A 100 KB dummy BIN file (application/octet-stream) for software tests. Extension: .bin.

Use it as a tiny fixture: form uploads, unit tests, email attachments and CI pipelines.

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 100 KB. No account is required.

Yes. The next size is 250 KB. The largest BIN file here is 5 GB.

Dummy file

Free 100 KB dummy file (BIN): test file for generic upload fixtures when you only need bytes.

Go to generator All BIN sizes

This 100 KB BIN is a small test file. Save it, reuse it in tests, and expect the same size in every environment.

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

What is this file?: A 100 KB dummy BIN file (application/octet-stream) for software tests. Extension: .bin.
How can I use it?: Use it as a tiny fixture: form uploads, unit tests, email attachments and CI pipelines.
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 100 KB. No account is required.
Are larger files available?: Yes. The next size is 250 KB. The largest BIN file here is 5 GB.