File Hash Checker Developer
Verify a download by checking its MD5, SHA-1 and SHA-256 — without uploading it.
File Hash Checker is a free online tool that verify a download by checking its MD5, SHA-1 and SHA-256 — without uploading it. It accepts any file type. It runs entirely in your web browser using WebCrypto, so files are processed on your own device and never uploaded to a server. There is no sign-up, no file size limit imposed by the site, no watermark and no paid tier.
- Price
- Free — no account, no quota, no watermark
- Category
- Developer
- Where it runs
- In your browser, on your device
- Files uploaded
- None
- Input
- any file type
- Technology
- WebCrypto
- Settings
- None — it just works
- Works offline
- Yes, after the first visit
About File Hash Checker
Checksums published next to a download let you confirm the file arrived intact. Every other online checker needs your file on their server; this one reads it locally with the File API.
How to use it
- Add your files — drag them in, or click to browse. Order matters, so add them in the order you want.
- The defaults are a reasonable starting point.
- Press "Hash files", then download what comes back.
Under the hood
| Runs on | WebCrypto — computes the digest natively |
| Accepts | any file type |
Questions
Which file types can I use?
Any file type. Because decoding is handled by your browser rather than a conversion server, support tracks whatever your browser can already open.
Is there a file size limit?
No imposed limit — there is no server quota to hit. The real ceiling is your device's memory, since the whole file is held in RAM while it is processed. Desktop browsers cope with very large files; phones give up sooner.