Stuart Langridge@scottjenson now, the experience on my phone (Android 7) isn't perfect, but it seems reasonable:
long-press on image in web browser, say Download image
Open Photo Editor app, which opens the Recent Files list, in which saved image is the most recent
Edit photo as required and hit Save
Open Twitter (I use the PWA) and hit new tweet, image icon
choose "documents" (not "camera" from the popup)
choose Recent
edited image is the most recent; pick it, and it's included in the tweet.
Seems OK to me?
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