Test files that tell you what they break.

A deterministic corpus for QA and test engineers — stable URLs, published SHA-256 digests, and a note on the exact bug each file is built to catch. Nothing tracked, nothing to sign up for.

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Need a file that isn't in the catalog?

The on-demand generator streams a file of any size — binary, CSV, JSON, NDJSON, XML, SQL, log, UUIDs or ZIP — straight from a Worker, so nothing is stored and nothing is capped. It also serves httpbin-style endpoints for slow, truncated and error responses that a static file can't reproduce.

Open the generator → Or build files with CLI commands