Cross-platform publishing
How to post to all social media at once
To post to all social media at once, connect your accounts in Postdom, approve a post, and Postdom sends it to every account you chose, then shows a separate result for each one.
Updated
No card needed. Nothing posts until you approve it.
Post to all social media at once with Postdom
- 01
Connect your accounts
Connect TikTok, Instagram, YouTube and the others you use. Postdom posts to nine platforms.
- 02
Pick or approve the post
Approve a post Postdom made from your website, or send your own finished video through the API.
- 03
Choose the accounts
Select every account the post should go to. Postdom checks each platform's caption and video limits first.
- 04
Check each result
Each account shows its own result. One account can be live while another needs attention.
Free: post to all social media at once
Postdom's Free plan costs nothing and needs no card. It makes 1 post a month from your website, posts to 2 accounts on any platform Postdom supports, and keeps the Postdom watermark.
On Free you can post to both connected accounts at once and see each result.
When you want more, Starter is $39 a month for 30 posts, about $1.30 a post. A post is any format and only counts when you approve or schedule it.
Post to multiple social media at once
When you post to multiple social media at once, review the post for each audience: a mention, a link or a call to action may need to change by platform.
Cross-platform publishing is posting one piece of content to several social networks at once, from one tool, instead of uploading it to each app in turn.
Postdom posts to TikTok, Instagram Reels, YouTube Shorts, LinkedIn, Facebook Reels, X, Snapchat Spotlight, Threads and Bluesky. Videos publish to TikTok, Instagram, YouTube, Facebook and LinkedIn; slideshows to TikTok, Instagram, Facebook and LinkedIn.
| Format | Where it can go |
|---|---|
| Videos Postdom makes | TikTok, Instagram, YouTube, Facebook and LinkedIn |
| Slideshows Postdom makes | TikTok, Instagram, Facebook and LinkedIn |
| Your own finished videos, through the API or MCP | Any of the nine platforms Postdom posts to |
Cross posting social media
Cross posting social media works best when every platform gets a native-looking post. Postdom makes posts in formats that already work on TikTok and Instagram: real clips and photos with native text boxes.
One submission is not proof that every account is live. Postdom keeps the result for each one, including the reason when a platform says no.
Postdom vs schedulers that post everywhere
Schedulers such as Buffer, Hootsuite and Sprout Social also post one update to several networks. They publish posts you make. Postdom makes the posts from your website, then publishes each one you approve to every account you choose.
Each platform has different rules, so a cross-post can work on one network and fail on another. Two examples from the platforms' own docs:
- Instagram accounts are limited to 100 API-published posts in a 24-hour moving period (Meta's Instagram Platform content publishing docs, checked 9 October 2026).
- TikTok restricts posts from unaudited Content Posting API apps to private viewing until the app passes TikTok's audit (TikTok for Developers, Content Posting API docs, checked 9 October 2026).
Postdom checks the caption and video limits each platform publishes before it posts, and keeps a separate result for every account.
What Postdom does for you
Postdom turns your website into ready-to-post videos, slideshows and single images in your brand, and posts the ones you approve to TikTok, Instagram and more.
- 01
Paste your website
Postdom reads your brand from it: logo, colours, fonts, tone, what you do and who it's for.
- 02
Get ready-to-post content
Your For You feed fills with finished posts in formats that already work on TikTok and Instagram: real clips and photos with native text boxes.
- 03
Approve, edit or skip
Nothing posts until you approve it. At your first approval, connect TikTok or Instagram, and Postdom schedules what you approve in your time zone.
- 04
Let it learn
Every approve, edit and skip shapes the next posts. Once 9 of your last 10 posts of one type are approved without edits, Postdom offers to post that type without review.
Questions about posting everywhere at once
Can I post to all social media platforms at once for free?
Yes. Postdom's Free plan connects 2 accounts and posts to them together. No card needed.
Which platforms does Postdom post to?
TikTok, Instagram Reels, YouTube Shorts, LinkedIn, Facebook Reels, X, Snapchat Spotlight, Threads and Bluesky.
Does every platform get the same post?
The same post goes to each account you choose, checked against each platform's limits first.
What if one platform fails?
The others still publish, and the failed one keeps the platform's reason so you can fix it.
What is the 5-3-1 rule on social media?
It isn't a platform rule, and versions differ. The best-known one is an engagement habit: like 5 posts, comment on 3 and gain 1 follower each day. It's often mixed up with the 5-3-2 content mix: out of every 10 posts, 5 from other sources, 3 of your own and 2 personal.
What is the 5 5 5 rule for social media?
It's an informal daily engagement habit, not a platform rule, and versions differ. A common one: comment on 5 posts, reply to 5 stories and send 5 messages to people in your niche. It takes about 15 minutes. It helps people notice you; the posts still have to be worth following.
Start free with Postdom
Paste your website, approve a post, and send it everywhere at once.
Your website is all it needs
Free makes 1 post a month. No card.