# blueimp/JavaScript-MD5

JavaScript MD5 implementation. Compatible with server-side environments like node.js, module loaders like RequireJS and all web browsers.

Repository: https://github.com/blueimp/JavaScript-MD5
Canonical: https://ross.abutalabs.com/products/javascript-md5
Homepage: https://blueimp.github.io/JavaScript-MD5/
Language: JavaScript
License: MIT
License Family: permissive
Archived: true
Last push: 2021-09-25T14:53:13+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5380, "days_push": 1803, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4559, forks 1708 (observed 2026-08-28T04:08:53.433708+00:00)

## What it is
A zero-dependency JavaScript implementation of the MD5 hash algorithm, supporting hex-encoded and raw MD5 as well as HMAC-MD5. It works in all web browsers, Node.js, and module loaders like RequireJS and webpack.

## Use cases
- compute md5 hash of a string in javascript
- generate hmac-md5 hash in the browser
- hash strings in node.js without dependencies
- calculate checksums client-side
- md5 hashing for legacy systems

## When to choose
- you need a lightweight, dependency-free MD5 implementation
- you must match MD5 output of an existing legacy system
- you need both browser and Node.js support from one library

## When to avoid
- you need cryptographically secure hashing (use SHA-256 or better)
- you are hashing passwords for storage (use bcrypt/argon2)
- your environment provides a native crypto API

## Facets
- artifact type: library
- maturity: maintenance
- function: cryptography, security
- domain: developer-tools, web-development, security
- platform: browser, cross-platform
- tags: md5, hashing, hmac, zero-dependencies, javascript, nodejs

## Member repositories
- blueimp/JavaScript-MD5 (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:53.433708+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:20:00.987940+00:00, confidence not recorded.
  - readme: https://github.com/blueimp/JavaScript-MD5 (fetched 2026-08-28T04:08:53.433708+00:00, sha 042cd14af225)
  - homepage: https://blueimp.github.io/JavaScript-MD5/ (fetched 2026-08-29T09:05:39.654196+00:00, sha 82720a29edcf)
- Data as of 2026-08-30T08:39:29.467469+00:00.