# brianium/watermarkjs

:rice_scene: Watermarking for the browser

Repository: https://github.com/brianium/watermarkjs
Canonical: https://ross.abutalabs.com/products/watermarkjs
Homepage: http://brianium.github.io/watermarkjs/
Language: JavaScript
License: NOASSERTION
License Family: other
Topics: watermark-image, functional, javascript
Archived: true
Last push: 2020-09-29T07:51:08+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4146, "days_push": 2164, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1732, forks 222 (observed 2026-08-28T04:05:28.861668+00:00)

## What it is
A functional JavaScript library for watermarking images entirely in the browser using canvas. It supports compositing images and text onto photos loaded from URLs, file inputs, blobs, or on-page images.

## Use cases
- add a logo watermark to photos in the browser
- overlay text on uploaded images client-side
- watermark images before uploading to S3
- composite two images with alpha transparency
- watermark images without server-side image libraries

## When to choose
- you need client-side watermarking without server image processing
- you want a small functional library for browser canvas image compositing
- your hosting environment lacks server-side image libraries

## When to avoid
- you need server-side or Node.js image watermarking
- you need advanced image editing beyond watermarking
- you need a library with recent active maintenance

## Facets
- artifact type: library
- maturity: maintenance
- function: image-processing
- domain: image-processing, web-development, frontend
- platform: browser
- tags: watermarking, canvas, client-side, es6, functional, web-server

## Member repositories
- brianium/watermarkjs (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:28.861668+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 2026-08-30T03:31:30.166244+00:00, confidence not recorded.
  - readme: https://github.com/brianium/watermarkjs (fetched 2026-08-28T04:05:28.861668+00:00, sha 8e2d5c4606aa)
  - homepage: http://brianium.github.io/watermarkjs/ (fetched 2026-08-29T11:08:33.998806+00:00, sha a5ff7b5f82c5)
  - registry_npm: https://registry.npmjs.org/watermarkjs (fetched 2026-08-29T11:08:34.007873+00:00, sha afd94ffdd009)
- Data as of 2026-08-30T08:39:29.467469+00:00.