@Ayako Nakanishi - There is currently no way that I am aware of to restrict the types of files that are uploaded, or uploads in general - even Visitors can upload files. My first thought was that, if you really wanted to restrict the file types, you could explore developing your own upload mechanism using the Miro REST API. However, even if that was a possibility, I don’t think you could block users from uploading files through the interface.

Wish List Post

I’d recommend adding this as an Idea in the Wish List category by following the guidelines here: Wish List: Everything You Need to Know.

If you do create a Wish List Idea post, I would also recommend that you post a link to it back here, so that future readers of this post can quickly get to and vote for your Idea.

Lastly, don't forget to vote for your own Idea.

Hi @Robert Johnson , thank you so much for your kind comment! I’m sorry for the to late reply.

I added this idea to Wish List: https://community.miro.com/ideas/new-miro-function-to-prevent-users-from-uploading-files-other-than-images-8793 .

And, may I ask one more question?

We are now thinking about limiting file upload by blocking the URLs (adding to blacklist) below at our network system;

“https://miro.com/api/v1/boards/rboard ID]/upload/* ”

We tried this idea and could successfully limiting the file upload, but we are not sure if this method has any other negative effects on the use of Miro.

For example, we found that when we put URL text on miro board, miro failed to retrieve thumbnail information and display URL card.

If you know of any other uses for the upload API in Miro, we would appreciate hearing about them.

Thank you.

@Ayako Nakanishi - I am unable to answer this as I do not have enough experience in this area of the developer platform.

I would suggest posting this question in the Developer platform and APIs section.