Generate MD5, SHA-1, SHA-256 hashes
The MailDrop hash generator computes MD5, SHA-1, SHA-256, and SHA-512 digests of any text you enter, all at once and entirely in your browser. There is no button to press: the four hashes update automatically as you type, so you can watch how even a one-character change produces a completely different digest. The SHA family is computed with the browser's built-in WebCrypto API for speed and correctness.
Hashes are the workhorses of data integrity and software development. You can verify that a downloaded file's published checksum matches, generate cache keys and content identifiers, compare two pieces of text without eyeballing them, or produce test fixtures for code that consumes digests. Having all four common algorithms side by side also makes it easy to identify which algorithm produced an unknown hash by matching its length and format.
Because hashing happens client-side, the text you enter is never uploaded, logged, or stored; sensitive input stays on your device. The tool is free with no registration, part of the same privacy-focused toolkit as MailDrop temporary email.
Enter any text into the input field. It can be a word, a passphrase you are experimenting with, a block of code, or the contents of a file pasted from your editor. There is no length limit that matters in practice.
The MD5, SHA-1, SHA-256, and SHA-512 digests are computed automatically as you type, with no submit button. Every keystroke recalculates all four values instantly, right in your browser.
Use SHA-256 or SHA-512 for anything security-related, and MD5 or SHA-1 only when matching legacy checksums or systems that still require them. All four outputs are standard lowercase hexadecimal.
Copy the hash you need and paste it into your comparison, script, test fixture, or documentation. To verify data integrity, hash the same input in both places and confirm the digests match exactly.
No. All hashing runs client-side in your browser, with the SHA algorithms handled by the WebCrypto API built into modern browsers. Nothing you type is transmitted, stored, or logged, so you can safely hash sensitive strings. Disconnecting from the internet after the page loads does not stop the tool from working.
For new work, use SHA-256 or SHA-512. Both are current, collision-resistant standards suitable for integrity checks and digital signatures. MD5 and SHA-1 are cryptographically broken, meaning attackers can construct different inputs with the same digest, so reserve them for compatibility with older systems and non-security tasks like cache keys.
Not directly. Hash functions are one-way by design, and there is no algorithm that turns a digest back into its input. However, attackers can guess: common passwords and short strings are found in precomputed lookup tables, which is why real systems salt and stretch passwords rather than storing plain hashes.
This is the avalanche effect, a deliberate property of cryptographic hash functions. Flipping a single bit of input flips roughly half the bits of the output, so similar inputs produce unrelated digests. It is what makes hashes reliable for detecting even the smallest corruption or tampering in data.
Developers testing account systems often need digests for fixtures, comparing stored values, or checking what a system does with hashed identifiers. Pair this generator with a MailDrop disposable email inbox and you can exercise complete signup and verification flows, hashes included, without ever putting a personal email address into a test database.