Crypto Hash Generator
Compute SHA-256, SHA-384, SHA-512, SHA-1 and MD5 hashes right in the browser.
Generate SHA-256, SHA-512 and MD5 Hashes in Your Browser
A cryptographic hash reduces any input to a fixed-length fingerprint. The same input always produces the same digest, a one-character change produces a completely different one, and the function cannot practically be run backwards. That combination makes hashes the standard tool for verifying file integrity, deduplicating content and comparing values without revealing them.
The SHA family here is computed by crypto.subtle.digest() — your browser’s native, audited implementation — so results match any standards-compliant tool byte for byte. MD5 is supplied separately because Web Crypto deliberately omits it; it is included for verifying legacy checksums only, not for security.
Key features
- Five algorithms — SHA-256, SHA-384, SHA-512, SHA-1 and MD5, all computed simultaneously.
- Text and file input — hash a string, or drop in a file of any size to verify a download checksum.
- Native implementation — SHA digests come from the browser’s own Web Crypto engine.
- Checksum comparison — paste an expected hash and the tool confirms or rejects the match for you.
This tool runs entirely inside your browser using native Web APIs. Your files and text are never uploaded to a server, never logged and never shared with third parties.
How to use: Crypto Hash Generator
- Choose text or file mode
Switch modes at the top of the tool depending on what you need to hash. - Provide the input
Type or paste your text, or drop in the file you want to fingerprint. Large files are read in chunks. - Read the digests
All five hashes appear at once in lowercase hexadecimal, each with its own copy button. - Verify against an expected value
Paste a published checksum into the comparison field to confirm a download has not been altered or corrupted.
Technical specifications
| Processing location | Entirely in your browser — no server round trip |
|---|---|
| Data uploaded | None. Files and text never leave your device |
| Price | Free — no account, no trial, no usage cap |
| Category | Security |
| Works offline | Yes, once the page has loaded |
| Browser support | Chrome 90+, Edge 90+, Firefox 90+, Safari 15+ |
| Interface languages | English, 中文, हिन्दी, Español, العربية |
Frequently asked questions
Is MD5 still safe to use?
Not for anything security related. Practical collision attacks against MD5 have existed since 2004 — two different files can be crafted to share a digest. It remains acceptable only for non-adversarial integrity checks and for verifying legacy checksums. Use SHA-256 for everything else.
Can a hash be reversed to recover the original input?
Not by computation — hash functions are one-way. Short or common inputs can still be recovered by brute force or rainbow table lookup, which is why passwords must be hashed with a slow, salted function like bcrypt or Argon2 rather than a bare SHA digest.
Which SHA variant should I choose?
SHA-256 is the right default: fast, universally supported and with no known practical weakness. SHA-512 is often faster on 64-bit hardware and gives a longer digest. Avoid SHA-1 for new work — it is deprecated and collision attacks are public.
Are my files uploaded to compute the hash?
No. Files are read locally with the FileReader API and hashed by your browser’s own crypto engine. This is exactly why the tool can hash a multi-gigabyte ISO without any upload wait.