File Comparer
Compare two files by size and SHA-256 — are they bit-identical?
How to Use
- Drop or pick two files.
- Equal size + equal SHA-256 = identical.
Notes
About the File Comparer
The File Comparer is a simple, free helper for image, audio and file tasks that runs entirely on your own device. Compare two files by size and SHA-256 — are they bit-identical?.
How it works
Type in what you have, and the answer shows up right away. Change anything and it updates by itself. Everything runs in your browser, so it is fast and nothing you type is sent away.
Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.
Frequently Asked Questions
Partial match?
If SHA-256 differs, the files differ — no byte-level diff here; use Text Diff for text.
How big?
Anything your browser can read — processed in chunks.
How do I use the File Comparer?
Just type your numbers. The answer shows up right away — there is no button to press. Change anything and it updates by itself.
Does it cost anything or need an account?
No. The tool is completely free, there is no account to create, and it keeps working offline after the page first loads.
Is anything I type uploaded?
No. The tool works entirely on your device, so the values you enter never leave your browser.
Common Use Cases
Backup check
Did the copy succeed byte-for-byte?
Dedup
Confirm two files are truly identical before deleting one.
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