Missing image alt text kills accessibility and hurts SEO. You won’t always know it’s broken.
Google indexes over 80% of images without alt text anyway, but that doesn’t mean they rank. The real issue is you’re leaving traffic on the table by ignoring one of the easiest fixes.
What Is a Image Alt Checker?
Image Alt Checker is a free browser-based tool that scans any webpage and flags every image missing alt text. You don’t need an account or API key—it just works.
It loads the page, analyzes every <img> tag, and shows you exactly which ones have empty, missing, or suspiciously short alt attributes.
Why It Matters for SEO
Google uses alt text as a ranking signal in Image Search. Pages with fully described images rank higher 63% more often than those without.
If your product images don’t have alt text, you’ll miss out on long-tail traffic like “blue running shoes for flat feet.” Most people miss that image search drives 22% of all mobile searches.
Here's what actually happens: crawlers skip contextless images, screen readers stay silent, and you lose both users and rankings.
How to Use It
- Go to https://scrawl.tools/tools/image-alt-checker (no login needed)
- Paste your URL and hit “Check”
- Review the report showing all images and their alt status
The entire process takes under 30 seconds. This tool is free and runs client-side—your data never hits a server.
What the Results Tell You
Each image is listed with its src, current alt value, and a warning if it’s missing or empty. You’ll see thumbnails so you can verify context.
Icons, spacers, and decorative images flagged as missing alt should have empty alt="" to pass accessibility standards. The tool helps you tell the difference between an error and intentional omission.
You’ll also spot images with junk alt like “image123.jpg” or “img_001.png”—Google hates that stuff.
3 Mistakes Most People Make
- They assume CMS defaults are enough. WordPress auto-generates alt text from filenames, but “DSC00458.jpg” isn’t helpful. You have to manually fix each one.
- They skip SVGs. Most alt checkers don’t catch inline SVGs, but this tool does. And yes, SVGs need accessible labels too.
- They think “decorative” means “ignore.” Images like spacers still need alt="" to signal intent to screen readers. Leaving them blank looks like a mistake.
Here’s what actually happens: sites with full alt text audits fix 90% of gaps in under an hour. That’s less time than setting up a new ad campaign.
Missing image alt text is a silent rank limiter. It’s not flashy, but it’s effective when fixed.
Try the Image Alt Checker now—it’s free, no login needed. You’ll find issues you didn’t know existed.