SEO & Mass-Renaming of Images: Image Name, Alt Text, etc.

[Buildings]

We are currently in the process of changing all of our image names and their alt-tags to be descriptive of their content. For instance, changing image names from image0001.jpg to blue-cell-phone-cover.

We have hundreds of images on our site, would it be best to rename all of the images and update their tags in one sweeping change or trickle the changes, uploading changed images every other day or so?

[RyanKent]

We have hundreds of images on our site, would it be best to rename all of the images and update their tags in one sweeping change or trickle the changes, uploading changed images every other day or so?

It makes no difference to search engines. Do whatever is best for you.

Search engines generally crawl a small percentage of your site each day. Even if you change your entire site at once, they will only see about 5% of the changes today, then another 5% tomorrow and so on.