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Format API Response Online
Pretty-print and inspect API JSON. Use API Response Formatter in your browser with no signup, no daily limit, and no backend processing for tool input.
Problem
You need messy or minified data to become readable enough for debugging, documentation, or sharing.
What to do
Formatting does not change the meaning of the data. It makes structure visible so errors, nested fields, and unusual values are easier to spot.
- 1Paste the raw content into API Response Formatter.
- 2Choose pretty-print, minify, indentation, or formatting options.
- 3Copy the formatted result for review or reuse.
Use the browser tool
API Response Formatter is a free, browser-based tool that helps you make messy data readable. Pretty-print and inspect API JSON. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.
People also ask
- How do I use API Response Formatter?
- Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Pretty-print and inspect API JSON.
- Is my data uploaded or stored anywhere?
- No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
- Is API Response Formatter free?
- Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.