Hope you are doing well.
I need some help related to image alt. Please check link first images in which by default img alt text is image url but I want to change it by name. Please let me know how to change it
Thanks in advance
Please let me know how have you put these images in the content? You have done some manipulation with the content, so there is no solution for that. wpForo doesn't show images in that way.
wpForo shows images as a link. We don't have solutions for something that is not created by wpForo.
For an advanced file attachments and image showing options you should check out the wpForo Advanced Attachments addon: https://gvectors.com/product/wpforo-advanced-attachments/
This addon will create correct images, but all previous incorrect images will stay the same.