# weserv/images

Source code of wsrv.nl (formerly images.weserv.nl), to be used on your own server(s).

Repository: https://github.com/weserv/images
Canonical: https://ross.abutalabs.com/products/images
Homepage: https://wsrv.nl/
Language: C++
License: BSD-3-Clause
License Family: permissive
Topics: nginx, libvips, vips, image-processing, image-manipulation, image-server, docker, bsd-3-clause
Last push: 2026-07-31T13:37:41+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 95, release rhythm 35, longevity 100
- inputs: {"age_days": 4189, "days_push": 33, "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 2755, forks 240 (observed 2026-08-28T04:07:18.145091+00:00)

## What it is
weserv/images is the source code of wsrv.nl, a self-hostable image cache and resize service that manipulates images on-the-fly via URL parameters. It is built on libvips for fast image processing and nginx as web server, forward proxy, and HTTP cache.

## Use cases
- resize images on the fly via url parameters
- self-host an image proxy and cache server
- convert images to webp or other formats on request
- serve optimized images from a cdn-backed cache
- proxy and cache remote images for https websites
- compress images to reduce bandwidth

## When to choose
- you need fast, on-the-fly image resizing and format conversion served over http
- you want to offload image processing from your application servers to a dedicated service
- you need a self-hosted image proxy with built-in caching

## When to avoid
- you only need offline batch image processing without an http service
- you need heavy image editing features like layers or advanced compositing
- you cannot run a Linux server with nginx and libvips

## Facets
- artifact type: service
- maturity: stable
- function: image-processing, http-server, caching, proxy
- domain: image-processing, web-development, self-hosted, media
- platform: self-hosted
- tags: libvips, nginx, image-resize, on-the-fly-image-manipulation, cdn-caching, image-proxy, linux, docker, web-server

## Member repositories
- weserv/images (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:18.145091+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 2026-08-30T08:18:52.147322+00:00, confidence not recorded.
  - readme: https://github.com/weserv/images (fetched 2026-08-28T04:07:18.145091+00:00, sha e251e1e8a7af)
  - homepage: https://wsrv.nl/ (fetched 2026-08-29T09:56:47.144736+00:00, sha 58f68bf4e4cf)
  - site_page: https://wsrv.nl/docs (fetched 2026-08-29T09:56:47.153526+00:00, sha e961e7f1d38c)
  - site_page: https://wsrv.nl/faq (fetched 2026-08-29T09:56:47.155360+00:00, sha 30a6ae5e676c)
- Data as of 2026-08-30T08:39:29.467469+00:00.