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Format, validate, and minify JSON

Encode and decode Base64 strings

Encode and decode URL components

Generate UUID v4 values in bulk

Generate SHA-256 and SHA-512 hashes

Test regular expressions with live match highlighting

Decode JWT tokens without verification

Compare two text blocks side by side

Convert Unix timestamps to human-readable dates and back

Convert YAML to JSON and JSON to YAML instantly

Format prompts into OpenAI, Anthropic, and Gemini message structures

Parse .env files into a clean table, JSON, or export format

Validate JSON against a JSON Schema with detailed error messages

Generate JSON Schema from example JSON instantly

Count tokens for GPT-4, Claude, and Gemini models instantly

Convert CSV data to JSON — paste, upload, or download