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.

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

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

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

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

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

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

Paste a JSON document, get a typed mongoose.Schema with the model export, nested sub-schemas, date detection, browser-only

JSON array to NDJSON and back, one compact JSON value per line, with bad-line numbers and pick-your-indent, all in your browser

Paste JSON, get Pydantic BaseModel classes with type hints, nested sub-models, List[T], Optional inference, v1 / v2 and aliases.

Paste JSON, get a Ruby Hash literal or Struct.new classes; symbol or string keys, null maps to nil, nested objects, zero upload.

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

Paste JSON, get clean TOML with proper tables and arrays of tables, all in your browser

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 newline-delimited JSON into a JSON array and back, with bad-line numbers and pick-your-indent — 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

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

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

Turn YAML into clean, indented XML. Keys become elements, lists repeat, @keys become attributes, every value escaped. Browser-only.

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.

Cardinal to ordinal both ways: 1st 2nd 3rd suffixes, twenty-first words, plus Chinese 第N, single or batch, copy ready

Number to tally marks and back, in Unicode, the five-bar gate, or Chinese 正, with one-click copy, all in your browser

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

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.

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

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

Paste CSV, get a compile-ready LaTeX tabular with booktabs, l/c/r alignment, a table environment and safe escaping, all in your browser

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

Paste a JSON array of objects, get a clean GitHub-flavored Markdown table. Key union, pipe escaping, alignment, 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 GitHub Markdown into clean AsciiDoc, headings, source blocks, url[text] links and image:: macros, all in your browser

Paste Markdown, get forum BBCode in real time. Bold, links, lists, code blocks and quotes mapped to [b] [url=] [list] [code] [quote], browser only

Paste Markdown, get Confluence wiki markup — h1. headings, {code} panels, ||tables|| and {quote} blocks, all in your browser

Paste GitHub-flavored Markdown, get Jira wiki markup back — headings, bold, code blocks, tables, links, all in your browser

Convert Markdown to Emacs Org-mode with star headlines, /italic/ slashes, ~code~ verbatim and [[url][text]] links, all in the browser

Convert Markdown to RST for Sphinx and Python docs, with matched heading underlines, double-backtick code and `text <url>`_ links, in the browser

Paste standard Markdown, get Slack mrkdwn back: single-star bold, underscore italic, single-tilde strike, angle-bracket links, all in your browser

Paste GitHub-flavored Markdown, get Textile markup back for Redmine and wikis, with headings, bold, code blocks, links and images converted in your browser

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.

Degrees, radians, gradians, turns, arcminutes, arcseconds and NATO mils, all from one input, copyable, browser-only

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

Convert GPS coordinates between DMS, decimal degrees and decimal minutes, paste straight into Google Maps, all in your browser

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

bps / Kbps / Mbps / Gbps ⇄ B/s, KB/s, MB/s — bit-rate vs byte-rate, 8x apart — browser-only

Turn 0.75 into 3/4, type 0.(3) to get 1/3, or flip a fraction back to its decimal with the repeating block marked

Transcribe DNA to mRNA, build the reverse complement, translate codons to protein — standard genetic code, browser-only

Convert between fractional inch, decimal inch, mm, number (#1-#80) and letter (A-Z) drill sizes — closest match, full chart, one-click copy — 100% in your browser

Plain number ⇄ engineering notation (×10³ⁿ) ⇄ SI prefix (47kΩ) — exponent always a multiple of 3, with scientific notation for contrast — browser-only

Turn column letters into numbers and back: A is 1, Z is 26, AA is 27, batch convert, paste A1 refs, copy in one click, all in your browser

MPG ⇄ L/100km ⇄ km/L ⇄ mi/L ⇄ Imperial MPG — type one, read every unit, copy each — browser-only

Measure your palm once, read your glove number, letter (S/M/L/XL) and EU size — cm ⇄ inch, reverse lookup, browser-only

Head circumference to US / UK / EU / S-M-L hat size, with a full chart and one-click copy, all in your browser

Gregorian date ⇄ Julian Day Number (JDN), fractional JD, Modified Julian Date (MJD) and ordinal day-of-year — astronomy-grade, browser-only

Type one distance, read it as light-years, parsecs, AU, light-seconds, km and miles at once, all in your browser

MIDI number ⇄ note name ⇄ frequency — note 60 is middle C, A4 = 440 Hz, cents off, C3/C4 toggle — 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

A4, Letter, A3, B5 and every ISO and US sheet in mm, cm, inches and pixels at 72/150/300 DPI, browser-only

GSM ⇄ US basis weight (lb) by paper grade, plus single-sheet weight from sheet size — browser-only

Percent ⇄ fraction, both ways. 25% becomes 1/4, 3/4 becomes 75%, decimal percents and values over 100% included, fully reduced, browser-only.

Convert (x, y) to (r, θ) and back, degrees or radians, with a live coordinate diagram, browser-only

Turn any date into Roman numerals for tattoos, wedding bands, copyright years and cornerstones, then read them back the other way, all in your browser

US gauge #0-#14 and metric M2-M12 — major diameter in inch + mm, pilot and clearance hole sizes, one-click copy — browser-only

Gauge ⇄ thickness for steel, galvanized, stainless and aluminum — mm and inch, both directions, copy and share — browser-only

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

Convert any color between HEX, RGB, HSL, OKLCH, CSS variable, and Tailwind — with live preview.

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

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.

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.

Milliseconds or seconds into 2d 3h 5m 10s, 2 days 3 hours, and 3 hours ago, bilingual, copy in one click, browser-only

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.

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.

Latitude/longitude ⇄ geohash, base32, precision 1-12, bounding box and 8 neighbors, all in your browser

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 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.

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.

Convert ISBN-10 ⇄ ISBN-13 with the check digit recomputed — 978 prefix, mod-10 and mod-11, hyphen-aware, browser-only

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.

Escape and unescape strings for JSON, regex literals, and template literals — browser-only, instant output

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.

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.

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.

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

OKLCH ⇄ HEX, RGB and HSL with a full sRGB → OKLab → OKLCH pipeline, live swatch and sRGB gamut warning — browser-only

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.

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

RGB and HEX to CMYK for print, plus CMYK back to RGB, with a live swatch and one-click copy, all in the 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 once — see escaped strings for JSON, Python, Go, C#, Rust, Java, C, Ruby, PHP, Swift, Kotlin & JS side by side

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.

Paste TOML, get clean JSON instantly — full TOML 1.0 support, error messages with line numbers, 100% in-browser

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.

Encode, decode, inspect query parameters, process bulk URL lists, and copy clean outputs entirely in your browser.

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.