All tools

Format and beautify JSON with configurable indentation and optional key sorting. Errors are reported with exact line and column.

Beautify messy or minified HTML into clean, indented markup using Prettier, right in your browser.

Format CSS, SCSS and Less stylesheets into readable, consistently indented code.

Beautify JavaScript and JSX with Prettier. Choose indentation, quotes and semicolons.

Format TypeScript and TSX code with Prettier, including types, generics and decorators.

Beautify PHP code following PSR-style formatting with the Prettier PHP plugin.

Format SQL queries for MySQL, PostgreSQL, SQLite, SQL Server and more with keyword casing options.

Pretty print XML documents with proper indentation. Malformed XML is reported with its location.

Format and normalise YAML files with consistent indentation using Prettier.

Minify JSON by removing all unnecessary whitespace. Shows the size saved.

Minify HTML by removing comments and collapsing whitespace while preserving pre, textarea, script and style blocks.

Minify CSS by stripping comments and whitespace to reduce stylesheet size.

Minify and mangle JavaScript with Terser for smaller bundles. Supports modern ES syntax.

Minify XML by removing comments and whitespace between tags.

Compress SQL queries onto a single line, removing comments and redundant whitespace.

Validate JSON syntax and pinpoint errors by line and column. Shows structure statistics for valid documents.

Check that XML is well-formed and find the exact location of syntax errors.

Validate YAML syntax and see the parsed result as JSON.

Test JavaScript regular expressions with live match highlighting, capture groups and flags.

Explore JSON as a collapsible tree with types, counts and copyable paths.

Preview HTML live in a secure sandboxed frame while you edit the source.

Preview GitHub-flavoured Markdown live with sanitised HTML output.

Encode text to Base64 or decode Base64 to text with full UTF-8 and URL-safe support.

Percent-encode or decode URLs and query string components.

Escape special characters as HTML entities or decode entities back to text.

Decode JSON Web Tokens, inspect header and claims, check expiry and verify HMAC signatures locally.

Create signed JSON Web Tokens with HS256, HS384 or HS512 from a custom header and payload.

Convert text to \uXXXX escape sequences and back, including emoji and astral characters.

Convert text between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case and more.

Break a URL into protocol, host, path, query parameters and fragment.

Count characters, words, lines, sentences and bytes, with estimated reading time.

Compare original and changed text or code side by side with highlighted additions, deletions and modified lines.

Compare two JSON documents semantically. Keys are normalised and sorted so only real changes are highlighted.

Run JavaScript online in an isolated browser sandbox. See console output, errors and execution time instantly.

Compile and run TypeScript online. Types are stripped and the result executes in a sandboxed worker.

Run Python 3 online using a WebAssembly sandbox with the standard library. Supports stdin input.

Run PHP 8 code online. Execution happens in an isolated sandbox server, never on the web host.

Convert JSON arrays to CSV with automatic column detection, nested object flattening and custom delimiters.

Convert CSV to a JSON array with header detection, type inference and delimiter auto-detection.

Convert JSON to well-formed XML with a configurable root element and attribute support.

Convert XML to JSON, preserving attributes and repeated elements as arrays.

Convert JSON to clean, human-readable YAML.

Convert YAML documents to formatted JSON with syntax validation.

Convert JSON to a PHP array literal using short or long array syntax.

Generate TypeScript interfaces from JSON samples, including nested objects and arrays.

Convert a JSON array of objects into SQL INSERT statements for MySQL, PostgreSQL or SQLite.

Convert HTML to a downloadable PDF with live preview, paper sizes, orientation, margins, page breaks and page numbers.

Convert Markdown to clean, sanitised HTML markup ready to paste into any page.

Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36, with BigInt precision.

Convert colours between HEX, RGB, HSL and CSS formats with a live preview.

Create a professional email signature from ready-made templates, or paste your own HTML. Copy it into Gmail, Outlook or Apple Mail, or download the HTML.

Generate strong, cryptographically secure passwords with custom length, character sets and strength meter.

Generate UUID v4 and time-ordered UUID v7 identifiers in bulk, with formatting options.

Generate up to 1,000 rows of realistic sample data — names, emails, phones, companies, addresses — and download as CSV or Excel (.xlsx).

Create QR codes for websites and text. Custom size and colours, error correction, live preview, and PNG or SVG download.

Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes and HMACs of any text.

Generate placeholder text as paragraphs, sentences or words, as plain text or HTML.

Generate random strings, tokens and API keys in hex, Base64URL or custom alphabets.

Generate SEO meta tags, Open Graph and Twitter Card markup for any web page.

Design linear and radial CSS gradients visually and copy the generated CSS code.

Compare the current time in any two time zones, with UTC offsets, time difference and daylight saving changes.

Convert a date and time between time zones with correct daylight saving handling, including gaps and overlaps.

Convert Unix epoch timestamps (seconds or milliseconds) to dates and back, in any time zone.

Calculate the exact difference between two dates in years, months, days, hours and business days.