Image Alt Checker
Score whether images have usable alt text — not a ranking trick, just accessibility and snippet hygiene.
What this tool gives you
Check image alt text
Fetch a public page or paste HTML. The checker scores alt coverage — not a ranking trick.
What this checker looks for
Every image needs an alt attribute. Content images describe the subject. Decorative images use empty alt.
Alt present
Every <img> has an alt attribute, even if the value is empty.
Useful text
Content images name what is visible, not “image” or hero.webp.
Length
About 5–125 characters: one specific sentence, not a paragraph.
Decorative
alt="" is correct only when the image adds no information.
src
The tag still needs a file the browser can load.
Not a ranking lever
This is accessibility and snippet hygiene, not a citation trick.
How to use the checker
Fix the page heading first, then image alt, then share cards.
Check the live page
Fetch the public URL or paste the HTML from view-source.
Give every image alt
Missing alt is worse than empty alt. Decorative images use alt="".
Describe content images
Name the visible subject. Skip filenames and the word “image”.
What healthy image alt usually includes
An alt attribute on every image. Useful text on content images. Empty alt only when decorative.
| Part | Job | Default for public sites |
|---|---|---|
| alt attribute | Name or skip the image | present on every <img> |
| Useful text | Describe the visible subject | not image, photo, or filename |
| Length | Specific without stuffing | about 5–125 characters |
| Decorative | Silence assistive tech | alt="" when it adds no meaning |
| src | Point at a real file | src or srcset present |
| Missing alt | Avoid filename announcements | never omit the attribute |
Related GEO pages
Fix charset, lang, favicon and h1, then image alt, then Open Graph.
H1 Checker
Score one visible h1, heading length, title overlap and outline order.
Favicon Checker
Score rel=icon href, type, sizes and apple-touch-icon tab-icon hygiene.
Title and Meta Description Checker
Score unique title, meta description length and matching og:* copy.
Open Graph Checker
Score og:title, og:description, HTTPS og:image and matching og:url.
JSON-LD Checker
Score schema.org identity, page type and review hygiene.
Canonical URL Checker
Score one absolute HTTPS rel=canonical and matching og:url.
GEO Visibility Checklist
Score citation-ready content, entity clarity and weekly mention tracking.
Image Dimension Checker
Score img width and height attributes so the layout does not jump.
Image Loading Checker
Score eager LCP, lazy galleries, fetchpriority and decoding.
Image Srcset Checker
Score srcset, sizes, width descriptors and src fallback.
Tools Lab
More generators, calculators and GEO workflows.
Image alt FAQs
Does perfect alt text make ChatGPT cite my page?
No. Alt helps humans, screen readers and image search name what is visible. Citations still depend on crawl access, answer-ready content and corroboration.
Should decorative images have alt text?
Use alt="" when the image adds no information. Missing alt is worse than empty alt: assistive tech may read the filename.
Can I reuse the filename as alt?
No. hero.webp or “image” is not a description. Write the visible subject in a short sentence.