese zodiac checker — your animal sign, element, compatibility, lucky numbers/colors by birth year.

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

HTML to Markdown — paste rich content, get clean .md with links, code, tables, lists preserved.

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

Markdown TOC generator — paste your markdown, get a clean table of contents with anchor links.

Minify HTML — strip comments, whitespace, optional attributes, inline CSS/JS. 40-60% smaller.

Minify CSS — strip comments, whitespace, shorten colors, merge selectors. 30-60% smaller.

Minify JavaScript — strip comments, whitespace, optional name shortening. 40-70% smaller.

Lightly obfuscate JavaScript in the browser: strip comments, remove debugger/console calls, and optionally wrap strings with base64.

Upload or paste HTML and extract forms, methods, actions, fields, labels, required flags, autocomplete, password fields, and security risks.

Check robots.txt for user-agent groups, allow and disallow rules, sitemap declarations, crawl-delay, and unsupported directives.

Upload or paste text and convert CRLF, CR, and LF endings to a consistent LF or CRLF output locally.

Upload a text file and remove BOM, null bytes, trailing spaces, and excessive final blank lines locally.

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

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

Text to Morse code and back — encode, decode, audio playback, ITU standard.

Encode and decode URL-unsafe characters — query strings, path segments, full URLs — instant, browser-only

Encode or decode Base64 — text, files, and Data URLs. Runs entirely in your browser.

Base32 + Base58 encoder/decoder — RFC 4648 base32 (Crockford variant too), Bitcoin base58, Solana base58, hex/text/file input.

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

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

Cron expression explainer — paste any cron, get plain English/Chinese + next 20 runs + visual time grid.

Visual crontab builder + human-readable explanation + next run preview.

Plan meetings across timezones — see when everyone's working hours overlap.

Drop a folder of QR images and get every decoded URL in one table — fast batch audit for packaging, posters, and print runs.

Paste forum BBCode, get safe HTML — live preview, escaped output, one-click copy, all in your browser

Cups, spoons, grams, millilitres — and the part that matters, volume ↔ weight by ingredient density, all in your browser

Paste CSS declarations, get a React inline style object — kebab keys camelCased, vendor prefixes handled, optional bare numbers, browser-only

Paste CSV, get a clean HTML table, with header toggle, optional class and inline borders, all in your browser

Turn CSV into CREATE TABLE + INSERT statements — type inference, safe value escaping, MySQL / PostgreSQL / SQLite — browser-only

Turn a CSV table into clean, indented XML — name the root and row elements, columns as elements or attributes, escaped output. Browser-only.

Turn a spreadsheet export into a clean YAML array of objects — RFC 4180 quoting, optional type inference, browser-only

Convert bytes, KB, MB, GB, TB and bits — decimal (1000) and binary (1024, KiB/MiB/GiB) side by side, with the hard-drive 931 GiB gotcha explained — browser-only

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

Extract, dedupe, and export dois from pasted text or uploaded local files.

Convert dois from pasted text or uploaded local files.

Validate and explain issues in dois from pasted text or uploaded local files.

Normalize, sort, and prepare dois from pasted text or uploaded local files.

Find duplicates and keep one clean copy of domain names from pasted text or uploaded local files.

Extract, dedupe, and export domain names from pasted text or uploaded local files.

Convert domain names from pasted text or uploaded local files.

Validate and explain issues in domain names from pasted text or uploaded local files.

Normalize, sort, and prepare domain names from pasted text or uploaded local files.

Find duplicates and keep one clean copy of email addresses from pasted text or uploaded local files.

Extract, dedupe, and export email addresses from pasted text or uploaded local files.

Convert email addresses from pasted text or uploaded local files.

Validate and explain issues in email addresses from pasted text or uploaded local files.

Normalize, sort, and prepare email addresses from pasted text or uploaded local files.

Convert .env environment variables to JSON and back, with quote escaping, export prefix, and optional type inference, all in your browser

Find duplicates and keep one clean copy of environment variables from pasted text or uploaded local files.

Extract, dedupe, and export environment variables from pasted text or uploaded local files.

Convert environment variables from pasted text or uploaded local files.

Validate and explain issues in environment variables from pasted text or uploaded local files.

Normalize, sort, and prepare environment variables from pasted text or uploaded local files.

Decimal, binary and Gray code three ways, gray = n^(n>>1), one click each side, all in your browser

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

Extract, dedupe, and export hashtags from pasted text or uploaded local files.

Convert hashtags from pasted text or uploaded local files.

Validate and explain issues in hashtags from pasted text or uploaded local files.

Normalize, sort, and prepare hashtags from pasted text or uploaded local files.

Find duplicates and keep one clean copy of hex colors from pasted text or uploaded local files.

Extract, dedupe, and export hex colors from pasted text or uploaded local files.

Convert hex colors from pasted text or uploaded local files.

Validate and explain issues in hex colors from pasted text or uploaded local files.

Normalize, sort, and prepare hex colors from pasted text or uploaded local files.

Paste an HTML <table>, get clean JSON, array of objects or 2D array, type inference, browser-only

Paste HTML, get React-ready JSX — class becomes className, inline styles become objects, tags self-close. Browser-only.

Find duplicates and keep one clean copy of http headers from pasted text or uploaded local files.

Extract, dedupe, and export http headers from pasted text or uploaded local files.

Convert http headers from pasted text or uploaded local files.

Validate and explain issues in http headers from pasted text or uploaded local files.

Normalize, sort, and prepare http headers from pasted text or uploaded local files.

Compress one image to a target KB size locally with quality search, automatic downscaling, preview, and download.

Turn INI / .cfg / .conf into JSON and back, with section nesting, comment stripping and optional type inference, all in your browser

IPv4 dotted-quad to 32-bit integer, binary and hex, both directions, browser-only

Find duplicates and keep one clean copy of ipv4 addresses from pasted text or uploaded local files.

Extract, dedupe, and export ipv4 addresses from pasted text or uploaded local files.

Convert ipv4 addresses from pasted text or uploaded local files.

Validate and explain issues in ipv4 addresses from pasted text or uploaded local files.

Normalize, sort, and prepare ipv4 addresses from pasted text or uploaded local files.

Find duplicates and keep one clean copy of ipv6 addresses from pasted text or uploaded local files.

Extract, dedupe, and export ipv6 addresses from pasted text or uploaded local files.

Convert ipv6 addresses from pasted text or uploaded local files.

Validate and explain issues in ipv6 addresses from pasted text or uploaded local files.

Normalize, sort, and prepare ipv6 addresses from pasted text or uploaded local files.

Find duplicates and keep one clean copy of iso dates from pasted text or uploaded local files.

Extract, dedupe, and export iso dates from pasted text or uploaded local files.

Convert iso dates from pasted text or uploaded local files.

Validate and explain issues in iso dates from pasted text or uploaded local files.

Normalize, sort, and prepare iso dates from pasted text or uploaded local files.

Paste a JS object literal or JSON5, get strict JSON: quote bare keys, swap single quotes, strip comments and trailing commas, runs in your browser

Structural JSON compare — added / removed / changed keys by path, three-colour tree, browser-only

JSON to C# class or record — paste JSON, get PascalCase properties with System.Text.Json or Newtonsoft attributes, nested classes, nullable T?, init setters, DateTime detection.

Turn a JSON array (or object) into clean CSV — flattens nested keys, escapes per RFC 4180, custom delimiter, UTF-8 BOM for Excel — browser-only

JSON to Dart / Flutter class — paste JSON, get final fields, camelCase names, factory fromJson, toJson, null-safe T?, nested classes, and optional @JsonSerializable codegen.

JSON to Go struct — paste JSON, get typed structs with json tags, exported fields, nested sub-structs, pointers for nullable, int64 and omitempty options.

JSON to Java POJO, record, or Lombok @Data — paste JSON, get camelCase fields with getters/setters, Jackson @JsonProperty or Gson @SerializedName, nested classes, primitive vs boxed inference.

JSON to Kotlin data class — paste JSON, get val properties, camelCase fields, nullable T?, nested classes, and kotlinx.serialization @SerialName, Gson @SerializedName, or Moshi @Json annotations.

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

JSON to PHP array — paste JSON, get a clean associative or indexed array with short [] or array() syntax, 2/4 indent, trailing comma, and an optional <?php return …; wrapper.

JSON to Protobuf — paste JSON, get proto3 message definitions with inferred scalar types, incrementing field numbers, snake_case fields, repeated arrays, and named nested messages.

JSON to Python — paste JSON, get @dataclass or Pydantic v2 models with type hints, Optional inference, nested classes, snake_case fields and aliases.

Turn a JSON object into a URL query string — repeat, key[], or comma arrays, bracket-nested objects, sorted, skip-empty — and back to JSON, 100% in your browser

JSON to Rust struct — paste JSON, get serde-derived structs with snake_case fields, serde rename, Option for nullable, Vec for arrays, nested sub-structs.

Paste JSON, get Scala case classes. Nested objects become child classes, arrays become List, null becomes Option, all in your browser.

Turn a JSON array into ready-to-run INSERT statements, MySQL / PostgreSQL / SQLite dialects, browser-only

JSON to Swift Codable — paste JSON, get struct or class types conforming to Codable, camelCase properties, a CodingKeys enum for non-matching keys, Optional T? for nullable fields, and nested types.

Turn a JSON array into tab-separated values you can paste straight into Excel or Google Sheets, with header toggle and safe escaping, all in your browser

Convert JSON to clean, indented XML — @attr/#text conventions, custom root, escaped output. Browser-only.

Convert JSON to clean YAML — block scalars for multiline strings, optional key sorting, 2/4-space indent, line-numbered errors — browser-only

Turn a column of lines into a JSON array, with type inference, dedupe and pretty print, and split it back to lines, all in your browser

Paste a Markdown pipe table, get RFC 4180 CSV: escaped pipes, quoted commas, comma / semicolon / tab delimiters, all in your browser

Turn Markdown into React-ready JSX — one paste from README to a real component, with class becoming className and code blocks intact. Browser-only.

Spell any number in English — cheque amounts, ordinals, British vs American "and" — 100% browser-only

Convert °F, °C and gas mark instantly — plus the fan-oven setting and the recipe heat band, all in your browser

Find duplicates and keep one clean copy of phone numbers from pasted text or uploaded local files.

Extract, dedupe, and export phone numbers from pasted text or uploaded local files.

Convert phone numbers from pasted text or uploaded local files.

Validate and explain issues in phone numbers from pasted text or uploaded local files.

Normalize, sort, and prepare phone numbers from pasted text or uploaded local files.

Find duplicates and keep one clean copy of postal codes from pasted text or uploaded local files.

Extract, dedupe, and export postal codes from pasted text or uploaded local files.

Convert postal codes from pasted text or uploaded local files.

Validate and explain issues in postal codes from pasted text or uploaded local files.

Normalize, sort, and prepare postal codes from pasted text or uploaded local files.

Java/Spring .properties to JSON and back, with dotted-key nesting, line continuations and full escape handling, all in your browser

Parse a URL query string into JSON and rebuild a query string from JSON — two-way, live, with array + nested object conventions — 100% in your browser

Find duplicates and keep one clean copy of semantic versions from pasted text or uploaded local files.

Extract, dedupe, and export semantic versions from pasted text or uploaded local files.

Convert semantic versions from pasted text or uploaded local files.

Validate and explain issues in semantic versions from pasted text or uploaded local files.

Normalize, sort, and prepare semantic versions from pasted text or uploaded local files.

Find duplicates and keep one clean copy of social handles from pasted text or uploaded local files.

Extract, dedupe, and export social handles from pasted text or uploaded local files.

Convert social handles from pasted text or uploaded local files.

Validate and explain issues in social handles from pasted text or uploaded local files.

Normalize, sort, and prepare social handles from pasted text or uploaded local files.

Strip comments and whitespace from SQL — collapse to one compact line, string literals stay untouched, runs entirely in your browser.

Paste SVG, get a React component — attributes camelCase, style becomes an object, wrap with {...props} passthrough. Browser-only.

Rasterize SVG to PNG in your browser — custom size, 1×/2×/3× HiDPI scale, true transparent background, never uploaded.

One temperature in, all four scales out — Celsius, Fahrenheit, Kelvin, Rankine — live formula, reference points, browser-only

Tab-separated data to JSON, header detection, type inference, quoted tab/newline fields, browser-only

Signed decimal to two's complement binary and hex at 4, 8, 16, 32, 64 bits, with sign-magnitude and one's-complement steps, runs in your browser

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

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

Convert urls from pasted text or uploaded local files.

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

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

Type a number in English or Chinese words, get the digits back — one hundred twenty-three → 123, 一万两千三百 → 12300 — browser-only

Turn repeating XML records into a CSV table, columns are the union of every field, attributes optional, custom delimiter, RFC 4180 escaping, browser-only

Paste XML, get clean YAML. Attributes as @ keys, repeated tags as lists, mixed text kept, valid YAML 1.2. Browser only.

Turn a YAML list of objects into an RFC 4180 CSV — column union, JSON or flattened nested values, comma / semicolon / tab, browser-only