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Free Alt Text Checker
Paste a URL, get an ALT Quality Score from 0 to 100 in about ten seconds.
An alt text checker scans a web page, reads the alt attribute of every image and flags descriptions that are missing, generic, duplicated, too short or too long. Filikod’s free checker returns an ALT Quality Score from 0 to 100 in about ten seconds, on any public website, with no account and nothing to install.
Run a free alt tag checker on any URL
Paste a URL and get your ALT Quality Score in seconds: images with no alt text, generic, duplicate or too-short descriptions — every issue listed by category.
- Free
- No sign-up
- Any website
- Instant result
WordPress site? The free plugin audits your entire media library, not just one page.
Benchmark — 2,449 images audited
What is an alt text checker?
Alt text issues are invisible when you browse: the layout looks fine and visitors notice nothing. Search engines and screen readers do. An alt text checker makes the invisible measurable. It reads the alt attribute of every image on a page, classifies each one as missing, generic, too short, duplicate, too long or correct, and turns the result into a single score you can track over time.
Across the 2,449 images we have audited, 1 in 4 has no alt text at all and the average score is 67.6/100. Odds are your pages have room to improve.
How to check if an image has alt text
From a single image to a whole site, here are the four ways to check alt text, from slowest to fastest. The full guide details each method.
Browser DevTools
Right-click an image and select Inspect. If the img tag shows an empty alt or no alt attribute at all, that image has no alt text. Free and reliable, but one image at a time: a 40-image page takes a while.
Browser extension
Accessibility extensions highlight images without alt on the page you are viewing. Good for spot checks while browsing, less so for a complete audit.
Online alt text checker
Paste a URL above: every image on the page is read, classified and scored in about ten seconds. The fastest way to get a complete picture of one page.
WordPress plugin
The free Filikod plugin audits your entire media library, including images uploaded years ago, and lets you fix everything in bulk.
How to check alt text on a website
You do not need Moz, Ahrefs or a paid crawler to check alt text on a website. Start with the pages that matter: your home page, your best-selling products, your most-read articles. Run each one through the checker above and in a few minutes you have a complete, scored picture of the pages that carry your traffic.
The checker audits one page at a time by design, which keeps results fast and precise. When you are ready to fix the whole site, the free WordPress plugin takes over: it audits every image in the media library, whatever page uses it.
What the ALT Quality Score measures
The score is deterministic: no AI, no black box. Every image goes through the same rules, the first match wins and each image lands in exactly one category. The page score is the simple average, decorative images excluded; a page with zero issues scores 100. The full methodology is public.
| Status | Rule (first match wins) | Score per image |
|---|---|---|
| Decorative | role="presentation" or aria-hidden="true" | excluded from the average |
| Missing | empty after normalization | 0 |
| Generic | dictionary term, known pattern or lone word containing a digit | 20 |
| Too short | under 8 bytes | 40 |
| Duplicate | same alt on 2+ images of the page | 60 |
| Too long | over 125 bytes | 70 |
| Correct | everything else | 95–100 |
Alt text checker vs alt tag checker — is there a difference?
None. “Alt tag” is the everyday name for the alt attribute of the img tag; strictly speaking, HTML defines an alt attribute rather than an alt tag. Whichever term you use, this tool checks the same thing: the content of that attribute on every image of the page.
Ready to fix your alt text at scale?
The checker shows you what to fix. The free Filikod plugin does the fixing: filter your media library by issue, edit alt text in bulk and watch your score climb. Rated 5/5 on WordPress.org.
Alt text audit and bulk management for WordPress. Quality score, bulk fixing, accessibility. Built in France by Lyode.
★★★★★ 5/5 on WordPress.org
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