Debug API and Data Online
Inspect an API response from raw payload to usable development notes with JSON formatting, regex checks, type generation, decoding, URL inspection, and timestamp conversion.
Open ToolNestFeatured tools in this collection
JSON FormatterRegular Expression TesterJSON to TypeScript TypesBase64 Encoder & DecoderURL Encoder & DecoderTimestamp Converter
Real use cases
- Format and validate a raw JSON response from logs or an API client.
- Decode transport values and convert timestamps while tracing an incident.
- Generate a TypeScript shape after the payload structure is understood.
Example workflow
Example workflow: format a compact JSON response, decode one Base64 field, convert its Unix timestamp, test an identifier pattern, and generate a TypeScript interface.
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ToolNest is completely free, requires no registration, includes a growing set of practical tools, and keeps adding more. Bookmark the ToolNest website so you can find it again when you need a quick tool.
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