The word for that is photogrammetry. With this word you can look up for foss and non foss solutions. Some seem to work really fine.

Librera Reader : https://f-droid.org/packages/com.foobnix.pro.pdf.reader/

Pour moi, en terme de température tu ne gagnes rien : ça ne sert à rien de le faire tourner en ton absence par exemple. Non, ce qui compte c'est l'effet sur la peau qui peut rendre un intérieur à 30°C supportable. Ca brasse aussi l'air plus largement qu'un ventilo sur pied et ça ne traîne pas entre les pattes. J'en ai mis dans pratiquement toutes les pièces de la maison!

I have hope for RedReader. This is my favourite reddit app. And it's foss.

OK, I'm trying not to use amazon as much as possible but are these shopping days actually interesting ?

https://freetubeapp.io/

Pour ma part, en région parisienne les jours où il fait 30 degrés à l'intérieur, les ventilateurs de plafond font un super boulot.

insert 'wow, this is worthless' meme.

Yes, I saw that, but the disappearance of NSFW content for third party apps is still on tracks if I'm not mistaken.

I only played with Prince of Persia One and Two and the trailer really reminds me of episode 2 with a 2D feel. This looks great.

My use is not foss because I didn't find something that fits my needs better than Inoreader. There is the android app which works fine and also a very nice web interface that I can use at work because without thumbnails it looks like a 'boring' list of stuff.

Well, ViMusic uses YouTube Music except that it's free. Available on fdroid.