Tumblr lets you edit the HTML of your theme but not individual pages. There is no default option to edit the alt tag of a picture that you post; Tumblr automatically assigns the text associated with the picture as the alt tag. As far as I know, editing the alt tag is not possible however I was hoping someone might have an answer here - thanks a lot.
migrated from stackoverflow.com May 22 '11 at 10:30
The short answer is no - Tumblr doesn't let you edit the alt text of your photos.
The longer answer is that it should be possible if you tell Tumblr in Settings that you want to edit your posts using plain text/HTML. Then, create a new text post, and add the photo with a normal
An issue here is that you cannot upload an image to Tumblr using this method - you have to link to an image with the