March 24, 20262 min read
Create 7Z Archive — Compress Files into 7Z Format
Create 7Z archives with strong LZMA2 compression. Compress files up to 70% smaller than ZIP. Free online tool.
7z archive compression lzma2 file compression
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7Z is one of the most efficient archive formats available, using LZMA2 compression to produce files significantly smaller than ZIP or RAR. The MyPDF Create 7Z tool lets you bundle and compress files into a 7Z archive directly in your browser.
How to Create a 7Z Archive
- Upload — Drag and drop the files you want to archive into the tool.
- Configure — Choose a compression level (fast, normal, or maximum) and optionally set a password.
- Download — Save the resulting
.7zarchive to your device.
7Z vs Other Archive Formats
| Feature | 7Z | ZIP | TAR.GZ |
|---|---|---|---|
| Compression ratio | Best | Good | Good |
| Algorithm | LZMA2 | Deflate | gzip |
| Password encryption | AES-256 | ZipCrypto (weak) | Not built-in |
| Cross-platform | Requires 7-Zip or compatible | Native OS support | Native on Linux/macOS |
| Solid archive support | Yes | No | N/A |
Practical Tips
- Use maximum compression for archival. If speed is not critical, maximum compression can reduce file sizes by an additional 10-20% compared to the normal setting.
- Add a password for sensitive files. 7Z uses AES-256 encryption, which is far stronger than the default ZipCrypto used by ZIP files. Use the Password Archive tool for additional options.
- Consider ZIP for sharing. If the recipient may not have 7-Zip installed, create a ZIP instead with the Create ZIP tool for universal compatibility.
Can I create a 7Z archive with folder structure preserved?
Yes. The tool preserves the directory hierarchy of your uploaded files in the resulting archive.
What is the maximum file size I can compress?
The browser-based tool handles files up to several hundred megabytes. For very large archives, a desktop tool like 7-Zip is recommended.
Can I extract a 7Z archive with this tool?
Use the dedicated Extract 7Z tool to decompress and extract files from existing 7Z archives.
Related Tools
- Extract 7Z — Extract files from 7Z archives.
- Create ZIP — Create universally compatible ZIP archives.
- Password Archive — Password-protect any archive format.
- Create TAR.GZ — Create compressed tar archives.
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