Developer Tools
Format, validate, encode and decode — all processed locally for privacy.
25 tools
JSON Formatter
Format, indent and inspect JSON with error reporting.
JSON Validator
Validate JSON and get the exact line and column of any error.
JSON Minifier
Strip whitespace to make JSON payloads as small as possible.
XML Formatter
Pretty-print and validate XML documents.
HTML Formatter
Clean up and indent HTML markup.
CSS Formatter
Format and tidy CSS stylesheets.
JavaScript Formatter
Indent and tidy JavaScript source.
SQL Formatter
Format SQL queries into a readable, consistent layout.
Regex Tester
Test regular expressions against sample text with live match highlighting.
Base64 Encoder
Encode text or files to Base64.
Base64 Decoder
Decode Base64 back into readable text.
URL Encoder
Percent-encode text for safe use in URLs.
URL Decoder
Decode percent-encoded URLs back to plain text.
JWT Decoder
Inspect the header, payload and expiry of a JSON Web Token.
UUID Generator
Generate cryptographically random UUIDs in bulk.
Hash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 digests.
MD5 Generator
Generate an MD5 checksum for text or files.
SHA256 Generator
Generate a SHA-256 hash for text or files.
Timestamp Converter
Convert between timestamps and human-readable dates in any timezone.
Unix Timestamp Converter
Convert Unix epoch seconds and milliseconds to dates.
Color Converter
Convert colours between HEX, RGB, HSL and HSV.
HEX/RGB Converter
Convert quickly between HEX and RGB colour notation.
Cron Generator
Build cron expressions and read back what they mean in plain English.
HTML Entity Encoder
Escape characters into safe HTML entities.
HTML Entity Decoder
Turn HTML entities back into plain characters.