File Hash Comparison
📦 File Hash Comparison Tool Source Code $4.99
Get the complete, ready‑to‑deploy HTML file with all styling and logic. This is the exact code powering the demo above — no dependencies, works offline, and 100% client‑side. Supports MD5, SHA‑1, SHA‑256, SHA‑384, and SHA‑512. Perfect for integrity verification in your own projects. One‑time purchase, lifetime access.
What Is a File Hash Comparison Tool?
This utility computes the cryptographic hash of any file you select and lets you compare it against a known hash value. It's a fundamental tool for verifying file integrity — ensuring that a file hasn't been corrupted or tampered with during transfer or storage. Developers often use it to validate downloaded software, firmware updates, or configuration files. The tool supports multiple hash algorithms, from fast (MD5) to highly secure (SHA‑512).
How to Use
- Select a file using the file picker. The file is read entirely in memory.
- Choose the hash algorithm you want to use (MD5, SHA‑1, SHA‑256, SHA‑384, SHA‑512).
- Optionally enter an expected hash in the text field — the tool will highlight whether the computed hash matches.
- Click "Compare" to compute the hash. The result appears in the right panel, along with a match status if you provided an expected hash.
Frequently Asked Questions
Is the file uploaded to a server?
No. The file is read and processed entirely in your browser using the File API and Web Crypto API. No data is ever sent over the network.
Why does the tool support MD5 if it's considered broken?
MD5 is still widely used for non‑security integrity checks (e.g., verifying file downloads) due to its speed. For security‑sensitive use, we recommend SHA‑256 or higher.
Can I compare large files?
Yes, but note that the file is loaded into memory. For very large files (e.g., >1 GB), performance may degrade. The tool is intended for files up to a few hundred megabytes in most browsers.
Disclaimer: This tool performs all operations locally in your browser. No data is stored, transmitted, or logged. You are responsible for verifying the authenticity of any expected hashes you provide.