Dev Blog

Resize with Imagemagick

Using Imagemagick's convert tool, you can resize an image but Imagemagick does interpolation so the resulting image can look pretty bad.

For example, using the input (animated) gif:

And issuing the command to resize it by a factor of 4:

$ convert tree_anim_inp.gif -resize 400% tree_anim_ugly.gif

produces the interpolated (and ugly) picture:

Instead, use the scale command:

$ convert tree_anim_inp.gif -scale 400% tree_anim_out.gif

Reference

• ImageMagick resize without interpolation

Saving animated GIFs in Gimp

Save as a .gif file extension. When exporting, there will be an option to save as an animation:

Check it and you should have an animated GIF.

2015-10-27