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Developer Tools

JSON Schema Builder & Validator

Generate JSON schemas from example data and validate JSON against schemas. Perfect for API development and LLM output validation.

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Base64 Encode / Decode

Encode text to Base64 or decode Base64 to text instantly.

Color Converter

Convert colors between HEX, RGB, and HSL formats with live preview.

Chmod Calculator

Calculate Unix file permissions with an interactive checkbox grid. Convert between octal, symbolic, and chmod command formats.

Cron Expression Explainer

Parse cron expressions into plain English and see the next 5 scheduled run times.