API Performance Profiler — Measure API Speed

Profile API latency: TTFB, download time. Multiple runs, percentiles.

API Performance Profiler: Profile API latency: TTFB, download time. Multiple runs, percentiles. Designed for quick, focused use: paste input, get output, move on with your work. No backend involved — your input is processed in the browser's sandbox. Find it with the other API Tools tools at HttpStatus.com.

Frequently Asked Questions

What input formats does API Performance Profiler accept?

API Performance Profiler accepts the format specified in its description. Paste or type your input directly.

Is my data saved after I close the tab?

No. Client-side tools don't persist input. Once you close or navigate away, your data is gone.

Can I bookmark this tool?

Yes — each tool has a stable URL. Bookmark it for quick access anytime.

Does this tool require an account?

No. All public tools work without an account. Accounts unlock saved history, workspaces, and team features.

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