About this tool
Test every file in a ZIP against its CRC-32 checksum, spot unsafe paths and zip bombs, rebuild a clean ZIP, or create a new (AES) ZIP.
The archive’s central directory is read, then each entry is fully decompressed in the browser and its CRC-32 is checked against the stored value. Paths that are absolute or contain “..” are flagged as unsafe (Zip Slip) and never extracted. Rebuilding copies only the entries that passed into a new ZIP with normalised paths.
Example: a 300-file backup where 2 entries fail the CRC check can be rebuilt into a clean ZIP with the other 298 files.
Data inside a damaged entry cannot be recovered; rebuilding saves the readable files. Protected archives need their password — 1CLIK never guesses or cracks passwords.
Quick steps
- Choose your files — they stay on your device.
- Set the options and check the preview or the test results.
- Download the result. Your original files are never changed.
Files are processed in your browser and are not uploaded to 1CLIK.
FAQ
How does the Archive Integrity Tester & Repair work?
The archive’s central directory is read, then each entry is fully decompressed in the browser and its CRC-32 is checked against the stored value. Paths that are absolute or contain “..” are flagged as unsafe (Zip Slip) and never extracted. Rebuilding copies only the entries that passed into a new ZIP with normalised paths.
What should I keep in mind?
Data inside a damaged entry cannot be recovered; rebuilding saves the readable files. Protected archives need their password — 1CLIK never guesses or cracks passwords.
Are my files uploaded?
No. Everything happens on your device; nothing is deleted or overwritten, and results are new downloads.