Developer Tools › Data & Encoding
UUID Generator
Generate random UUIDs (v4), validate existing ones, and create batches instantly. Features history and bulk operations.
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JSON Formatter & Validator
Validate, repair, beautify, and minify JSON data. Features real-time error highlighting and auto-fix for common syntax issues.
HTML Formatter
Beautify and format HTML with proper indentation. Works with fragments and embedded styles/scripts.
Base64 Encode / Decode
Robustly encode and decode Base64 strings, including URL-safe variants and binary data.
URL Encode / Decode
Encode and decode URLs with support for full URLs and query parameters. Handles Unicode, detects already-encoded strings, and validates encoding sequences.