I know first hand how frustrating it can be when trying to open a damaged ZIP file that contains content that is can otherwise be difficult to replace. A couple of months ago someone had sent me a ZIP archive that had a handful of files, and they had removed the files from their machine after they thought they had successfully sent them over to me. By the time it reached me they had gotten corrupt, and it would have taken hours for them to reproduce the content.
In an attempt to recover the files I started searching for some free tools to repair the ZIP archive. I came across the DiskInternals ZIP Repair app that met my needs perfectly. After a quick install I gave it the path to the corrupted ZIP file, and from there it did its thing. In no time at all this free app had produced a new archive that contained all the files that weren’t corrupt. I happened to get lucky because 4 out of the 5 files it was able to retrieve were the ones I actually needed. Phew! Crisis averted.
This isn’t an app you probably want around all the time, but it can be invaluable whenever you come across an invalid ZIP archive. Keep this little guy in your back pocket in case you ever need it.
DiskInternals ZIP Repair Homepage (Windows only; Freeware)