# flozz/StackBlur

Fast and almost Gaussian blur

Repository: https://github.com/flozz/StackBlur
Canonical: https://ross.abutalabs.com/products/stackblur
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2026-06-29T23:34:55+00:00

## Health v2 (maintenance only)
Score: 73/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 90, release rhythm 35, longevity 100
- inputs: {"age_days": 4568, "days_push": 65, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1310, forks 122 (observed 2026-08-28T04:04:19.865651+00:00)

## What it is
StackBlur.js is a JavaScript library implementing the fast, almost-Gaussian StackBlur algorithm for images and canvas elements. It works in browsers via canvas APIs and in Node.js, distributed as the stackblur-canvas npm package.

## Use cases
- blur images in the browser quickly
- apply gaussian-like blur to html canvas
- blur a region of a canvas element
- fast image blur for web apps
- blur image alpha channel in javascript
- node.js image blurring

## When to choose
- you need fast, near-Gaussian blur in the browser or Node without heavy dependencies
- you want to blur only part of a canvas
- you need a small MIT-licensed blur utility

## When to avoid
- you need exact Gaussian blur quality
- you need general image editing beyond blurring
- you work outside JavaScript/browser canvas environments

## Facets
- artifact type: library
- maturity: stable
- function: image-processing, graphics
- domain: image-processing, web-development, frontend
- platform: browser
- tags: blur, gaussian-blur, canvas, stackblur, image-effects, nodejs, javascript

## Member repositories
- flozz/StackBlur (main) score 73

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:19.865651+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 2026-08-30T04:49:54.928107+00:00, confidence not recorded.
  - readme: https://github.com/flozz/StackBlur (fetched 2026-08-28T04:04:19.865651+00:00, sha e532e2bcaca5)
- Data as of 2026-08-30T08:39:29.467469+00:00.