Post on X. Appear on Mastodon. Automatically.
Sync your posts between X and Mastodon automatically — text, images, videos, and threads. Connect with the decentralized Fediverse with zero extra effort.
Automated Flow
Simple Setup
How It Works
Connect Accounts
Link your X and Mastodon accounts securely with OAuth.
Choose Method
Pick manual one-click posting or set up full automation.
Set Schedule
If automating, choose your posting frequency.
Start Sharing
Begin cross-posting to Mastodon instantly.
Flexible Workflow
Two Ways to Cross-Post
Manually CrossPost Anytime
Perfect for sharing specific posts whenever you want. One-click cross-posting at your fingertips with full editing control.
- Select any post from your feed
- Edit in-app before posting
- Click to instantly post to Mastodon
- Edit directly on Mastodon after posting
- All formats auto-adjusted to platform
Best for: Selective sharing and maintaining full control over your Fediverse presence.
Fully Automated Syncing
Set it and forget it. We automatically sync your X posts to Mastodon without you lifting a finger.
- Automatically syncs your posts between X and Mastodon
- All formats (text, images, videos, links) auto-adjusted
- Long posts split into threads automatically
- Full automation means zero manual work
- Keeps your Mastodon profile consistently active
Best for: Building a Fediverse presence consistently without the daily posting grind.
Growth Strategy
Why Post to Mastodon?
Join a Community
The Fediverse is thriving with passionate communities. Build your audience with people who value open social networks.
Save Time
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.
The Fediverse
Understanding Mastodon
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.
Powerful Features
Optimized for 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 for better community engagement.
Character Count
Mastodon's generous character limit means your full posts go through without truncation.
Instance Support
Works with any Mastodon instance, from mastodon.social to your own private server.
Questions before you start?
Everything you need to know about X ↔ Mastodon syncing.
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.
Ready to grow on X and Mastodon?
Set up crossposting in under 2 minutes. Automatic or manual — your choice.
Start Your Free Trial