How to Edit Image Size in HTML on Tumblr. If your blog images are too large, users may have to scroll to see them. Make the images too small, and blog visitors might not notice them.

The image size can be changed using simple methods. We show you the best ways and tools for lossless compression.

How to Measure a Website's File Size. As you add HTML documents, images, videos, PDFs and other files to your business website, you may lose track of how large your site is.