Hash Generator — SHA-256, SHA-512, MD5 & More
Generate cryptographic hashes from text or files using Web Crypto API.
How It Works
- 1Type or paste your text into the input area.
- 2MD5, SHA-1, SHA-256, and SHA-512 hashes are computed automatically.
- 3Copy any hash with one click.
About Hash Generator
Cryptographic hashes are one-way functions that produce a fixed-length fingerprint of any input data. They are fundamental to data integrity verification, password storage, digital signatures, and blockchain technology. This tool generates hashes using four widely used algorithms: SHA-1 and SHA-256 (the most common for checksums and general use), SHA-512 (maximum security), and MD5 (legacy compatibility and quick checksums). SHA-1, SHA-256, and SHA-512 are computed using the browser's native Web Crypto API for maximum performance, while MD5 uses the js-md5 library. You can hash text input directly or upload files to compute their checksum. File hashing is particularly useful for verifying software downloads — compare the hash against the one published by the developer to confirm the file has not been tampered with or corrupted during download. Other common use cases include generating content fingerprints for deduplication, creating deterministic identifiers from strings, and verifying data integrity after transfer.
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Frequently Asked Questions
Is my data sent to a server?
No. SHA hashes are computed using the Web Crypto API and MD5 using the js-md5 library — both run entirely in your browser.
Which hash algorithm should I use?
SHA-256 is the most widely used for checksums and data integrity. SHA-512 provides more security. MD5 and SHA-1 are considered cryptographically broken and should only be used for non-security purposes like checksums.
Can I verify a downloaded file's checksum here?
Yes. Paste or drop the file into the input area, pick the algorithm the publisher specified (usually SHA-256), and compare the resulting hash against their published value. Matching hashes mean the file was not tampered with in transit.
Is my file uploaded to a server?
No. Transmute processes everything locally in your browser using JavaScript and the Canvas API. Your files never leave your device — there is no server, no upload, no cloud processing.
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