Developer Tools
Format code, validate data, and generate utilities.
A toolkit for developers: format and validate JSON, encode Base64 and URLs, generate UUIDs, hashes and tokens, and test regular expressions — all running instantly in your browser.
14 tools in this category
JSON Formatter
Format, validate, and minify JSON with clear error messages.
Base64 Encoder
Encode and decode Base64 text safely in your browser.
URL Encoder / Decoder
Encode or decode URL components and full URLs.
HTML Entity Encoder
Escape or unescape HTML entities safely.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes.
UUID Generator
Generate random RFC 4122 version 4 UUIDs.
Random Token Generator
Generate cryptographically strong random tokens and keys.
Password Strength Checker
Estimate password strength, entropy, and crack time.
JSON to CSV
Convert arrays of JSON objects into CSV files.
CSV to JSON
Convert CSV data into formatted JSON.
JWT Decoder
Decode and inspect JSON Web Token headers and payloads.
HTML Minifier
Minify HTML by removing comments and unnecessary whitespace.
CSS Minifier
Compress CSS by removing comments and redundant whitespace.
Regex Tester
Test regular expressions and inspect matches and capture groups.