# unjs/ipx

🖼️ High performance, secure and easy-to-use image optimizer.

Repository: https://github.com/unjs/ipx
Canonical: https://ross.abutalabs.com/products/ipx
Language: TypeScript
License: MIT
License Family: permissive
Topics: sharp, libvips, image, proxy, cdn, optimize, resize, webp, docker
Last push: 2026-08-26T10:37:16+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 83, longevity 100
- inputs: {"age_days": 3188, "days_push": 7, "days_rel": 36, "gap_med": 32, "n_releases_24m": 8}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2447, forks 91 (observed 2026-08-28T04:06:52.742824+00:00)

## What it is
IPX is a high-performance, secure image optimizer powered by sharp and svgo that serves images in any size, format, and quality via URL modifiers. It can run as a standalone server, be embedded programmatically, or act as a remote image proxy for allowed domains.

## Use cases
- serve resized images on the fly from a directory
- convert images to webp or avif automatically based on browser support
- optimize and proxy remote images through a self-hosted endpoint
- generate multiple image sizes for responsive web pages
- compress images without a build step
- self-host an image CDN

## When to choose
- you need on-the-fly image resizing and format conversion via simple URLs
- you want a self-hosted alternative to cloud image CDNs
- you need secure validation of image modifiers before processing
- you want to embed an image optimizer into a Node.js app

## When to avoid
- you only need one-time batch image conversion offline
- your stack cannot run Node.js or libvips
- you need a fully managed CDN with global edge caching

## Facets
- artifact type: service
- maturity: active
- function: image-processing, http-server, proxy, cli
- domain: image-processing, web-development, media, self-hosted
- platform: self-hosted, cli, cross-platform
- tags: sharp, libvips, image-optimization, cdn, resize, webp, svgo, on-the-fly-image-processing, nodejs, docker

## Member repositories
- unjs/ipx (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:52.742824+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 2026-08-30T02:30:31.584652+00:00, confidence not recorded.
  - readme: https://github.com/unjs/ipx (fetched 2026-08-28T04:06:52.742824+00:00, sha 35819bea7588)
  - registry_npm: https://registry.npmjs.org/ipx (fetched 2026-08-29T10:11:50.462607+00:00, sha 1e728491506c)
- Data as of 2026-08-30T08:39:29.467469+00:00.