Create ZIP Files Online
Add multiple files and create a ZIP archive instantly in your browser. Choose your compression level and download.
Drop files here or click to browse
Add multiple files to create a ZIP archive
Create ZIP archives from multiple files instantly
Three compression levels: Store, Normal, and Maximum
Drag-and-drop or file picker — add files easily
100% client-side — files never leave your device
No file size limits or file count restrictions
No watermarks, no sign-up required
Frequently Asked Questions
How does the ZIP creator work?
Simply drag and drop your files or use the file picker to add them. Choose your compression level, click Create ZIP, and download the resulting archive — all processed in your browser.
What's the difference between the compression levels?
Store adds files to the ZIP without compression (fastest, largest size). Normal uses DEFLATE level 6 for a good balance. Maximum uses DEFLATE level 9 for the smallest possible ZIP.
Is there a file size or count limit?
There are no artificial limits. However, since everything runs in your browser, very large files (several GB) may be slow or run into browser memory limits.
Are my files safe?
Absolutely. Compresso processes everything in your browser — your files are never uploaded to any server. Your data stays completely private on your device.
Can I create password-protected ZIPs?
Not currently. The ZIP creator uses standard ZIP compression without encryption. For password protection, use a desktop tool like 7-Zip after downloading.
What file types can I add to the ZIP?
Any file type works — images, documents, videos, code, or any other files. Simply drag them in and they'll be added to the archive.