File Hash Checker

Calculate a SHA-256 or SHA-512 digest and compare it with a checksum you already have.

Paste or choose an input, select options and process it locally. Review the result before copying or downloading.

Choose a file or drop it here

Options

Algorithm

Expected checksum (optional)

One file up to 50 MB. Web Crypto digest requires the file in memory; processing runs in a dedicated worker and can be cancelled. HTTPS or localhost is required. A matching checksum proves byte equality with that checksum, not that a file is safe.

How to use

What does this tool do?

Compute a file checksum and compare it with a value from a trusted source. SHA-256 and SHA-512 read the original bytes; the name and last-modified date are not included.

File Hash Checker

Compute a file checksum and compare it with a value from a trusted source. SHA-256 and SHA-512 read the original bytes; the name and last-modified date are not included.

Step by step

Paste or choose an input, select options and process it locally. Review the result before copying or downloading.
Choose the algorithm used by the published checksum. SHA-256 produces 64 hexadecimal characters and SHA-512 produces 128; matching hashes do not prove that a file is safe.

Choosing the settings

Option	What changes
Options	Choose the algorithm used by the published checksum. SHA-256 produces 64 hexadecimal characters and SHA-512 produces 128; matching hashes do not prove that a file is safe.
Limits	One file up to 50 MB. Web Crypto digest requires the file in memory; processing runs in a dedicated worker and can be cancelled. HTTPS or localhost is required. A matching checksum proves byte equality with that checksum, not that a file is safe.

Example and expected result

The 5 UTF-8 bytes hello have SHA-256 2cf24dba…938b9824. A newline creates different bytes and a different digest.

If it is not working

Remove spaces from a copied checksum and check its length and algorithm. Files are limited to 50 MB; use HTTPS or localhost for browser cryptography, and cancel if needed.

Formats and limits

One file up to 50 MB. Web Crypto digest requires the file in memory; processing runs in a dedicated worker and can be cancelled. HTTPS or localhost is required. A matching checksum proves byte equality with that checksum, not that a file is safe.

FAQ

What does this tool do?

Compute a file checksum and compare it with a value from a trusted source. SHA-256 and SHA-512 read the original bytes; the name and last-modified date are not included.

Which setting should I choose?

Choose the algorithm used by the published checksum. SHA-256 produces 64 hexadecimal characters and SHA-512 produces 128; matching hashes do not prove that a file is safe.

What are the limits?

One file up to 50 MB. Web Crypto digest requires the file in memory; processing runs in a dedicated worker and can be cancelled. HTTPS or localhost is required. A matching checksum proves byte equality with that checksum, not that a file is safe.

Why did processing fail?

Remove spaces from a copied checksum and check its length and algorithm. Files are limited to 50 MB; use HTTPS or localhost for browser cryptography, and cancel if needed.

Is my input uploaded or saved?

No. Processing runs on your device. Inputs and results stay in this page’s memory until you clear it or leave. They are not uploaded, logged or stored by ToolRobin. Copying places the result on your device’s clipboard.