Code & Data

JSON formatter & validator

Format, minify or validate JSON, with the line and column of any error and a warning for numbers that lose precision.

Available

URL encode / decode

Percent-encode or decode text and URLs, with plain errors for malformed % sequences.

Available

Base64 encode / decode

Encode text to Base64 or decode it back, UTF-8 safe, with optional URL-safe output.

Available

UUID generator

Generate random version 4 UUIDs with the browser crypto API.

Available

Password generator

Generate strong random passwords in your browser, with an entropy estimate. Nothing is sent or stored.

Available

Hash text (SHA)

SHA-1, SHA-256, SHA-384 and SHA-512 of any text, as hex or Base64.

Available

JWT decoder

Decode a JSON Web Token header and payload and read its dates. The signature is not verified.

Available

Unix timestamp converter

Convert Unix seconds or milliseconds to a date, a date to a timestamp, or show the current time.

Available

CSV and JSON converter

Convert CSV to JSON or JSON to CSV, with header and delimiter options and quoted-newline support.

Available

XML formatter & validator

Pretty-print XML or check that it is well-formed.

Available

SQL formatter

Format SQL queries for standard SQL, PostgreSQL, MySQL, SQLite or SQL Server.

Available

HTML beautifier

Re-indent HTML so it is easy to read.

Available

HTML entities encode / decode

Escape text for HTML or turn entities like & and © back into characters.

Available

Colour converter

Convert between HEX, RGB and HSL and get a plain description with contrast ratios.

Available

Regex tester

Test a JavaScript regular expression: matches, groups, named groups, a replace preview and a time limit against runaway patterns.

Available

XML and JSON converter

Convert XML to JSON and back with a documented mapping: attributes as "@name", text as "#text", repeated siblings as arrays.

Available