What account you need
A Professional account (Creator or Business). No business portfolio needed.
- Instagram only lets apps publish for Professional accounts. A personal account has to be switched to Creator or Business first, in the Instagram app.
- Sign in with Instagram itself, or with Facebook if the account already sits in a Meta business portfolio.
What you can post to Instagram
Checked when you upload and when you schedule, not after a post fails.
Reels
MP4 or MOV, up to 1 GB and 10 minutes.
Photos
JPEG, PNG or WebP, up to 8 MB (stored as JPEG). Between 4:5 portrait and 1.91:1 landscape; anything outside is refused rather than cropped.
Caption
Up to 2,200 characters and at most 30 hashtags, counted as you type.
Instagram options in the composer
Below the shared caption, only the options this platform actually asks for.
- Share to feed
- Reels also appear in your profile grid. On unless you turn it off.
- Caption
- The shared caption of the post; there are no other Instagram-only fields.
How connecting works
You sign in on the platform’s own page. reelport.io never sees your password, and its stored logins are encrypted.
- 01
In Channels, choose Instagram. Meta’s sign-in opens.
- 02
Sign in with Facebook and pick the Page your Instagram account is linked to. No business portfolio needed.
- 03
Each account you shared shows up as its own channel. If none appear, check the account is set to Creator or Business.

Your next post to Instagram, on time.
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