Hash Generator — what it does
Computes MD5, SHA-1, SHA-256 and SHA-512 hashes of any text in your browser — for verifying file checksums, generating comparison keys and checking whether two contents really are identical. Runs entirely on-device: paste a config with credentials or a customer export, and it still never leaves your machine.
How to use Hash Generator
- Paste the text (or use File Hash for whole files — streaming, for large inputs).
- Choose the algorithm: SHA-256 for modern verification, SHA-512 when you want the margin, MD5/SHA-1 only for legacy comparison.
- The digest appears instantly in hex; copy it for your checksum line or integrity record.
- To verify a download, compare against the vendor's published digest — or use Hash Comparison for a clear equal/not-equal call.
- Change one character and re-run: the entire digest changes, which is how you demonstrably altered content.
Worked example: verifying a config moved between environments
Production's appsettings.json must match the version you staged. Hash both copies here (SHA-256) and compare: identical digests prove byte-identical content, so deployment approval can cite the hash instead of "I eyeballed it".
At a glance
| Input | Any text, any length |
|---|---|
| Output | Hex digest for MD5, SHA-1, SHA-256, SHA-512 |
| Where it runs | WebCrypto in your browser — no upload |
| Related tools | File Hash for files; Hash Comparison for equality checks |
| Offline | Yes |
Frequently asked questions
- What is Hash Generator?
- Generate MD5, SHA-1, SHA-256 and SHA-512 hashes in your browser.
- Is Hash Generator free to use?
- Yes — Hash Generator is free to use, with no sign-up, no install and no account.
- Does Hash Generator upload or store my data?
- No — Hash Generator runs entirely in your browser, so your text, files and results never leave your device.
- Do I need to install anything to use Hash Generator?
- No — it works in any modern browser (Chrome, Edge, Firefox, Safari) with no downloads, accounts or plugins.
- Is MD5 safe?
- Not for security — MD5 collisions are practical, so it must never protect anything. It remains acceptable for non-adversarial checksums where a legacy system demands it. New work should use SHA-256.
- Why do hashes differ between this tool and my Linux shell?
- Mostly a trailing newline your editor added and the shell's echo appended. Hash the exact bytes (heredoc or printf) and digests agree; this is the number-one "the hash is wrong" support question.
- Can I hash a file here?
- This tool is for text; use the File Hash (SHA-256) tool for whole files — same engines, streaming input, big-file friendly.