Como posso converter caixa de texto numa imagem no Indesign?

If you simply want to convert the text frame to an image frame, right click on it and choose Content>Graphic.

If you want the text box to become a graphic WITH the current text as part of the graphic, I would PDF the text frame on a blank page. (Ideally, the page would not be much bigger than the text frame, or you could crop the page in Acrobat Pro). 

Hi @Maria_Rocha Leite1002 what do you mean exactly? Do you want to import a picture in an existing text frame or do you want to transform the text frame content as a picture?

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

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