Mirror and Sync Trello Cards Between Boards (2025 Guide)

Want to sync cards across Trello boards? Click HERE to try our power up for free!

Trello is great for managing projects, but sometimes you need a better way to keep tasks in sync across multiple boards. That’s where a Trello card mirror comes in handy. With mirrored cards, updates made to one card automatically reflect on connected cards across boards. In this guide, we’ll show you how to set up and use card mirrors in Trello using our new powerup.

Click here to check out our card mirror power up, or read more below! Your first 5 mirror cards are free.


What Is a Trello Card Mirror?

Think of a mirrored card as a two-way link between Trello cards. When you update one, the changes automatically appear on the others. Due dates, labels, custom fields — everything stays in sync.

This can be a game-changer for teams that need to:

  • Share tasks between different departments.
  • Maintain private boards while still collaborating.
  • Create centralized boards for an overview of everything.

Check out a GIF of our card mirror in action:

Image: A synced Trello card showing labels and due dates being updated automatically on another card.

Why Use Mirrored Cards in Trello?

Mirrored cards let you automate repetitive tasks and reduce miscommunication. Here are some practical examples:

  • Team Workflows: Create private boards for individual team members while keeping a synced master board for project managers.
  • Collaborating with Clients: Share specific tasks with clients on their own board without exposing your internal workflows.
  • Keeping an Overview: Build a high-level dashboard that syncs with multiple project boards, so you always know what’s happening.
Image: A master Trello board with multiple sources

How to Set Up a Trello Card Mirror

Using the “2-Way Card Mirror and Card Sync” power-up, you can get started in just a few steps. Here’s how:

1. Add the Power-Up

Log in to Trello, and then click this link to enable the powerup: https://trello.com/power-ups/663012ad7fdbae873b13433a/enable

2. Authorize the Power-Up

Once added, open any card on your board. You’ll see an “Authorize” button in the card’s menu. Click it and follow the prompts to link the power-up to your Trello account.

Image: Screenshot of the FullZinc authorization button on the back of a card

3. Create Your First Mirror

Click on the card you want to mirror. Look for the “Create Mirror” option. Select the target board and list where you’d like the mirrored card to appear.

Image: Screenshot of the "Create Mirror" interface, showing options for target board and list selection.

4. That’s It!

You now have two synced cards. Any updates you make to one card will instantly appear on the other. It’s that simple. Your first 5 mirror cards are free!


Everything That Syncs

The “2-Way Card Mirror” power-up ensures that all key card details stay in sync, including:

  • Card members
  • Labels
  • Checklists
  • Attachments
  • Comments
  • Due dates

This means you don’t have to worry about updates slipping through the cracks.


Benefits of Mirroring Cards in Trello

Here’s why mirrored cards can transform how you work:

  • Save Time: Stop manually updating the same card in multiple places.
  • Stay Organized: Keep a clear overview of tasks across boards.
  • Improve Collaboration: Share relevant tasks without oversharing sensitive info.

Whether you’re managing a small team or coordinating a big project, mirrored cards make life easier.


Try It for Yourself

The first five mirror cards are free, so why not give it a try? Add the power-up to your Trello board today and see how it can streamline your workflow.

Got questions? Drop a comment below or email us at support@fullzinc.com. Happy syncing!

Want to sync cards across Trello boards? Click HERE to try our power up for free!