This single-page utility will give a timer that can be used to assist with the giving of speeches. The background is initially white. It will turn green when the minimum duration has been reached, will turn yellow when halfway between minimum and maximum durations, and will turn red once the maximum has been reached. 30 seconds later the background will blink.
Presentation Clock by Matt Peperell is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.
You are free to use this when practicing or in speaking club meetings.
Though this will work when run from a webserver it is designed to work entirely off-line with no Internet connection necessary.
Instructions for running it on a webserver are intentionally omitted and I do not offer support for doing this.
I wrote this utility as a member of a local ToastMasters International club, but it is written entirely independently by me and is not in any way endorsed by them.