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These apps do exactly that, but are not easy to find from the F-Droid app (I had to use a search engine to find the first one): https://f-droid.org/packages/mo

These apps do exactly that, but are not easy to find from the F-Droid app (I had to use a search engine to find the first one): https://f-droid.org/packages/mobi.omegacentauri.SendReduced https://f-droid.org/packages/mobi.omegacentauri.SendReduced https://f-droid.org/packages/com.caydey.ffshare https://f-droid.org/packages/com.caydey.ffshare Oh, and also, specifically for PNG optimization: https://f-droid.org/packages/com.wrmndfzzy.atomize https://f-droid.org/packages/com.wrmndfzzy.atomize

tentacleuno 1y ago
Obligatory mention: ImagePipe[0]. It lets you compress pictures and edit them. You can share images to ImagePipe and it automatically shows a dialog to share compressed versions with another app (hence the "Pipe" -- it's a pipeline!) [0]: https://f-droid.org/en/packages/de.kaffeemitkoffein.imagepipe/ https://f-droid.org/en/packages/de.kaffeemitkoffein.imagepip...
FrequentLurker 1y ago
Here is another one: https://f-droid.org/en/packages/ru.tech.imageresizershrinker/ https://f-droid.org/en/packages/ru.tech.imageresizershrinker... It also has a bunch of other features