Cross-Post Between X and Mastodon & Fediverse
Connect with the decentralized social web. Share your posts between X and Mastodon instantly. Edit in-app before posting, then edit directly on each platform after. All text, image, and video formats automatically adjust.
Manual one-click posting or full automation—your choice.
Two Ways to Cross-Post
Choose manual control or set it and forget it
Manual Cross-Posting
Share specific posts whenever you want. One-click posting to Mastodon and all Fediverse instances.
- Select any post from your feed
- Edit in-app before posting
- Click to instantly post to your Mastodon instance
- Edit directly on Mastodon after posting
- All formats auto-adjusted to platform
Best for: Selective sharing and maintaining full control over your Fediverse presence
Automated Posting
Set your schedule and let it run. Automatically sync your posts between X and Mastodon on autopilot.
- Schedule posts every 3, 6, or 12 hours
- Automatically syncs your posts between platforms
- All formats auto-adjusted to each platform
- Full automation means zero manual work
Best for: Building a Fediverse presence without daily effort
Why Post to Mastodon & the Fediverse?
Join the open social web
Join a Community
The Fediverse is thriving with passionate communities. Build your audience with people who value open social networks.
Save Time Managing Platforms
Stop juggling multiple platforms. Automate your Mastodon presence while staying active on X.
Own Your Presence
Mastodon is open-source and decentralized. Your content isn't beholden to any single corporation.
About Mastodon & the Fediverse
What is Mastodon?
Mastodon is a free, open-source social network. It works like Twitter, but isn't controlled by any single company. You create an account on a specific instance (server), but you can interact with users on any Mastodon instance in the Fediverse.
Each instance has its own community guidelines and moderation, giving you more control over your social media experience.
What is the Fediverse?
The Fediverse is a network of interconnected social platforms. Mastodon is one part of it. Think of it like email—you can have Gmail, Outlook, or any email provider, and they all work together.
Your content can reach people on Mastodon, Pixelfed, PeerTube, and other platforms, all without centralized control.
How It Works
Quick setup, seamless cross-posting
Connect Your Accounts
Link your X and Mastodon accounts securely with OAuth.
Choose Your Method
Pick manual one-click posting or full automation.
Set Your Schedule
If automating, choose your posting frequency.
Start Sharing
Begin cross-posting to Mastodon instantly or on schedule.
Powerful Features for Mastodon Posting
Everything optimized for the Fediverse
Auto-Format Conversion
All text, images, and videos automatically adjust to each platform's format and size requirements.
Thread Support
Multi-part posts from X are perfectly converted to Mastodon conversation threads.
In-App Editing
Edit posts in MicroPoster before posting, then edit directly on Mastodon after.
Content Warnings
Easily add content warnings (CW) to your Mastodon posts.
Character Count
Mastodon's generous character limit means your full posts go through.
Instance Support
Works with any Mastodon instance, from mastodon.social to your own.
Common Questions
Is it safe to connect my X and Mastodon accounts?
Yes. We use OAuth, meaning you never give us your passwords. You control what permissions we have, and you can disconnect anytime.
Can I edit posts before and after posting?
Yes! Edit in-app in MicroPoster before posting, then edit directly on Mastodon after. All edits are supported on both platforms.
How are formats automatically adjusted?
All text, image, and video formats are automatically converted to match each platform's requirements. Text length, image sizes, video codecs—everything is handled.
What about thread support?
Yes, threads are fully supported. Multi-part posts from X are automatically formatted as threads on Mastodon.
Is there a free trial?
Yes! We offer a free trial that includes all features—manual posting, automation, editing, everything. No credit card required.
Which Mastodon instance should I use?
Any Mastodon instance works with MicroPoster. Popular options include mastodon.social, fosstodon.org, and many topic-specific instances. Choose one that matches your interests.
Join the Fediverse
Start cross-posting from X to Mastodon today. Manual or automated. Your choice.
Get Started Free