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Limit on the number of attachments allowed on a trello board

Trello recently came up with a warning message, 'You are approaching the limit on the number of attachments you can have on a board. Please remove any attachments which are unnecessary.'


Our company uses trello every day to add new cards, so deleting a few attachments won't really help in the long term. Can anyone advise please?

Will archiving an old and no longer used list help please?

1 answer

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Nathan Smith
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
Apr 19, 2023

Hey @Jenny Banks 

In Trello you can have a maximum of 36000 attachments on any Trello board these are split between open and archived cards.

As this limit includes attachments on archiving card you won't be able to archive them on that board to reduce the number of attachments. The best thing to do to stop you hitting the limit on attachments on this board will be to move cards to another board, there are a couple of ways you could do this:

  • You could split the board in two so you move some of your lists to another board using the steps on this page -
  • Or, instead of archiving cards on your current board, you could setup a second Archive board so that when you want to archive cards you move them to this new board instead to stop the number of cards on your board building up

Thanks for your help!

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