A 250 MB dummy BIN file (application/octet-stream) for software tests. Extension: .bin.

Use it for API payload tests, CDN/cache behaviour and multi-minute uploads around 250 MB.

Can I use it commercially?

Yes. Dummy files from DummyFiles.dev are free to use in commercial projects, tests and CI. They contain no third-party copyrighted content.

How was it generated?

The file is generated on download with a target size of 250 MB. No account is required.

Yes. The next size is 500 MB. The largest BIN file here is 5 GB.

Dummy file

250 MB dummy file download when only byte length matters: timeouts, quotas, no specific file format.

Go to generator All BIN sizes

A 250 MB BIN is large enough to reveal timeouts and memory issues that 1 MB files never show.

This is a valid BIN of the stated size, generated for testing — not a finished document.

What is this file?: A 250 MB dummy BIN file (application/octet-stream) for software tests. Extension: .bin.
How can I use it?: Use it for API payload tests, CDN/cache behaviour and multi-minute uploads around 250 MB.
Can I use it commercially?: Yes. Dummy files from DummyFiles.dev are free to use in commercial projects, tests and CI. They contain no third-party copyrighted content.
How was it generated?: The file is generated on download with a target size of 250 MB. No account is required.
Are larger files available?: Yes. The next size is 500 MB. The largest BIN file here is 5 GB.