Verify a download in seconds — SHA-256, SHA-1 and MD5 computed on your device, with the expected value matched automatically.
Any file, any size · hashed on your device, nothing is uploaded
No size limit · files are processed on your device and never uploaded · how it works
Runs in your browser. Files are never uploaded — you can go offline after the page loads.
How to use the File Hash Checker
Drop any files.
SHA-256, SHA-1 and MD5 compute on your device; paste the expected checksum if you have one.
A matching hash lights up green — click any hash to copy it.
Easy to use
Drop files, pick options, download. Whole folders at once, no signup, no daily limit.
Best quality
The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.
Private & secure
Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.
Trust, but verify — locally
Download pages publish checksums so you can prove the file arrived intact and untampered. The check only means
something if it happens on your machine — verifying a download by uploading it to a website is circular.
Here the hashing runs on your device's own crypto (SHA-256/SHA-1 via the browser's WebCrypto, MD5 alongside for
older pages), so a multi-gigabyte ISO verifies without going anywhere.
Paste the published checksum and the matching value highlights — no squinting at 64 hex characters. SHA-256 is the
one that proves integrity against tampering; MD5/SHA-1 remain useful for spotting corrupted downloads.
Frequently asked questions
Why verify a checksum?
It proves the file you downloaded is byte-for-byte the file the publisher released — not corrupted mid-download and not tampered with by a mirror. Software downloads, firmware and disk images publish checksums for exactly this.
Which hash should I trust?
SHA-256 — collision-resistant and the modern standard. MD5 and SHA-1 are fine for detecting accidental corruption but are not secure against deliberate tampering; they are computed here because older download pages still publish them.
Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.
No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
No limits. No file-size cap, no queue, no watermark, no account.
Runs on your CPU. Batches use several cores in parallel; nothing is throttled.