Why does alt text matter for SEO?

Google uses alt text to understand what an image is about, which affects ranking in Google Images and provides context for the surrounding page content. It is also required for accessibility — screen readers read the alt text aloud to visually impaired users.

When should an alt attribute be empty?

Use alt="" for purely decorative images that add no information — like spacers, ornamental flourishes, or background patterns. Screen readers skip empty-alt images entirely, which is the correct behaviour. The tool flags empty alts so you can verify each one is intentional.

What is wrong with using the filename as alt text?

Filenames like "IMG_1234.jpg" or "hero-image-final-v2.png" tell a user nothing about what the image shows. Screen readers will read the filename letter by letter if no alt is provided, which is a poor experience. The alt should describe the content or function of the image in plain language.

Does this tool follow links or only check one page?

It checks one URL at a time. Paste the page you want audited and it returns every on that page. To audit a whole site, run it on the most important pages — usually the homepage, top landing pages, and any page with rich imagery.

No. The URL is fetched server-side only to extract the image tags, then the result is returned to your browser. Nothing is logged or stored.

Built by Kushal Biswas

Free Tool · SEO + Accessibility

Image Alt Text Auditor

Q: What does the image alt text auditor check?

It scans every tag on the page and audits three things: the alt attribute (missing, empty, too short, generic, or matching the filename), the filename itself (camera-default names like IMG_1234, spaces, uppercase, underscores), and the title attribute (whether it duplicates the alt). Each image gets a severity flag — OK, info, warning, or error.

Q: How long should alt text be?

Aim for 5 to 125 characters. Long enough to describe the image meaningfully, short enough that screen readers do not over-narrate. There is no hard maximum but Google and screen readers typically truncate after ~125 characters.

Paste any URL — get every image on the page audited for alt text, filename quality, and title attribute issues. Built for SEOs, content teams, and accessibility QA.

100% Free No Signup Live Thumbnails CSV Export Nothing Stored

Scan a Page — Audit Every Image

Returns alt text, filename, title attribute, and dimensions for every <img> on the page. Each image is flagged with a severity badge.

Image	Filename	Alt text	Title	Issues

About / This Tool

Image Tags Google — and Screen Readers — Actually Understand

Alt text is the single highest-leverage on-page accessibility fix. It's also a Google Image search ranking signal. This tool surfaces every <img> on a page, checks the alt, the filename, and the title attribute, then tells you exactly what to fix — and what's already good.

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01 / Checks

What Gets Flagged

Missing alt attribute — screen readers fall back to the filename.
Alt is just the filename — "hero-image-final.jpg" tells nobody anything.
Generic alt — "image", "photo", "icon", "graphic" carry no meaning.
Camera-default filenames — IMG_1234, DSC_xxxx, PXL_xxxx, untitled.
Filename hygiene — uppercase, underscores, spaces, numeric-only.
Title duplicates alt — redundant, may confuse assistive tech.

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02 / Workflow

How To Use It

Paste a URL — any public page with images.
Click Audit Page.
Scan the summary cards: total images, OK, warnings, critical.
Filter by severity to see only what needs fixing.
Pass the CSV to your CMS team or content editor.

Best run on landing pages, blog posts, and product pages — anywhere images carry real meaning.

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03 / Audience

Who Uses This Tool

SEO specialists tuning Google Image search visibility.
Accessibility auditors doing WCAG checks.
Content teams QA-ing posts before publish.
Developers validating CMS output.
Designers reviewing image hygiene on launch.

A clean alt-text pass takes 10 minutes and helps both ranking and the people who can't see your images.

Kushal Biswas — weekend free help for founders

🎁

This Weekend

Free slots open

30min

call · then I help build it

Free help / Weekend offer

Alt text fixed. Want more image SEO wins?

Alt text is one of about a dozen image-SEO levers. The bigger wins usually live elsewhere — WebP conversion, lazy-loading, structured data, image sitemap, responsive srcsets, and the actual content quality of the image. If your site is image-heavy and you want a real audit, I'll spend a weekend on it with you, completely free.

No proposal, no upsell, no contract. The only thing I ask in return is a short video testimonial of your experience after we're done.

Who forFounders & operators with image-heavy sites — e-commerce, blog, media

CostZero. No card, no signup, no fine print.

Time30-min call to scope, then I do the actual build over the weekend

CatchShort video testimonial after we're done

Claim a Weekend Slot → Browse Free Tools

Image-SEO things I help with on weekends:

Bulk Alt Rewrite WebP Conversion Image Sitemap Lazy-loading Audit Schema for Images CDN / Compression

FAQ / Common Questions

Frequently Asked Questions

What does this auditor check?

It scans every <img> tag on the page and audits three things: the alt attribute (missing, empty, too short, generic, or matching the filename), the filename itself (camera-default names like IMG_1234, spaces, uppercase, underscores), and the title attribute (whether it duplicates the alt). Each image gets a severity flag — OK, info, warning, or error.

Why does alt text matter?

Two reasons. First, Google uses alt text to understand what an image is about, which affects rankings in Google Images and provides context for the surrounding page. Second, it's required for accessibility — screen readers read the alt text aloud to visually impaired users.

When should alt be empty?

Use alt="" for purely decorative images — spacers, ornamental flourishes, background patterns that carry no meaning. Screen readers skip empty-alt images, which is the correct behaviour. The tool flags empty alts as INFO so you can verify each one is intentional.

What's wrong with using the filename as alt?

Filenames like IMG_1234.jpg or hero-image-final-v2.png tell users nothing about what the image shows. When alt is missing, screen readers read the filename letter by letter — a poor experience. The alt should describe the content or function of the image in plain language.

How long should alt text be?

Aim for 5 to 125 characters. Long enough to describe meaningfully, short enough that screen readers don't over-narrate. There's no hard maximum but screen readers and Google typically truncate after ~125 characters.

Should images have a title attribute?

Usually not. Title attributes on images create a hover tooltip that doesn't appear on mobile and adds nothing for screen readers (most ignore it). If you do use a title, it should add information, not duplicate the alt. The tool flags title-duplicates-alt cases as INFO.

Does the tool follow links or only check one page?

One page at a time. Run it on each high-priority URL — homepage, top landing pages, blog posts with rich imagery. For site-wide audits, run it across your top 20 pages.

Why are some images missing or showing broken thumbnails?

The thumbnail preview loads directly from the image's URL in your browser. If the site uses hotlink protection or the image needs authentication, the preview won't render — but the alt text and filename data still appears correctly.

Is my data stored?

No. The URL is fetched server-side only to extract image tags, then the result is returned to your browser. Nothing is logged or stored.

Feedback / Bug Report

Spotted a bug or have a feature request?

Tell me about it. I read every note — usually reply within a day.