How to make a gif infinitely repeat?

Question

gif

Hello. I have 100 gifs, but they don't play anymore when they finish playing.
You need a generator in which you upload a lot of gifs en masse, tick the infinite loop checkbox (endless playback) and also massively download the corrected versions.
There is a service https://ezgif.com/effects , but there you upload one at a time, and I have a lot of them.
And this service gifmaker.me cuts dumb - does not make square

Answer 1

imagemagick
and looping through OS tools
or like this:

convert *.gif -loop 0 -set filename:f '%t_loop.%e' +adjoin '%[filename:f]'