/imageserver

Image server toolkit in Go
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  2. Makefile 0.6%
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Latest commit 8ca66ec Feb 21, 2017 @dotneet dotneet committed with implement disk based cache. (#13)
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cache implement disk based cache. (#13) Feb 21, 2017
examples implement disk based cache. (#13) Feb 21, 2017
graphicsmagick use sub test + Go 1.7 Aug 16, 2016
http add support for int64 param Dec 11, 2016
image use sub test + Go 1.7 Aug 16, 2016
source source/file: fix separator (on Windows) Jan 8, 2017
testdata create "source" package and move "httpsource" package to "source/http" Jun 5, 2016
.gitignore add makefile Dec 11, 2016
.travis.yml update to Go 1.8 Feb 18, 2017
LICENSE small update Mar 1, 2015
Makefile add examples build to makefile Dec 12, 2016
README.md add httpsource example Jun 3, 2016
handler.go update documentation Apr 21, 2016
handler_test.go fix errcheck May 26, 2016
image.go fix typo in doc Jun 12, 2016
image_benchmark_test.go use sub test + Go 1.7 Aug 16, 2016
image_test.go use sub test + Go 1.7 Aug 16, 2016
params.go add support for int64 param Dec 11, 2016
params_benchmark_test.go use classic benchmark instead of parallel Jan 13, 2016
params_test.go add support for int64 param Dec 11, 2016
server.go create "source" package and move "httpsource" package to "source/http" Jun 5, 2016
server_test.go create "source" package and move "httpsource" package to "source/http" Jun 5, 2016

README.md

Image Server

An image server toolkit in Go (Golang)

GoDoc Build Status codecov Go Report Card

Features

Examples

Demos

These demos use the "advanced" example.

Click the images to see the URL parameters.

Resize

Options Result
width=200
(preserve aspect ratio)
height=200
(preserve aspect ratio)
width=200&height=200
(change aspect ratio)
width=200&height=200&mode=fit
(fit in 200x200)
width=200&height=200&mode=fill
(fill 200x200 and crop)

Rotate

Options Result
rotation=90
(counterclockwise)
rotation=45&background=ffaa88
(background)

Crop

Format: min_x,min_y|max_x,max_y

Options Result
crop=556,111|2156,1711
crop=956,511|1756,1311
crop=1252,799|1460,1022

Animated GIF

Original Resized
Animated
Spaceship

Gamma correction (more info)

Original Disabled Enabled
Dalai Gamma
Gray squares
Random
Rings

Resampling

Resampling Rings Large
Nearest neighbor
Box
Linear
Cubic
Lanczos

Quality

JPEG quality Result
5%
10%
50%

Convert (JPEG to GIF)

Backward compatibility

There is no backward compatibility promises. If you want to use it, vendor it. It's always OK to change things to make things better. The API is not 100% correct in the first commit.