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File Checksum Compare - verify uploaded file integrity locally

Paste an expected checksum, upload a file, and verify SHA digest matches locally before installing or sharing.

  • Runs locally
  • Category Encoding & Crypto
  • Best for Checking file type, size, metadata, and obvious mismatch signals before sharing.
Nothing is uploaded. Up to 50 files / 100 MB per batch; text and Base64 tools use lower browser-memory limits.
Output

What this tool does

File Checksum Compare is the quick verification step between "downloaded" and "trusted enough to use." Paste the expected SHA-256, SHA-512, SHA-384, or SHA-1 digest from a release page, upload the local file, and the tool computes the actual digest in the browser and reports MATCH or MISMATCH. It is useful for installers, firmware, archives, evidence packages, vendor exports, and any file that arrives through email or chat. The comparison ignores spaces, separators, and common algorithm prefixes in the expected value.

Tool details

Input
Files + Text + Numbers
The page exposes text boxes, numeric controls, file pickers, or structured inputs depending on the tool.
Output
Live result + Copy + Download
The result area focuses on usable output, with copy, download, or preview actions when supported.
Privacy
Browser-side processing
The main tool logic does not call an external API, so inputs normally stay in the current tab.
Save / share
Shareable URL state
Key settings are encoded in the URL so another person can reopen the same setup.
Performance budget
Initial JS <= 34 KB
No WASM budget is declared, keeping the tool quick to open on mobile.
Best fit
Encoding & Crypto · Developer
Category and role tags drive related tools, internal links, and quick fit checks.

How to use

  1. 1. Input

    Paste or drop your content into the tool panel.

  2. 2. Process

    Click the button. All processing is local in your browser.

  3. 3. Copy / Download

    Copy the result or download to disk in one click.

How File Checksum Compare fits into your work

Use it before upload, handoff, archive, support review, or any moment where a file needs one local check before it leaves your machine.

File jobs

  • Checking file type, size, metadata, and obvious mismatch signals before sharing.
  • Preparing mixed folders for upload, archive, intake, or review.
  • Keeping sensitive files in the browser instead of sending them to an account-based service.

File checks

  • Do not treat the extension alone as proof of the real file type.
  • Review metadata before a file goes to customers, vendors, or a public page.
  • Keep the original file until the copied, converted, or exported result is verified.

Good next steps

These links move the current task into a more complete workflow.

  1. 1 File Hash Calculator Compute SHA-1, SHA-256, SHA-384, or SHA-512 hashes for uploaded files entirely in the browser. Open
  2. 2 File MIME Type Inspector Upload files and inspect filename, size, browser MIME type, extension, and magic-byte signature locally. Open
  3. 3 Duplicate File Finder Upload a batch and find exact duplicate files by SHA hash locally, with a Markdown cleanup report. Open

Real-world use cases

  • Verify a downloaded installer

    Paste the published digest and confirm your local file matches before opening it.

  • Check a vendor handoff

    Compare the delivered archive against a checksum in the delivery note before processing it.

Common pitfalls

  • A matching hash is only meaningful when the expected digest comes from a trusted channel.

  • Selecting the wrong hash algorithm will always produce a mismatch.

Privacy

The selected file is hashed locally. Expected and actual digests are shown on screen but not sent to Toolora servers.

FAQ

Tool combos

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Made by Toolora · 100% client-side · Updated 2026-06-14