The very simple app I have created allows you to generate a countdown timer animated gif depending on the URL parameters you provide. View the code.

URL Parameters

* required.

Generate Examples Triggers a download

Serve Examples Display in an image tag

basic example

Basic example

Simple example setting only the date + time.

custom colours

Custom colours

Example setting a custom set of colours.

custom colours

Custom dimensions

Example setting a custom set of dimensions.

Under the hood the app uses: