Hash Generator

Generate MD5, SHA1, SHA256, SHA512, BLAKE2b, BLAKE2s hashes for text and files. Also verify hash integrity.

1.0.0
Version
Auth
Batch

About Hash Generator

You download a release binary from GitHub, a Linux ISO from a mirror, or a vendor's software installer. The download page lists a SHA-256 checksum next to the file. To verify you got the bytes the publisher intended — and not a corrupted mirror, a transit error or a tampered package — you need to compute the hash of your local copy and compare. On the command line it's a one-liner; if you don't want to remember whether to type sha256sum, PowerShell's Get-FileHash or shasum -a 256, an online calculator does the same job.

This tool computes six common cryptographic hashes in a single pass — MD5, SHA-1, SHA-256, SHA-512, BLAKE2b and BLAKE2s — for either text input or a file up to 50 MB. A separate Verify mode takes an expected hash and tells you whether your input matches, so you can confirm a download in one click instead of eyeballing 64-character hex strings. All six algorithms are implemented via Python's hashlib, so output is byte-identical to what sha256sum or PowerShell's Get-FileHash produces.

Use it to verify downloaded software, generate fingerprints for deduplication, produce content hashes for blockchain or merkle-tree work, hash test vectors against an HMAC implementation, or just compare two strings without writing code. Files are processed in a stateless serverless function and discarded after the response — for highly confidential payloads (passwords, private keys, unreleased source), prefer the OS-native command or a fully in-browser tool.

Hash Generator Use Cases

  • Verifying downloaded ISO images and software installers against publisher checksums
  • Generating SHA-256 fingerprints of files for deduplication or content addressing
  • Producing test-vector hashes when developing an HMAC or signing implementation
  • Hashing release artifacts before pushing to a container registry or CDN
  • Confirming files transferred over an unreliable network arrived without corruption
  • Comparing text snippets when whitespace or encoding makes a visual diff unreliable
  • Auditing build outputs by hashing artifacts against a previous reference

Hash Generator Features

  • Six algorithms in one click: MD5, SHA-1, SHA-256, SHA-512, BLAKE2b and BLAKE2s
  • Hash either text input or upload a file up to 50 MB — same output as command-line sha256sum
  • Dedicated Verify mode — provide an expected hash and the tool returns a match / no match badge
  • Built on Python's hashlib standard library; output is byte-identical to OS-native tools
  • Multi-select algorithm checkboxes — compute only the digests you actually need
  • Modern BLAKE2 family supported alongside the classic MD and SHA algorithms
  • Files processed in a stateless function and discarded after response — see FAQ on confidentiality

How to Use Hash Generator

Enter text or pick a file

Type or paste text into the input area, or click Upload to choose a local file up to 50 MB. Either source works for any algorithm.

Tick the algorithms you want

Default checks MD5, SHA-1, SHA-256 and SHA-512. Tick BLAKE2b or BLAKE2s if you need the modern alternatives. Untick anything you don't need to keep the output tidy.

Click Generate Hash

All ticked algorithms run in one pass. Results appear as one row per algorithm — copy any value with the icon next to it.

Or switch to Verify mode

Change the action selector to Verify, paste the expected hash, pick the algorithm it was computed with and submit. The tool returns a clear match / no match result.

Cross-check against your OS

For defence-in-depth, re-run the same algorithm locally — sha256sum on Linux, Get-FileHash on PowerShell, shasum -a 256 on macOS — and confirm both values agree.

Hash Generator FAQ

Both text and file inputs are sent to a stateless serverless function which computes the hash and returns the result. Nothing is logged or persisted beyond the request. For highly confidential content (passwords, private keys, unreleased source code), prefer a local command — sha256sum on Linux, Get-FileHash on PowerShell, shasum -a 256 on macOS — or a fully in-browser tool that uses Web Crypto API and never leaves your device.

For verifying downloads and general file fingerprinting, SHA-256 is the modern default — fast enough and no known practical collisions. SHA-512 if you want extra margin. BLAKE2b is faster than SHA-256 on most CPUs and equally secure. MD5 and SHA-1 are still useful for non-security checksums but are broken for security purposes — don't use them to verify signatures or store password hashes.

Three common causes: (1) you computed the wrong algorithm — check whether the publisher posted SHA-256 versus SHA-1; (2) whitespace crept into your text input (extra newline, trailing space); (3) the file itself was modified or corrupted in transit. Recompute with this tool and your OS's native command — if they agree but disagree with the publisher's value, the download is the problem.

Up to 50 MB through this tool. For larger files, prefer the OS-native command — sha256sum (Linux), Get-FileHash (Windows PowerShell), shasum -a 256 (macOS). Those have no practical size limit and run faster than uploading over the network.

Yes, for non-security purposes. MD5 is broken against intentional collision attacks (so it can't prove a file wasn't tampered with by an adversary), but it remains useful for unintentional corruption detection, content deduplication and as a quick fingerprint where speed matters more than security. Many vendors still publish MD5 alongside SHA-256 for the same file.

BLAKE2b is optimised for 64-bit platforms and produces a 512-bit (64-byte) digest by default. BLAKE2s is optimised for 32-bit platforms and produces a 256-bit (32-byte) digest. Both are faster than SHA-256 on modern hardware while providing equivalent security. Pick BLAKE2b for servers and desktops, BLAKE2s for embedded or 32-bit systems.

Yes. This tool uses Python's hashlib, which produces byte-identical output to sha256sum (Linux), Get-FileHash (PowerShell) and shasum -a 256 (macOS) given the same input. One gotcha: text in the input box is encoded as UTF-8 — if your file has a different encoding or a BOM, the bytes being hashed will differ from a manual command that handles encoding differently.

Enter text to hash, or upload a file below
Max 50MB, any file type
Verify Hash

Hash Generator Tutorial

What is a Hash?

A hash function converts data (text or file) into a fixed-size string of characters. It's a one-way function — you cannot reverse a hash back to the original data. Common uses include verifying file integrity, password storage, and data fingerprinting.

Common Use Cases

  • File verification: Check if a downloaded file is corrupted by comparing its hash
  • Password security: Websites store hashed passwords instead of plain text
  • Data integrity: Detect if a file has been modified
  • Duplicate detection: Identify identical files by comparing hashes

Algorithm Comparison

AlgorithmOutput LengthSpeedBest For
MD532 charsFastQuick checksums (not for security)
SHA-140 charsFastLegacy systems (deprecated for security)
SHA-25664 charsMediumGeneral purpose, file verification
SHA-512128 charsMediumHigh-security applications
BLAKE2b128 charsFastModern, faster than SHA-3
BLAKE2s64 charsFastLightweight, 32-bit platforms