Any way to reduce the size of the card cover on Trello?

It seems like the only option is to remove it.

enter image description here

  • Did the answer below work for you?
    – codecowboy
    Commented Jul 5, 2016 at 9:12

1 Answer 1


You need to attach a picture with a greater width/height ratio. Try using a resize service like http://cloudinary.com/ when attaching.


Trello will always try to show your picture with the width of a card, which is fixed. If the image has a low width/height ratio, the image will stretch to the top until it makes the width equal to the card width, looking bigger. And vice-versa.

  • firesize seems to no longer exist fyi. Can you also explain why the height / width ratio makes a difference? why would 4:3 be larger than 16:9 for example?
    – codecowboy
    Commented Jul 5, 2016 at 9:11
  • 1
    I've updated the answer.
    – fiatjaf
    Commented Jul 5, 2016 at 21:17

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