All tools
Every tool runs locally in your browser — fast, private, and free.
Data & JSON
Format, validate, and convert structured data like JSON, YAML, and XML.
JSON Formatter
Format, beautify, minify, and validate JSON instantly in your browser.
Data & JSON
JSON Validator
Validate JSON syntax and get precise line and column error information.
Data & JSON
YAML ↔ JSON Converter
Convert YAML to JSON and JSON to YAML with instant error feedback.
Data & JSON
XML Formatter
Format, minify, and validate XML documents with pretty indentation.
Data & JSON
Security & Encoding
Decode JWTs, generate hashes, and encode or decode Base64, URLs, and HTML.
JWT Decoder
Decode JWT headers, payloads, and claims — entirely in your browser.
Security & Encoding
JWT Generator
Create and sign JSON Web Tokens with HS256, HS384, or HS512.
Security & Encoding
Base64 Encoder / Decoder
Encode and decode Base64 text with full UTF-8 support.
Security & Encoding
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes with Web Crypto.
Security & Encoding
URL Encoder / Decoder
Percent-encode and decode URLs and query string components.
Security & Encoding
HTML Encoder / Decoder
Convert text to HTML entities and decode entities back to text.
Security & Encoding
Generators
Generate UUIDs, signed JWTs, and cron expressions in seconds.
Testing & Development
Test regular expressions and format SQL with professional editors.
Date & Time
Convert Unix timestamps and work with dates across formats.