1GB sample files — every format
Stress-test territory — uncovers issues only large uploads produce, like progress jitter and OOM. Below: every 1GB sample we host, grouped by file category. All downloads are free, instant, and no signup is required.
- Stress testing upload pipelines end-to-end
- Connection-drop and resume validation
- Large dataset and database dump transfers
- CDN and bandwidth saturation tests
Test files (1)
Browse all test files →test-1gb.bin
Verified file details
- Filename
- test-1gb.bin
- Exact size
- 1,073,741,824 bytes
- Displayed size
- 1 GB
- MIME type
- application/octet-stream
- License
- CC0 / Public Domain
- Download URL
- https://truefilesize.com/files/test/test-1gb.bin
Need a different size?
1MB sample files
Standard small-file size for testing email attachments, basic upload flows, and form validation.
5MB sample files
Common upload-limit ceiling for many SaaS apps and content management systems.
10MB sample files
The default body-size limit on many gateways and the cutoff most apps care about.
50MB sample files
Mid-range size where simple uploads start to fail without chunking or resumable transfers.
100MB sample files
Large file size — exposes timeouts, memory leaks, and missing chunked-upload logic.
500MB sample files
Very large file — required for streaming uploads, S3 multipart, and tus protocol testing.