Search Engine Journal

Image optimization is both vital for “search engine friendliness” and web accessibility. Let’s look at a few top tools that can help you analyze both the aspects of image proper usage:

Juicy Studio Image Analyser is a handy online tool that will look at each image on a given page and evaluate the following parameters:

• image width / height;
• alternative text;
• an URL to an image long description.

Note that some of the “errors” found by the tool should not necessarily be corrected (e.g. very seldom an image needs a long description URL), so use it rather for informational purposes than as a call to action.

Alt Text Checker (by Durham University) will list an alt text information next to each image found on the page:

Page Size Extractor will give you a quick idea of how the page images influence the page size and hence load time by giving:

• total number of on-page images;
• the largest image size;
• the total image size.

Web Developer FireFox: Toolbar offers an array of image analyzing tools:

• display alt attributes;
• display image dimensions;
• display image sizes;
• display image paths;
• find broken images;
• outline images missing alt attributes;
• hide images / background images;

Firefox Accessibility Extension offers a most useful feature summarizing all page images in the form of a handy table (the feature can found under “Text equivalents” => “List of images“). The table is extremely easy to use as (1) it highlights “the problematic” images and (2) it can be sorted by any of the following parameters:

• Image alt text;
• Image source link;
• Image width;
• Image height;