File Checksum
Verifying a file's checksum ensures it hasn't been corrupted or tampered with during transfer. Drop any file onto this tool and get its SHA-256 hash instantly. The file is processed in your browser — nothing is uploaded to any server.
Processed on your deviceNo signup required100% free
SHA-256
Client-side only — file never leaves your browserDrop a file here or click to browse
Any file type — processed entirely in your browser
How to Use
- Drag and drop a file onto the upload zone, or click to browse.
- The tool automatically computes the SHA-256 checksum.
- Copy the checksum hash with the copy button.
- Compare it with the expected hash to verify integrity.
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Frequently Asked Questions
What file size is supported?
Any size. The file is read entirely in memory, so very large files (multi-GB) may use significant browser memory.
Why only SHA-256?
SHA-256 is the industry standard for file checksums. It provides an excellent balance of security and performance.
Can I verify against a known hash?
Copy the computed hash and compare it manually with the expected hash. A text diff tool can help for visual comparison.