Free Developer Tools

Validate, format, and minify JSON with syntax highlighting and error detection.

• • Syntax validation
• • Pretty print formatting
• • Minification

XLSX to JSON

Convert Excel spreadsheets and CSV files to JSON format instantly.

• • Drag & drop upload
• • Multi-sheet support
• • CSV compatible

YAML ↔ JSON

Convert between YAML and JSON formats. Perfect for K8s and Docker configs.

• • Bi-directional conversion
• • Kubernetes configs
• • Docker Compose files

JSON to TOON

Convert JSON to Token-Oriented Object Notation. ~40% fewer tokens for LLM prompts.

• • LLM prompt optimization
• • Token-efficient format
• • Tabular array encoding

JWT Decoder

Decode and inspect JWT tokens with header and payload visualization.

• • Header inspection
• • Payload decoding
• • Expiration check