A better first step for broken files.

FileDoctor provides independent, free diagnostic and cleanup tools for common file problems. We focus on clear evidence and careful recovery.

What we do

Inspect file signatures, structural markers, archive checksums, text syntax and common container boundaries. Where a safe transformation is available, your browser can create a new downloadable file without changing the original.

What we do not do

We cannot reconstruct missing data, guarantee corruption recovery, detect all malware, bypass encryption or verify every byte of every complex file format. See our testing methodology for the actual scope of each check.