Data Integrity & Cryptography
Hash Generator & Checksum Comparator
Instantly generate and compare cryptographic hashes (SHA-256, SHA-512, MD5) for text and files. 100% client-side: files are never uploaded.
Zero-knowledge: 100% processed locally on your device
Frequently Asked Questions
Cryptographic Hashes & Checksums FAQ
What is a cryptographic hash function and what is it used for?
A cryptographic hash function converts arbitrary data into a fixed-size string of characters. It is strictly one-way (irreversible) and used to verify file integrity, securely store credentials, and generate digital signatures.
Is it safe to calculate hashes of my files on this website?
Yes, 100% safe. This tool leverages the browser’s native Web Cryptography API. Files are read directly in local memory and are never uploaded or transmitted to any server.
What is the difference between SHA-256 and MD5?
MD5 produces a 128-bit hash and is cryptographically broken due to collision vulnerabilities. SHA-256 outputs 256 bits and represents the global industry standard for TLS certificates, blockchain, and secure software distribution.
How do I verify if a downloaded file has been tampered with?
Use our "Comparator" tab: compute the hash of your downloaded file and paste the official checksum provided by the software vendor. A match confirms the file is authentic and unaltered.
How can my organization securely store passwords and keys?
Credentials must never be kept in plaintext. Discover Medel Vault, our zero-knowledge password and secret manager for teams.