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.

To reduce image file size without losing quality, use the Bicubic Sharper (reduction) resampling option. This option retains most of the detail while keeping the file size to a minimum.

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

Basically, without image optimization, half of your website is un-optimized. By applying different optimization techniques, you can reduce image file size, allowing the browser to download and ...