Which checksum algorithms are supported?

Standard SHA algorithms, matching the format most software publishers use when they list a checksum alongside a download.

What does it mean if the checksums don't match?

The file you have differs from what the publisher released — it could be corrupted from an incomplete download, or in rarer cases, tampered with. Re-download from the original source rather than trusting a mismatched file.

Where do I find the checksum to compare against?

Reputable software publishers list it on the download page or in a separate checksum file alongside the download itself.

Does File Checksum Verifier upload my files to a server?

No. File Checksum Verifier runs entirely in your browser using on-device processing, your files never leave your device.

File Checksum Verifier

Verify a downloaded file against a published SHA checksum.

Runs in your browser

Drop a file here

Choose File

Algorithm

Expected checksum

About this tool

A file's checksum is a short fingerprint that changes completely if even one byte of the file is different, which is exactly why software downloads are often published alongside a SHA checksum — to let you confirm the file that arrived on your machine is bit-for-bit identical to what the publisher actually released, not corrupted in transit or tampered with. This tool computes a downloaded file's checksum and compares it against the one you were given, confirming a match or flagging a discrepancy.

Frequently asked questions

Compare File Hashes

Check whether two files are identical by comparing their hashes.

Hash Generator

Generate SHA-1, SHA-256 and SHA-512 hashes from text or a file.

Zip & Unzip Files

Combine files into a ZIP archive, or extract files from one.

File Size Converter

Convert between bytes, KB, MB, GB, and their binary (KiB/MiB/GiB) equivalents.

File Type Detector

Detect a file's true type from its byte signature, not just its extension.

Duplicate File Finder

Find identical files among a batch by comparing their content hash.

Batch File Renamer

Rename many files at once using a pattern, and download them as a ZIP.

File Extension Changer

Rename a file's extension without converting its actual format.

Hex Viewer

View the raw bytes of any file as a hex and ASCII dump.

File to Base64 Converter

Encode any file as Base64, or decode Base64 back into a downloadable file.

File Metadata Viewer

View a file's name, size, type and last-modified date.

GZIP Compressor

Compress or decompress a file using GZIP.

PDF Tools

Merge, split, compress and convert PDF files.

Image Tools

Compress, resize, crop and convert images.

Link & QR Tools

Shorten links and generate QR codes and barcodes.

Audio Tools

Convert audio files and turn text into speech, or speech into text.

Video Tools

Compress and process video files, right in your browser.

Developer Tools

JSON, encoding, hashing and text utilities for developers.

SEO & Web Tools

Meta tags, sitemaps, schema markup and other on-page SEO utilities.

Data & Spreadsheet Tools

Clean, convert and inspect CSV, TSV and tabular data.

Business Tools

Invoices, quotations, receipts and other business documents.

Social Media Tools

Resize images for social platforms, count hashtags and preview posts.