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How to Use
- 1Enter or paste your text in the input field.
- 2Choose which algorithms to enable: SHA-1, SHA-256, and/or SHA-512.
- 3Hashes compute automatically as you type — no button click needed.
- 4Use the verify panel to compare an external hash against your generated values.
- 5Click Copy next to any hash to copy it to your clipboard.
About Hash Generator
The Hash Generator computes SHA-1, SHA-256, and SHA-512 hashes from text input using the Web Crypto API (SubtleCrypto). Hashes update in real time as you type, with individual toggles for each algorithm.
A built-in verify panel lets you paste an existing hash to check whether it matches any of the generated outputs. Use this to validate file integrity, confirm password hashes, or verify checksums from download pages.
Developers use hash functions for data integrity verification, content-addressable storage, digital signatures, git commit IDs, and cache-busting URLs. All hashing runs locally in your browser — your input text never leaves your device.
Frequently Asked Questions
What is a cryptographic hash?
A hash is a fixed-length string produced by a one-way function. The same input always produces the same hash, but you cannot reverse a hash back to the original input.
Which hash algorithm should I use?
SHA-256 is the most widely used standard for general purposes. SHA-512 offers a longer output for higher security. SHA-1 is considered legacy and should not be used for security-critical applications.
Can I verify an existing hash?
Yes. Paste a known hash into the verify panel. The tool compares it against all enabled algorithm outputs and tells you if there is a match.
Is my input text sent to a server?
No. All hashing uses the browser's native Web Crypto API. Your text never leaves your device, making it safe for hashing sensitive data like API keys or passwords.
Can two different inputs produce the same hash?
Theoretically yes (called a collision), but for SHA-256 and SHA-512 the probability is so astronomically low that it is considered practically impossible.