When I blog, I have a particular banner image that I use at the end of every blog post with my contact information on it.
Instead of uploading it 6 million times, I just go into my media files to add to each blog post.
I've noticed that each time I go to add it, whatever ALT tags that I had from my previous post are still visible when I go to add the image to my current post.
So my question is, each time I add the image, is it change the alt tags for all of my previous posts as well? Or do the old posts still maintain the same alt tags, even though they are constantly changing in the media file.
Hopefully you guys understood that.