Free Online Tools

Useful, browser-based developer utilities. All processing happens in your browser — nothing is uploaded to the server.

Beautify, validate, minify and download JSON. Free and client-side.

Compare two JSON documents and highlight differences.

Validate JSON syntax with detailed error reporting.

Encode and decode Base64 strings with file support.

Encode and decode URL components and full URIs.

Decode JWT tokens and inspect header and payload.

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes.

Convert between Unix timestamps and human-readable dates.

Compare two text documents and highlight differences.

Test and debug regular expressions with real-time matching.

Convert text between uppercase, lowercase, camelCase, snake_case, and more.

Generate RFC4122 compliant UUIDs with bulk options.

Generate secure random passwords with customizable options.

Format, minify, and validate XML documents.