Radar check
What we found when we opened it. Every bar is one fact, with its date.
Last code pushed 12 Oct 2026, 13 days before this check.
No releases published on GitHub; the code date above is the one to trust.
Public since March 2015, a little over 11 years.
2,850 stars and 249 forks.
22 commits and 11 new issues in the last 90 days.
5 contributors. No pull requests merged in 90 days; changes go in directly. A small team carries it.
A security policy says how to report a problem. No published security advisories.
How the bars are scored
- Alive. Days since the last code push: a week or less 100, a month 90, three months 70, six months 50, a year 30, eighteen months 15, older 0.
- Releases. Age of the latest GitHub release, on a similar scale; no bar when the project publishes no releases.
- Maturity. Age of the project: eight years 100, five 90, three 70, two 55, one 40, six months 25, younger 10.
- Adoption. Stars on a log scale: 100,000 stars is 100, 10,000 is 80, 1,000 is 60, 100 is 40.
- Activity. Commits in the last 90 days: 300 or more 100, 100 85, 30 65, 10 45, any 25.
- Community. People who have contributed: 100 or more 100, 30 80, 10 60, 5 40, 2 25, one 10.
- Security. A published security policy 80, none 40; published advisories are listed, not scored.
Checked by Repo Radar on 26 Oct 2026 from the repository on GitHub.
In simple English
This tool lets you resize, crop and convert images on the fly. You send an image URL with parameters in the web address, and the server returns the processed image. It is designed to run on your own server, so your users get fast pictures without slowing down your main app. It is free to run under an open licence. You need a server to host it and some basic knowledge of Docker.
What it is
This is the open-source software behind wsrv.nl. It combines nginx (a web server) and libvips (a library for fast image manipulation) into a single package.
What it is good for
Solo builders who need to serve responsive images across different devices without paying for a commercial image CDN.
- Processes images very quickly using low memory.
- Accepts simple web URLs to resize and convert images on demand.
- Runs easily inside a Docker container.
- Requires an external server with Docker installed.
- Needs careful firewall setup if exposed directly to the public internet.
- No built-in user interface for managing images.
Paid image processing and CDN services
nginx
- imgproxy/imgproxy11k stars
A fast and secure standalone server for resizing and converting images on the fly written in Go.
- h2non/bimg3.0k stars
A small C library and Go wrapper for fast high-level image processing using libvips.
- iconoir-icons/iconoir4.6k stars
1,671 hand-drawn icons, free for any use, packaged nine different ways.
- libvips/libvips12k stars
Resizes and converts images several times faster and with far less memory than the usual tool.
- ImageMagick/ImageMagick18k stars
Converts, resizes and edits images from one typed command, across more than two hundred formats.
git clone https://github.com/weserv/images.git cd images/docker docker compose up -d