Privacy File Tools
Verify file checksum
Upload a file and compare its computed hash against an expected checksum. Instantly see if your file matches. 100% browser-local — nothing is uploaded.
100% local.Your file is processed in your browser and is never uploaded.
Drag & drop a file or click to browse
How checksum verification works
When you download software, the publisher often provides a checksum (hash) alongside the file. By computing the hash yourself and comparing it, you confirm the file has not been corrupted or tampered with during download. This tool does the comparison automatically — just paste the expected hash and select the algorithm.
Frequently asked questions
- How do I verify a file checksum?
- Upload your file, paste the expected checksum published by the file author, select the correct algorithm, and click Verify. The tool computes the hash locally and tells you if it matches.
- What algorithms does the verifier support?
- SHA-256, SHA-1, SHA-384, and SHA-512. All are computed using your browser's Web Crypto API — no server involved.
- What if the checksum does not match?
- A mismatch means the file has been modified or corrupted. Re-download the file and try again. If it still does not match, the download source may have been tampered with.
- Is my file uploaded to a server?
- No. The hash is computed entirely in your browser using the Web Crypto API. Your file never leaves your device.