Hashing & Checksums

Hashing & Checksums brings together 6 free tools with no sign-up to compute and compare fingerprints. Text fingerprint produces SHA-256, SHA-384 or SHA-512, File fingerprint checks a file locally, and HMAC Generator signs a message with a secret key. PBKDF2 derivation, Fingerprint checker and Identifier Hash complete the set. These tools serve developers, administrators and anyone concerned with content integrity.

Start from the content you need to process. For text, use Text fingerprint. For a file, prefer File fingerprint. If you need to authenticate a message, HMAC Generator is relevant, while PBKDF2 derivation derives a key from a password. Fingerprint checker compares content against an expected value. Identifier Hash helps recognize a format. Choose based on whether you compute, verify, sign or identify.

How to use

  1. For text to check, start with Text fingerprint and choose SHA-256, SHA-384 or SHA-512 as needed.
  2. For a file, use File fingerprint and compare the result with the expected value before sharing.
  3. If a message must be signed, use HMAC Generator, then PBKDF2 derivation if you start from a password to obtain a key.
  4. To verify or recognize a value, finish with Fingerprint checker or Identifier Hash depending on whether you compare or identify.

Frequently asked questions

What is the difference between text and file fingerprints?

Text fingerprint computes a digest from entered text. File fingerprint checks a file fingerprint locally. Both target integrity, but the starting point differs: text or a file.

What is HMAC Generator for?

It signs a message with a secret key, which helps verify authenticity and integrity. This is useful for tests or technical implementations. The tool is free, requires no sign-up and runs in the browser.

How do I compare an expected fingerprint?

Use Fingerprint checker and paste the expected value with the related content. If the format looks unknown, Identifier Hash helps spot the likely algorithm. Text fingerprint or File fingerprint remains the source of the calculation.

When should I use PBKDF2 derivation instead of HMAC Generator?

PBKDF2 derivation turns a password into a strong key. HMAC Generator signs a message with an already defined secret key. The choice depends on your starting point: a password to derive or a message to authenticate.

Tools in the same category