One draft can go out as a Reel on Instagram and a text post on Threads. You don't need to build the post twice.
Why some formats looked greyed out
When you pick more than one network, the format row shows only the formats every selected network can publish. Add Threads to an Instagram post and Story and Reel grey out, because Threads doesn't have them.
Greyed formats stay on screen rather than disappearing, and each one tells you which network it needs - for example Story - Instagram only. That way you can see what you'd get back by dropping a network, instead of watching options vanish.
That shared format is the starting point. Each network can now go its own way.
Set a different format per network
- In Media, pick the format you want most networks to use. This is the Main format.
- Above the format row, click the tab for a network - Instagram or Threads.
- The format row now shows everything that network can publish. Pick one.
- That network is marked Custom, and a dot appears on its tab. Reset to main puts it back.
Back on Main, a line under the format row summarises the differences, like Threads → Image.
Set different media per network
Media works the same way as format. Above the format row, next to a network's tab, turn on Use different media for [network] to give that network its own photo or video instead of the shared one.
Once it's on, you get the same three ways to add media as the shared uploader: Upload a file, pick from your Library of previously uploaded assets, or search Stock photos. Turn the toggle off and the network goes back to using the same media as every other selected network.
When we pick a format for you
If a network can't publish the Main format but something close works, we switch it and say so:
Threads will post this as an Image - it has no Story.
That network is marked Auto. It's a suggestion, not a decision - open the network's tab and pick something else if you'd rather.
When there's no way to make it work
A Text post has no photo or video, and Instagram can't publish without one. There's nothing to fall back to, so we stop and ask you to choose:
- Add media for Instagram - the post becomes an image post everywhere.
- Remove Instagram from this post - Threads gets the text post on its own.
We never drop a network for you.
What each network can publish
| Format | Threads | ||
|---|---|---|---|
| Image | Yes | Yes | Yes |
| Carousel | Yes (up to 10) | Yes (up to 20) | Yes |
| Reel | Yes | - | Yes |
| Video | - | Yes | Yes |
| Story | Yes | - | Yes |
| Text | - | Yes | Yes |
Threads has no Stories or Reels, and Instagram has no text-only posts. These are limits of the networks themselves, not settings you can turn on.
Facebook Pages support every format Flomixy offers, so adding Facebook to a post never greys anything out for the other networks - it always has a matching format for whatever you picked as Main.
TikTok media limits
TikTok has its own rules, separate from the format table above:
- Photos: JPEG, PNG or WebP, up to 20 MB each, up to 35 images per post. We recommend a 9:16 aspect ratio.
- Videos: MP4 or MOV, up to 100 MB, up to 10 minutes. WebM isn't supported yet.
- Captions: a video caption can be up to 2,200 characters. On a photo post, the first line becomes the title (up to 90 characters) and the rest becomes the description (up to 4,000 characters).
TikTok review status
TikTok's review of our app is still in progress. Until it's approved, posts you publish through Flomixy go to TikTok as "Only me" - visible only to your own account - no matter which privacy option you pick in the composer. We show the privacy setting you'll get before you publish, so there are no surprises. The 5-posts-per-24-hours cap that applies to apps under review also still applies. We'll update this article the moment the review is approved and these limits lift.
After you publish to TikTok
TikTok can take a few minutes to finish processing a new post before it shows up on your profile. If you don't see it right away after publishing, that's expected - check back shortly, or open the post in Flomixy to see its status.