Sample ZIP File Download — 1 MB to 100 MB or Any Size

ZIP is the world's default archive format — it is the first file type users reach for when bundling files and the format most upload systems need to handle correctly. A valid test ZIP is harder to fake than it sounds: the file requires correct local file headers, a central directory, and an end-of-central-directory record, or extraction tools will report a corrupt archive. Every ZIP generated here satisfies those requirements and extracts cleanly, produced at any exact byte count, entirely in your browser.

Common ZIP test sizes

Each preset is generated in your browser at exactly that many bytes (decimal: 1 MB = 1,000,000 bytes). For any other size, use the generator above.

1 MB sample ZIP file

A 1 MB ZIP sits at the size of a typical software plugin, icon set, or small project archive — common enough that most upload systems expect to handle it without complaint. This file extracts cleanly in every tool that handles ZIP archives, including 7-Zip, macOS Archive Utility, and Windows Explorer. Generated in your browser; nothing is uploaded to a server.

5 MB sample ZIP file

Five megabytes is a realistic size for a frontend build artifact, a small WordPress plugin package, or an image asset collection — exactly the size range where upload timeout settings and storage tier pricing start to matter. A valid 5 MB ZIP that extracts cleanly is the right test case for verifying those boundaries without involving your real project files.

10 MB sample ZIP file

Ten megabytes is the common limit for free file-hosting tiers and the upper boundary for many email attachment filters. Testing your upload pipeline at exactly this size — with a valid, extractable ZIP — confirms whether your system correctly enforces or passes that limit. Generated in your browser, extracts cleanly in any standard tool.

50 MB sample ZIP file

A 50 MB ZIP is the size of a medium software release, a media asset bundle, or a compiled application package. Use it to test storage API upload timeouts, CDN transfer behavior for large archives, and ZIP library memory handling when the central directory is proportionally large. Valid archive, correct end-of-central-directory record, generated entirely in your browser.

100 MB sample ZIP file

One hundred megabytes is a serious archive — the kind that separates streaming-aware ZIP extractors from ones that try to buffer everything in memory. Use it to benchmark file transfer throughput, stress-test your storage API's handling of large multipart uploads, and confirm your archive extraction code scales without running out of heap. Valid ZIP that extracts cleanly, generated entirely in your browser.

Common use cases for ZIP test files

Testing file upload systems that accept or restrict archive formats
Validating download servers and CDN byte-range request handling
Stress-testing archive extraction pipelines and ZIP library memory handling
Checking backup and restore workflows that produce or consume ZIP archives

Related formats

Sample File Generator — all 20 formats, any exact size, free in-browser download.

Frequently asked questions

Does the ZIP actually extract successfully?

Yes. The archive contains one or more valid entries plus a correct end-of-central-directory record. 7-Zip, macOS Archive Utility, Windows Explorer, and Python's zipfile module all extract it without errors.

Is the ZIP compressed or stored?

Stored (DEFLATE compression level 0). Compression ratios vary by content, which would make exact byte targeting unreliable. Stored mode ensures the file is the precise size you requested every time.

Can I use this to test upload systems that restrict ZIP files?

Yes — and this is one of the most important test cases. A valid ZIP that opens is more useful than a corrupt one, because a filtering system that incorrectly passes a malformed ZIP may still block a valid one. Testing with a genuinely valid archive is the only way to confirm correct behavior.

Download a Sample ZIP File (Any Size)