Here is how to autopost from Instagram to Pinterest, so that every time you post on Instagram, the post gets automatically posted on Pinterest (and any other social networks you select).
Using OneUp, you first connect your Instagram account and Pinterest account (and any other social network you want to autopost to):

Then choose “Cross-posting” from the Create A Post dropdown options:

Then choose Instagram as the “Post from” account, and choose Pinterest (and any other social network you want) as the “Post To” account:

That’s it! Now moving forward, whenever you post on Instagram, it will automatically post to your Pinterest account with 2 hours of the original post.
Or you can optionally choose to add a delay so that it doesnt post to Pinterest until after a few hours or days.
Here is a video showing how the autoposting process works in OneUp:
FAQ
Does this work with both image posts and video posts?
Yes, OneUp’s cross-posting works with both image and video posts.
If I add music to my Instagram post, will that music also be added to the Pinterest post?
Yes, it will post the video with the music to Pinterest.
If someone adds me as a collaborator on an Instagram post, will that collab post get cross-posted to my Pinterest accounts?
Yes, as long as your Instagram account is linked to a Facebook Page (this is due to limitations from Meta’s API), any collab posts that add your Instagram account as a collab will get cross-posted to your Pinterest accounts – even if you are not the original creator of the post 🤓
So this works even if I post to the Instagram account from the Instagram mobile app?
Yes, this works regardless of whether you post to Instagram from the Instagram mobile app, from Instagram.com, or from a scheduling tool.
Does this work for autoposting from Instagram to multiple different Pinterest accounts at the same time?
Yes, OneUp’s crossposting feature allows you to autopost from Instagram to multiple Pinterest accounts at the same time.
