Greasy Fork is available in English.
Enhance the X(Twitter) user experience by loading images in their original quality and removing ads and spam tweets.
Thank you for your feedback. I also occasionally encounter this issue when using Firefox.
Usually, refreshing the page (F5) once will resolve it. Afterward, I will look into how to solve this problem.
I made some improvements to the script, it should be able to more stably convert images to original quality.
Seems to work fine in Chrome, tho in Firefox the video download button doesn't show up for me.