ZIP files are a common way to bundle and share multiple documents, images, or projects. Unfortunately, they can sometimes become corrupted due to incomplete downloads, storage errors, or transmission issues. That’s where the GUW ZIP Repair tool comes in. This free, online solution scans damaged ZIP archives, looks for recoverable file headers, and reconstructs as much data as possible — all directly in your browser. Since it works entirely client-side, none of your files are ever uploaded to a server, keeping your data private.
The tool is designed for simplicity. Just select a corrupted ZIP, click “Repair ZIP,” and then download the reconstructed archive. While results vary depending on the extent of corruption, this tool can often recover important files that would otherwise be lost. For users who frequently work with archives, our GUW Free Archiver is another helpful utility that supports creating, extracting, and managing ZIP files. If you’re dealing with disc image formats instead of ZIPs, try our GUW ISO Opener to safely inspect ISO contents.
How to Use GUW ZIP Repair
- Go to the GUW ZIP Repair page.
- Upload the corrupted ZIP file using the file chooser.
- Click the red “Repair ZIP” button to start the recovery process.
- Download the repaired archive if recoverable entries are found.
Pros
- Completely free and works in your browser.
- No file uploads — privacy-friendly.
- Simple interface, easy to use.
Considerations
- Best-effort recovery — not all files can be salvaged.
- Severely damaged or encrypted ZIPs may remain unrecoverable.
FAQ
Does GUW ZIP Repair work offline?
Yes, once the page is loaded, all processing is client-side. However, you’ll need an internet connection to load the tool initially.
Can it repair password-protected ZIPs?
No, encrypted archives are not supported — only standard ZIPs can be scanned for recovery.
Is there a file size limit?
The tool runs in your browser memory, so large ZIPs may be limited by your device’s RAM. For typical files up to a few hundred MB, it should work smoothly.
Conclusion
The GUW ZIP Repair tool offers a fast and privacy-friendly way to recover files from corrupted archives without installing extra software. While it cannot guarantee full recovery in every case, it is an excellent first step whenever a ZIP file refuses to open. Combined with other utilities like the GUW Free Archiver and GUW ISO Opener, you’ll always have reliable options to manage and troubleshoot your compressed files effectively.