lessons

What is a lesson?

Setup

Develop

Tips

Format thumbnails

To format the thumbnails, we use image magick.

The thumbnails should be colorful and attract the visitor attention.

Format JPG

$> convert <IMAGE TO CONVERT> -resize x128 -gravity center -crop 128x128+0+0 +repage -strip thumbnail-128x128.jpg
$> convert <IMAGE TO CONVERT> -resize x256 -gravity center -crop 256x256+0+0 +repage -strip thumbnail-256x256.jpg

Format GIF (How do I capture a GIF?)

$> convert <IMAGE TO CONVERT> -resize x128 -crop 128x128+0+0 +repage -strip -deconstruct -coalesce thumbnail-128x128.gif
$> convert <IMAGE TO CONVERT> -resize x256 -crop 256x256+0+0 +repage -strip -deconstruct -coalesce thumbnail-256x256.gif

Capture GIF

On mac, we recommend GIPHY CAPTURE, which is free and easy to use.