File Hash Generator & Checksum
Compute cryptographic SHA-256, SHA-512, SHA-1, and MD5 checksums of any file for integrity verification.
Select or Drop File to Compute Checksums
Compute SHA-256, SHA-512, SHA-1, and MD5 hashes privately with Web Crypto API
About File Hash Generator & Checksum
Verify download integrity and file authenticity without uploading data. Reads files chunk-by-chunk using the browser Web Crypto API to generate cryptographic hashes instantly.
How to Use File Hash Generator & Checksum
Select any file from your computer (any size supported).
The tool computes SHA-256, SHA-512, SHA-1, and MD5 hashes.
Compare against a provider checksum with our instant verification matcher.
Copy the computed hash to clipboard.
Supported Formats & Limits
- Supported Inputs: ALL FORMATS
- Guest Maximum Size: 25 MB
- Logged-in Max Size: 100 MB
- System Compatibility: Windows, macOS, Linux, iOS & Android
Privacy & Security Guarantee
This tool processes your files entirely inside your web browser using client-side JavaScript, WebAssembly, and Canvas APIs. Your document is never uploaded to any external server, guaranteeing total confidentiality.
Frequently Asked Questions
Can I check very large files like ISO images?
Yes, because the calculation runs locally via Web Streams, even gigabyte-sized files can be processed without using network bandwidth.