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Imagor

Fast, secure image processing server and Go library, using libvips

From cshum·Updated June 12, 2026·View on GitHub·

[![Codecov](https://img.shields.io/codecov/c/github/cshum/imagor )](https://codecov.io/gh/cshum/imagor) The project is written primarily in Go, distributed under the Apache License 2.0 license, first published in 2021. It has gained significant community traction with 3,962 stars and 169 forks on GitHub. Key topics include: avif, crop-image, docker, gif, golang.

Latest release: v1.9.1
May 27, 2026View Changelog →

imagor

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imagor is a fast, secure image processing server and Go library.

imagor uses one of the most efficient image processing libraries,
libvips, with the Go binding vipsgen, which is also available for low-level libvips operations directly in Go. It is typically 4-8x faster than using the quickest ImageMagick settings.
imagor implements libvips streaming to facilitate parallel processing pipelines and achieve high network throughput.
Benchmarks show imagor is one of the fastest image processing servers.

imagor features a ton of image processing use cases, available as a HTTP server with first-class Docker support. It adopts the thumbor URL syntax representing a high-performance drop-in replacement.

imagor is built with speed, security and extensibility in mind. Alongside there is imagorvideo bringing video thumbnail capability through ffmpeg C bindings.

Quick Start

bash
docker run -p 8000:8000 shumc/imagor -imagor-unsafe -imagor-auto-webp

Original images:

https://raw.githubusercontent.com/cshum/imagor/master/testdata/gopher.png
https://raw.githubusercontent.com/cshum/imagor/master/testdata/dancing-banana.gif
https://raw.githubusercontent.com/cshum/imagor/master/testdata/gopher-front.png

<img src="https://raw.githubusercontent.com/cshum/imagor/master/testdata/gopher.png" height="100" /> <img src="https://raw.githubusercontent.com/cshum/imagor/master/testdata/dancing-banana.gif" height="100" /> <img src="https://raw.githubusercontent.com/cshum/imagor/master/testdata/gopher-front.png" height="100" />

Try out the following image URLs:

http://localhost:8000/unsafe/fit-in/200x200/filters:fill(white)/https://raw.githubusercontent.com/cshum/imagor/master/testdata/gopher.png
http://localhost:8000/unsafe/200x200/smart/filters:fill(white):format(jpeg):quality(80)/https://raw.githubusercontent.com/cshum/imagor/master/testdata/gopher.png
http://localhost:8000/unsafe/fit-in/-180x180/10x10/filters:hue(290):saturation(100):fill(yellow)/raw.githubusercontent.com/cshum/imagor/master/testdata/gopher.png
http://localhost:8000/unsafe/30x40:100x150/filters:fill(cyan)/raw.githubusercontent.com/cshum/imagor/master/testdata/dancing-banana.gif
http://localhost:8000/unsafe/fit-in/200x150/filters:fill(yellow):watermark(raw.githubusercontent.com/cshum/imagor/master/testdata/gopher-front.png,repeat,bottom,0,40,40)/raw.githubusercontent.com/cshum/imagor/master/testdata/dancing-banana.gif

<img src="https://raw.githubusercontent.com/cshum/imagor/master/testdata/demo1.jpg" height="100" /> <img src="https://raw.githubusercontent.com/cshum/imagor/master/testdata/demo2.jpg" height="100" /> <img src="https://raw.githubusercontent.com/cshum/imagor/master/testdata/demo4.jpg" height="100" /> <img src="https://raw.githubusercontent.com/cshum/imagor/master/testdata/demo3.gif" height="100" /> <img src="https://raw.githubusercontent.com/cshum/imagor/master/testdata/demo5.gif" height="100" />

[!TIP]
Full documentation at docs.imagor.netImage Endpoint · Filters · Storage · Security · Configuration

Contributors

Showing top 12 contributors by commit count.

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This article is auto-generated from cshum/imagor via the GitHub API.Last fetched: 6/14/2026