What does “download test file” mean here?

Here you can download test file in any size and format—without real content. Developers and QA use such dummy files to verify upload limits, test upload flows, or validate import logic.

dummyfiles.dev generates these files on demand: you choose size (1 KB to 5 GB), type (ZIP, BIN, JPG, PNG, WebP, PDF), and fill mode (random or zero). The download starts directly in the browser.

Features

Size: 1 KB to 5 GB in KB, MB, or GB.

Types: ZIP, BIN, JPG, PNG, WebP, PDF. Content depends on type and mode (e.g. random bytes for load tests).

Modes: Random (barely compressible) or zero (null bytes, highly compressible).

Download: Via web form or Use via the website, optionally with a fixed filename.

Use cases

• Verify upload limits (e.g. max 10 MB)
• Load testing for servers or CDNs
• Test compression behaviour (ZIP)
• Pipeline or upload testing with fixed file sizes
• QA automation: repeatable test files

Highlights

• Files up to 5 GB
• No registration required
• Use via the website, easy to use in scripts or CI
• Optional filename for download

FAQ

How do I download a test file?

On the homepage choose “File by size”, set size and type, click “Create file”.

What file sizes are available?

From 1 KB to 5 GB. Specify in KB, MB, or GB (e.g. 100MB, 2GB).

Do I need an account?

No. Download works without signup.

Can I set the filename?

Yes, optionally with a fixed filename in the form.

What’s the difference between random and zero?

Random: random bytes, hardly compressible. Zero: null bytes only, ZIP becomes very small.

Is this suitable for automated tests or pipelines?

Yes. The Use via the website can be called directly from scripts, pipelines and automated tests.

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