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Old 05-22-2020, 05:30 PM   #3
sherman
Guru
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Posts: 856
Karma: 2676800
Join Date: Aug 2008
Location: Taranaki - NZ
Device: Kobo Aura H2O, Kobo Forma
If you want to stick with JavaScript, server sent events could potentially be used, as I know the Kobo browser supports that. Whether you send the image directly to the Kobo by base64 encoding it, or sending update info for the Kobo to fetch an image from a URL is up to you.
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