Compose once. See every platform. Ship without surprises.
A focused composer with live previews for every platform you post to. Image crops, line breaks, link cards, hashtag spacing, all rendered the way each platform actually shows them. You fix the awkward stuff here, not in your followers' feeds.
Type on the left. Watch every platform render on the right.
One draft, live preview cards per platform. Catch the truncated line break, the bad image crop, the orphan hashtag, before they ship.
Solo founder tip: stop launching on Tuesday. Talk to 5 customers this week. Write down the exact words they use. That's your roadmap. #buildinpublic
Solo founder tip: stop launching on Tuesday. Talk to 5 customers this week. Write down the exact words they use. That's your roadmap. The next 5 features you ship should come from the last 5 customer conversations you had. #buildinpublic #solofounder #saas
Solo founder tip: stop launching on Tuesday. Talk to 5 customers this week. Write down the words they use. That's your roadmap. The next 5 features write themselves. #buildinpublic #solofounder
Most of your weird posts came from never previewing.
Your photo looks great on Instagram. On X, the auto-crop chopped your face out. You found out from the screenshot a friend sent that night.
The 4-line breakdown that made your tweet land became one big paragraph on LinkedIn. The post is technically there. Nobody read past line 3.
The link preview that unfurled beautifully on Slack just shows as a raw URL on Bluesky. You meant for that headline to do the work. It is doing none of the work.
Is the composer for you?
For you if
- You ship to 2+ platforms and want to see every render before pressing post
- You have lost a post to a bad image crop or a broken line break (everyone has)
- You write your social posts in Notion or Apple Notes today, copy them in, and want a real editor
- You ship media-heavy posts and the auto-resize alone is worth the switch
Not for you if
- You only post to one platform from that platform's app. The native composer is fine.
- You publish from your own code via the API. The composer is for humans, not for scripts. (We have an SDK for that.)
Built for shipping, not just typing.
Every detail of the composer was designed for the moment between writing the post and pressing the button.
Live previews per platform
X, LinkedIn, Instagram, Threads, Bluesky, and 26 more. Each preview matches the platform's actual render. Image crops, line breaks, link cards, "see more" cutoffs, hashtag color, all of it.
Per-platform overrides on the same screen
Tweak the caption for X without breaking LinkedIn. Drop a hashtag on Instagram, keep it on Threads. Every override is one click into the preview card. No tab switching.
Drag, drop, auto-crop
Photos, videos, GIFs, up to 50 MB and five files a post. Still images are framed for the platform they ship to: 1080×1080 Instagram, 1200×630 LinkedIn, 1600×900 X, 1000×1500 Pinterest, 1080×1920 TikTok. Video and GIFs publish exactly as you uploaded them.
Hashtags that fit the platform
AI-suggested hashtags ranked for your post and the platform you are shipping to. X loves 1-2, LinkedIn tolerates 3-5, Instagram lives on 8-12. The composer knows.
Spell check before your audience does
Your browser's own spell checker runs inside the editor, on by default, so the typo your eye skips gets the red underline. It covers whatever languages your browser already knows. One toolbar toggle turns it off when you are writing in something it will fight you on.
Drafts that never disappear
Every keystroke saves. Close the tab, your laptop dies, your kid hits the keyboard, the draft is still there when you come back.
Type. Preview. Ship.
Type once
Open the composer. Write the post the way you want it to read on the platform that matters most. Add hashtags and media.
Watch the previews
Every platform you have connected renders live on the right side as you type. You see the same post the way your followers will, on every network you are shipping to.
Fix what looks weird
Truncated line break on LinkedIn. Hashtag drowning the X version. Image cropping your face on Instagram. Click into any preview to override that one platform without touching the rest.
Ship or schedule
One click posts to every connected network at once. Or hand the post to the calendar, pick a time, and let the queue ship it.
Why this beats the platform-by-platform tour.
Three ways solo founders compose posts today. Only one of them shows you what you are about to ship.
Native composers, platform by platform
What most founders do
- Type the post in Notes, copy it into X, edit it, post.
- Copy it into LinkedIn, reformat the line breaks, post.
- Copy it into Instagram, swap the image, write a caption, post.
- Total: 20 minutes for one post on 3 platforms. Image crops still surprise you.
Buffer or Hootsuite composer
What most schedulers offer
- One text area for all platforms. No live render per platform.
- Previews are static cards, not the actual platform style.
- Per-platform overrides are buried behind a dropdown.
- You find out the image was wrong from the live post.
FoPost composer
What you actually want
- Live previews for every platform as you type.
- Per-platform overrides on the same screen, no tab switching.
- Auto-resize frames your images for the platform they ship to.
- Ship or schedule from the same screen. One click.
Publishes to all major networks
Frequently asked questions
Does the preview match what actually publishes?
Can I write in Markdown?
Can I override one platform without changing the others?
Does it work on mobile?
Can I save templates?
How does AI rewriting work with the composer?
What about video?
Does it support scheduling?
Ready to try content composer?
7-day free trial. 30 platforms. Unlimited posts on every plan.