Home › Programmer & Developer Tools › Hash Generator (MD5, SHA-256…)

Hash Generator (MD5, SHA-256…)

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes of any text or file — all four at once — and verify a download against its published checksum. The SHA family uses the browser’s Web Crypto API; nothing ever leaves your device.

How to use Hash Generator (MD5, SHA-256…)

  1. Type or paste text (hashed live as UTF-8), or click "Hash a file" to checksum a download.
  2. Copy any of the four digests — the selected algorithm is highlighted.
  3. To verify a checksum, paste the expected hash below: the tool tells you which algorithm it matches.

Frequently asked questions

Is my text or file uploaded to a server?
No — hashing runs entirely in your browser via the Web Crypto API (and a built-in MD5 implementation), so the data never leaves your device.
Which algorithm should I use?
SHA-256 is the safe default. MD5 and SHA-1 are cryptographically broken — fine for legacy checksums and cache keys, but never for passwords or signatures.
How do I verify a downloaded file’s checksum?
Click "Hash a file", pick the download, then paste the checksum from the website into the compare field — the tool confirms a match and names the algorithm.
Why is there no MD5 in the Web Crypto API?
Browsers dropped MD5 from crypto.subtle because it is insecure. This tool includes a small RFC 1321 implementation for legacy compatibility instead.

More Programmer & Developer Tools

  • JSON Validator — Validate, parse, and prettify JSON — load it from a URL or curl command, or convert a Python dict (single quotes, True/False/None) to JSON. Identifies syntax errors with precise line number reporting.
  • Code Beautifier — Automatically format your JavaScript, CSS, and HTML with customizable indentation and style rules.
  • Minifier — Reduce bundle sizes by removing whitespace, comments, and optimizing code structure for production.
  • SQL Formatter & Beautifier — Pretty-print and indent SQL queries across dialects (PostgreSQL, MySQL, T-SQL, BigQuery, and more) with configurable keyword casing.
  • XML Formatter — Beautify and validate XML with configurable indentation, or minify it to the smallest valid output — entirely in your browser.
  • JSON Diff — Compare two JSON objects (or Python dicts) structurally to spot added, removed, and changed keys — or switch to line and word mode for plain text and code.
  • RegEx Tester — Build and test regular expressions in real-time with syntax highlighting and match group visualization.
  • Base64 Converter — Quickly encode and decode strings or files to Base64 format for safe data transmission.