Online Hash Generator

The essence of the hash function is to convert any source content: a text file, a text string, a password into a fixed-length string, while it will be unique for each source content. And the most remarkable thing is even the slightest change in the input data. For example, one changed letter leads to a drastic change in the result. It is this property that is essential for file integrity verification, password storage, and version control purposes.

MD5 and SHA-1 are quite old algorithms that are still successfully used to calculate checksums and quickly verify file matches, but are no longer recommended for cryptographic password protection due to the known vulnerabilities of such algorithms.

SHA-256 and SHA-512 (the SHA-2 family) are the current standard used in digital signatures, blockchain, TLS certificates and, of course, in passwords with salt.

CRC32 is not a cryptographic, but a control function optimized for the rapid detection of accidental data transmission errors; it is used in ZIP archives, Ethernet frames, and integrity checks when copying files.

The tool supports two modes: calculating the hash from an arbitrary text and from the contents of the file, for example, to compare the checksum of the downloaded distribution with the one indicated on the developer's website. All calculations take place locally in the browser: neither text nor file is transferred to the server, which makes the tool safe for working with sensitive data.