The very simple app I have created allows you to generate a countdown timer animated gif depending on the URL parameters you provide. View demo. Now no longer maintained.

• time* - Date & time when your countdown will end [e.g. 2016-06-24T20:35]
• frames - number of frames (also number of seconds) the countdown will run before looping [defaults to 30]
• width - width in pixels [defaults to 200]
• height - height in pixels [defaults to 200]
• bg - hex colour code for the background [defaults to 000000]
• color - hex colour code for the text [defaults to ffffff]
• name - filename used for the generated gif [defaults to 'default']

These trigger a download. Change the URL from /generate to /serve when used in an image tag.

• Basic: /generate?time=2018-09-24T20:35
• Custom dimensions: /generate?time=2018-09-24T20:35&width=300&height=150
• Custom colours: /generate?time=2018-09-24T20:35&bg=028900&color=adff00
• Custom name & frames: /generate?time=2018-09-24T20:35&name=awesome-gif&frames=20

Tested with and designed for:

• node 6.0.0
• cairo 1.8.6

MIT