An example of downloading and combining images in Go.

• Downloads two images of unknown filetype and size.
• Resizes them to the same height.
• Combines them into a single image.
• Saves them as a PNG.

• Combine more than two images.
• Error handling.
• Concurrency.

After installing Go and setting up your GOPATH, clone this repository and install the dependencies:

$ go get github.com/nfnt/resize

Now you are ready to run the example with go run example.go

• net/http to download images.
• resize for resizing.
• image/draw for combining images. You can learn more about how that works here.
• image, image/jpeg, image/png and image/gif for image import and export.