Sample ZIP Files — Free Download for Testing
Download free sample ZIP archive files for testing file extraction, upload handlers, and archive processing. Available from 1KB to 100MB. Includes password-protected and nested ZIP variants.
sample-1kb.zip
sample-10kb.zip
sample-100kb.zip
sample-500kb.zip
sample-1mb.zip
sample-5mb.zip
sample-10mb.zip
sample-50mb.zip
sample-100mb.zip
sample-with-password.zip
pw: test123
sample-nested.zip
sample-many-files.zip
sample-single-file.zip
sample-corrupt.zip
Use cases for sample ZIP files
- Testing ZIP file upload and extraction in web apps
- Verifying error handling for corrupt/invalid archives
- Testing password-protected archive support
- Load testing archive extraction performance
- Validating ZIP file size limits in applications
- Testing nested archive handling (ZIP inside ZIP)
ZIP file structure explained
[Local file header] → [File data] → [Data descriptor]
...repeated for each file...
[Central directory header] → [End of central directory]ZIP uses the DEFLATE algorithm for compression. Files inside can be individually extracted without decompressing the entire archive.
How to create a ZIP file
Windows
Right-click → Send to → Compressed (zipped) folderLinux / macOS
zip output.zip file1 file2 file3Node.js (archiver)
const archiver = require('archiver');
const output = fs.createWriteStream('output.zip');
const archive = archiver('zip', { zlib: { level: 9 } });
archive.pipe(output);
archive.file('data.txt', { name: 'data.txt' });
archive.finalize();Python
import zipfile
with zipfile.ZipFile('output.zip', 'w') as zf:
zf.write('data.txt')Testing with password-protected ZIP
Password: test123
Use to verify your app handles encrypted ZIP files correctly. Note: Legacy ZIP encryption (ZipCrypto) is weak — AES-256 ZIP encryption is not included in the standard ZIP spec.
Technical specifications
| Format | ZIP (PKZIP) |
| Compression | DEFLATE (most common) |
| Encryption | ZipCrypto (legacy, weak) |
| Max file size | 4 GB per file (ZIP64 for larger) |
| Platform | Universal — built into Windows, macOS, Linux |