What is the Hash Generator?
A hash generator computes a fixed-size cryptographic fingerprint from any text or file. This tool runs five algorithms (MD5, SHA-1, SHA-256, SHA-384, SHA-512) plus HMAC for authenticated hashes. The SHA-2 family uses the browser's native Web Crypto API for speed; MD5 ships as a pure-JS implementation since Web Crypto doesn't include it.
Most online hash tools support 1-2 algorithms and ship single-input mode. We support five algorithms side-by-side, file hashing, HMAC signing, and side-by-side hash comparison. Browser-only, no upload, no signup.
How it works
Features
Why this generator
Most generators show one algorithm at a time. We show all five so you can pick after seeing what you get.
JWT signing, API request signing, webhook verification. Most free tools skip HMAC entirely.
Some online hashers refuse files larger than a few MB. We handle ~100MB locally with no upload.
Input often includes secrets (HMAC keys, sensitive payloads). We never see them. md5hashgenerator.com sends inputs to their server.
Who uses it
Real use cases
- You downloaded an Ubuntu ISO and need to verify the SHA-256 matches Canonical's published hash. Drop the file, copy the SHA-256, paste the published hash into compare. Match in green = file is intact.
- You're debugging a webhook signature mismatch. Compute HMAC-SHA-256 with your shared secret + the request payload, compare to the X-Signature header you received.
- You need to compute a JWT signature manually for testing. Use HMAC-SHA-256 with your secret + 'header.payload' as the message. Output is the signature segment.
- You're caching expensive API responses by content hash. Run SHA-256 on the request URL + body, use the hex digest as the cache key.
- You're explaining what hash collisions are. Show MD5 of two different inputs that happen to collide (the famous executable example), then SHA-256 of the same -different.
- You need to dedupe a folder of images. Hash each file with SHA-256, group by hash, the dupes share a hash.
Compared with other tools
| Feature | Molixa | md5hashgenerator | DenCode | CyberChef |
|---|---|---|---|---|
| Algorithms | 5 + HMAC | MD5 only | 8 | All |
| File hashing | Yes | No | Limited | Yes |
| HMAC | Yes | No | Yes | Yes |
| Side-by-side compare | Yes | No | No | Manual |
| All at once | Yes | Single | Single | Manual |
| Free, no signup | Yes | Ads | Free | Open source |
| Browser-only | Yes | Server | Yes | Yes |
Frequently asked questions
Is the hash generator free?▾
Yes. Unlimited use, no signup, browser-only. md5hashgenerator.com is free but ad-supported and ships single algorithms; we ship five plus HMAC and file hashing.
Which algorithms are supported?▾
Five: MD5, SHA-1, SHA-256, SHA-384, SHA-512. SHA-2 family runs via the browser's Web Crypto API (fast, native). MD5 runs via a pure-JS implementation since Web Crypto doesn't include it.
Should I use MD5 for security?▾
No. MD5 is cryptographically broken -collisions can be generated cheaply. Don't use it for password storage, signatures, or any security-sensitive context. It's still fine for non-security uses like file integrity checksums or cache keys.
Is SHA-1 safe?▾
Not for security. SHACK1 was broken in 2017 (Google's SHAttered attack found a real collision). Migrate any SHA-1 signatures or HMACs to SHA-256 or stronger. SHA-1 is only acceptable for non-security checksums.
What's HMAC?▾
Hash-based Message Authentication Code. Combines a hash function with a secret key to produce an authentication tag. Used in JWT signatures (HS256 = HMAC-SHA-256), API request signing, webhook verification. We support SHA-1 / SHA-256 / SHA-384 / SHA-512 HMAC.
Can I hash a file?▾
Yes. Drop the file, pick the algorithm, get the hex digest. Used for verifying downloaded files match the publisher's checksum, deduplicating files by content, content-addressable storage.
How big a file can I hash?▾
Up to about 100MB depending on browser memory. The whole file gets read into memory before hashing. For multi-GB files, use a streaming CLI tool like `sha256sum`.
Is my input sent to a server?▾
No. All hashing happens via Web Crypto (subtle.digest) or the bundled MD5 implementation. Your text or file bytes never leave the page. Some online hash tools log inputs for analytics; we don't run any server endpoints.
Can I compare two hashes?▾
Yes via the side-by-side view. Useful when downloading software and comparing your computed hash to the publisher's posted hash. Mismatch means the file was tampered with or corrupted in transit.
Why do hashes look different even for the same input?▾
They shouldn't. If they do, check for trailing whitespace, line ending differences (LF vs CRLF), or character encoding (UTF-8 vs Latin-1). The same logical text can have different byte sequences which produce different hashes.
Generate hashes now
5 algorithms, HMAC, file hashing, compare. Free unlimited.
Open the hash generatorThe Hash Generator page is built, reviewed, and maintained by the Molixa team. We use the tool we ship and update the docs when the behavior changes.
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