Post OnceBy hand
- Download the video, open each app, upload it again and paste the caption.
- Free, but you repeat it for every account on every post.
- Posts go out late or not at all on busy weeks.
Auto cross posting
Post to all social media at once, automatically
Keep posting on Instagram, Facebook, Threads or X as usual. Post Once picks up each new post and reposts it to your other accounts, with its caption, then saves a copy to your own cloud storage.
Three ways to post everywhere
A scheduling app
- A scheduling app like Buffer, Later or Hootsuite publishes your post to every account through its API, your main account included. With Post Once you post on your main account yourself, in its own app, and only the reposts go out through Post Once.
- Good when you plan a calendar of posts ahead.
- More than you need if you only want each post copied to your other accounts.
Post Once
- You post on your main account, in its own app. Post Once reposts it.
- Your main post keeps what only the native app gives it: trending audio, in-app effects and templates.
- Set it up once. Every post is also saved to cloud storage you own.
What it works with
- Source accounts
- Instagram, Facebook, Threads and X
- Reposts to
- YouTube, Instagram, Facebook Pages, Threads, X and LinkedIn
- Backs up to
- Google Drive, Dropbox, Backblaze B2, and Amazon S3 or any S3-compatible storage
What changes when a post crosses over
Each platform sets its own limits, so one post cannot go everywhere unchanged. These are the limits the platforms state themselves, checked on 23 October 2026.
| Platform | Limit | Source |
|---|---|---|
| Threads |
| Meta Threads API overview |
| YouTube Shorts |
| YouTube Help: Shorts |
| X |
| X API: manage posts |
| Meta Instagram content publishing |
Up to 2 hours and 4K. Videos over 3 minutes, or horizontal ones, go to YouTube, Facebook and LinkedIn, which take long videos.
Set it up in minutes
- 1
Connect the account you already post on. This is your source account.
- 2
Pick the accounts Post Once should repost to, and where to back up.
- 3
Keep posting on your source account as usual. Post Once reposts each new post with its caption and saves a copy to your storage.
Common questions
Posting to many accounts at once. Anything else, write to [email protected].
Can I post to all social media at once for free?
Yes. The Free plan gives you 10 reposts and 10 backups with every feature on and no card. See pricing for the paid plans.
Do I post from Post Once?
No. You post on your own account in its own app, as usual. Post Once reposts each new post to your other accounts.
Which platforms does it work with?
Source accounts: Instagram, Facebook, Threads and X. Reposts to: YouTube, Instagram, Facebook Pages, Threads, X and LinkedIn.
How is this different from Buffer or Hootsuite?
A scheduling app like Buffer, Later or Hootsuite publishes your post to every account through its API, your main account included. With Post Once you post on your main account yourself, in its own app, and only the reposts go out through Post Once. For a longer take, read why scheduling apps can hurt the reach of your main account.
Will my long videos go to every platform?
Up to 2 hours and 4K. Videos over 3 minutes, or horizontal ones, go to YouTube, Facebook and LinkedIn, which take long videos.
Does it repost text-only posts?
Text-only posts are not reposted. A post needs a video or a photo. It is not a scheduler. You do not write, upload or schedule posts in Post Once.
Is there a Repurpose.io alternative?
Yes. Post Once is a Repurpose.io alternative that reposts within minutes, from $9 a month. The comparison also says where Repurpose.io is the better pick.
Try it on your next post.
Keep posting as usual. Post Once reposts it everywhere else and backs it up.