JSON Formatter
Prettify, minify, and validate JSON.
25 tools
Developer tools
Everyday developer utilities: JSON formatting, JWT decoding, regex testing, UUID and hash generation, cron parsing.
Search by name, task or keyword.
25 results
JWT Decoder
Decode, sign, and verify JSON Web Tokens.
Regex Tester
Test regular expressions with live matches.
UUID Generator
Bulk-generate v4 UUIDs.
ULID Generator
Generate ULIDs and decode their timestamps.
NanoID Generator
Generate NanoIDs with length and alphabet presets.
HMAC Generator
HMAC-SHA-256 / SHA-512 signatures via Web Crypto.
Hash Generator
MD5, SHA-1, SHA-256, SHA-512.
SQL Formatter
Pretty-print or minify SQL queries.
Password Generator
Create strong random passwords.
HTML Formatter
Beautify or minify HTML without breaking whitespace-sensitive markup.
JS Minifier/Beautifier
Beautify or minify JavaScript — comments and whitespace only, never breaks your code.
JSON Diff
Compare two JSON documents by structure, not text.
Chmod Calculator
Convert Unix permissions between octal and symbolic.
Bitwise Calculator
AND / OR / XOR / NOT / shifts with binary visualization.
XML Formatter
Pretty-print or minify XML and detect malformed tags.
curl Converter
Convert curl -X/-H/-d into fetch and axios snippets.
JSON to TypeScript
Infer TypeScript interfaces from a JSON sample.
JSON Schema Generator
Infer draft-07 JSON Schema from a sample.
Cron Builder
Build cron from fields and parse expressions with a summary.
JSON ⇔ XML Converter
Convert between JSON and XML.
Test Data Generator
Generate dummy JSON / CSV from a field schema.
.htaccess Generator
Build redirects, HTTPS, cache, and security headers.
ASCII Art Text
Figlet-style ASCII art headings (built-in font).
JSON Schema Validator
Validate JSON data against a schema.