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This SHA256 Generator tool allows you to generate SHA256 and SHA1 hash values from any text. SHA (Secure Hash Algorithm) is a cryptographic hash function that produces a fixed-size output (hash value) from an input. SHA256 generates a 256-bit (32-byte) hash value, while SHA1 generates a 160-bit (20-byte) hash value. These hash values are commonly used for data integrity verification, password storage, and digital signatures. Our online SHA256 SHA1 generator is completely free and works directly in your browser without sending your data to our servers.