Images make pages attractive, but they are also where many SEO problems hide. Large files slow the page, missing alt text hurts accessibility and image search, and names like IMG 9921 tell Google nothing. When I audited a furniture store in Chiniot, its product pages had beautiful photos but every one was 3 MB, unnamed and without alt text. Fixing images alone made the pages load much faster and brought visitors from Google Images.
What our analyzer checks
The Image SEO Analyzer reads every image on the page and reports:
- Alt text, whether it is present, empty or missing
- File names, flagging generic names like image1 or DSC 0045
- Formats, showing which images use modern formats like WebP or AVIF
- Dimensions, checking whether width and height are set to avoid layout shifts
- Lazy loading, showing which images load only when needed
- A summary score and a full table of every image
How to use it
- Open the Image SEO Analyzer.
- Enter the page URL.
- Click Analyze Images.
- Review the summary, then work through the table row by row.
How to fix common image problems
- Missing alt text. Write a short, accurate description of each meaningful image. Our Image Alt Text Generator can help.
- Generic file names. Rename files before uploading using the Image Filename Generator.
- Old formats. Convert large JPG and PNG photos to WebP with the Image Size Optimizer.
- Missing dimensions. Add width and height attributes so the browser reserves space and the page does not jump.
- No lazy loading. Add loading lazy to images below the first screen. Keep the main hero image loading normally.
Why image SEO matters
Google Images is a big source of traffic for shops, recipes, travel and design sites. Good alt text and file names help your images appear there. Fast images improve Core Web Vitals, which are part of Google's page experience signals. And proper alt text makes your site usable for people who rely on screen readers.
Check your most important pages
Start with pages that matter most: the homepage, top product pages, popular blog posts and category pages. Then fix the templates. If your theme loads images without dimensions or lazy loading, fixing the theme once improves every page.
A real example
A wedding photography studio in Lahore had a portfolio page with sixty large images. The analyzer showed no alt text, file names from the camera, all JPG files and no lazy loading. We converted the images to WebP, renamed them with descriptive names like mehndi decor lahore, wrote short alt text for each and added lazy loading below the first row. The page became several times lighter and portfolio images began showing in Google Images for local wedding searches.
Common mistakes to avoid
- Stuffing keywords into alt text. Describe the image naturally.
- Lazy loading the main hero image. It should load right away.
- Uploading huge originals and relying on the browser to shrink them.
- Forgetting background images set in CSS. They still affect speed.
Make image checks part of publishing
The easiest way to keep images healthy is to check them before a page goes live, not months later. Build a short routine for your team. Rename the file, compress it, write alt text, upload it and then scan the page once. On busy stores that add products every day, assign one person to run the analyzer on new product pages each Friday. Problems caught in the same week take minutes to fix, while problems left for a year can take days to clean up across hundreds of pages.
Frequently asked questions
Do decorative images need alt text
They should have an empty alt attribute so screen readers skip them.
Which image format is best for websites
WebP is a great default with wide browser support. Use SVG for logos and icons.
Can I check a whole website
The analyzer checks one page at a time. Start with your most important templates and pages.
Scan your images now with the free Image SEO Analyzer.