I have a photo collage app that produces a jpg. The user usually wants to share the collage on social media like Facebook or Instagram. Keeping up to date with

I have a photo collage app that produces a jpg. The user usually wants to share the collage on social media like Facebook or Instagram. Keeping up to date with the various APIs is a pain in the ass (and I use ShareKit, a library to aggregate these services), and the user still has to sign in to give credentials to import photos or post to social media. Linking could simplify the exchange of data here, where I could just pass the photo to the relevant app to handle.