GIF loop count changer
For permanent links you can use: https://ezgif.com/loop-count?url=https://example.com/source-image.gif
Online GIF loop editor
This tool lets you change animated GIF loop flag. You can use it to add or remove endless loop from animated GIF.
GIF animations can be set to loop (repeat the animation) forever, or for any number of predefined times.
It also supports animated PNG (APNG), animated WebP, MNG and FLIF files.