Format and beautify source code in JavaScript, TypeScript, Python, HTML, CSS, SQL, YAML, XML, and Markdown.
TOML tools (JSON to TOML, TOML to JSON, TOML validator), YAML tools (YAML to JSON, JSON to YAML, JSON to Toon, YAML validator), XML & SQL tools (XML to JSON/YAML/CSV/Toon, XML validator, SQL INSERT to JSON/CSV), and TSV tools (TSV to CSV).
CSS preprocessors (SCSS to CSS, Stylus to CSS, Tailwind to CSS with 80+ class mappings), protobuf tools (schema to TypeScript, binary hex decoder), TypeScript tools (tsconfig analyzer, TypeScript formatter, string template tester, test data generator).
Format and beautify JavaScript code with proper indentation and syntax structure.
Color tools (blindness simulator, palette/shades/tints generator, contrast ratio checker), CSS & media tools (media query generator, CSS to SCSS converter, HTML table to CSV, CSV to HTML table), and generators (conventional commit, Markdown table, Nginx config, IP allowlist). (HTML/CSS/JS minifiers have their own dedicated page.)
Renders GitHub-Flavored Markdown into semantic, accessible HTML with proper heading hierarchy, code syntax highlighting, and table markup.
Code Formatter lets you format and beautify source code in JavaScript, TypeScript, Python, HTML, CSS, SQL, YAML, XML, and Markdown.. Everything runs inside your browser — nothing is uploaded to a server. It works on any device with a modern web browser.
Format and beautify source code in JavaScript, TypeScript, Python, HTML, CSS, SQL, YAML, XML, and Markdown. It's ideal for developers, designers, and anyone who needs to format and beautify source code in javascript, typescript, python, html, css, sql, yaml, xml, and markdown without installing software or sending data to external servers.
Direct text entry, file upload, or URL-based input — depending on the tool. Paste or type your content directly into the provided editor area.
Yes. After the initial page load, Code Formatter runs entirely on your device with no internet connection needed. All processing is done locally.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check individual tool descriptions for specifics.
No. All code processing — formatting, minification, conversion, hashing — runs locally in your browser.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. SQL uses sql-formatter, JSON uses native JSON.parse, and other formatters follow widely adopted formatting rules.
Yes. All developer tools work fully offline after the initial page load.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results.
Diff Checker
Compares two input texts side-by-side, highlighting inserted, deleted, and changed lines with distinct background colors.
Regex Tester
Provides an interactive environment where users can write a regular expression pattern, test it against sample strings, and view real-time match.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
JS Minifier
Strips comments, whitespace, and shortens local variable names in JavaScript source without altering execution semantics.
Base64 Encode/Decode
Encodes text or small files into Base64 strings and decodes them back with automatic MIME-type detection for binary safety.