A 25 MB dummy BIN file (application/octet-stream) for software tests. Extension: .bin.

Use it to verify upload limits, timeouts, progress bars and storage quotas around 25 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 25 MB. No account is required.

Yes. The next size is 50 MB. The largest BIN file here is 5 GB.

Dummy file

Download a 25 MB dummy file. Test file for upload, storage and API tests — fixed size, any format.

Go to generator All BIN sizes

Fixed-size test files are more repeatable than random files from your computer: every run is 25 MB, every environment matches.

Download the 25 MB BIN and follow the same upload path as your users. Check the file type, extension .bin and stored size.

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

What is this file?: A 25 MB dummy BIN file (application/octet-stream) for software tests. Extension: .bin.
How can I use it?: Use it to verify upload limits, timeouts, progress bars and storage quotas around 25 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 25 MB. No account is required.
Are larger files available?: Yes. The next size is 50 MB. The largest BIN file here is 5 GB.