Greasy Fork is available in English.
Download images, GIFs, videos, and voice messages on the Telegram webapp from private channels that disable downloading and restrict saving content
< Opiniones de Telegram Media Downloader
Sorry it only is broken for telegram k,
this may or may not be helpful but from what I recall,
telegram.org/k and telegramk.org/ do not work
telegram.org/a initially did not work for me, so then I typed in telegrama.org/. (substituted k to an a into the telegram part), and then download option appeared.
Script is broken, cannot see download button, I was able to download from same private channel 2 days ago. developer mode is enabled and everything appears set up correctly. Please help.