Heading and Alt Text Checker

Fix the basics that help people and search engines

Heading order, alt text and link wording are three small things that affect accessibility and SEO on every page. This checker pulls them out of a live page and points to the ones that need attention.

How to use it

1. Enter the URL of a public page and press Check.
2. Review the heading outline, shown as an indented list. Problems such as a missing H1, several H1s, skipped levels and empty headings are flagged on the heading and summarised above it.
3. Open the images tab to see each image with its alt text status: missing, empty (decorative), weak or good.
4. Open the links tab for links with empty text, generic text like "click here", raw URLs or very short text.
5. Download the full report as CSV to hand to a developer or content team.

The rules behind the checks

• One H1 that states the page topic, then H2 for sections and H3 for subsections.
• No skipped levels: going from H2 straight to H4 confuses the outline.
• Alt text: short, specific and meaningful. Describe what the image adds to the page, not "image of". Use empty alt for decoration.
• Link text: make it make sense on its own. "Download the 2026 price list" beats "click here".
• Image links: the alt text becomes the link text, so an image link with no alt is an empty link.

A quick fix routine

1. Fix the missing H1 or merge duplicate ones.
2. Repair skipped levels by changing the heading tag, not its styling.
3. Add alt text to content images first, then mark the decorative ones empty.
4. Rewrite vague links.
5. Re-run the check.

Limits

The checker evaluates wording by simple rules and cannot see whether alt text truly matches the picture. Content injected by JavaScript is not included, and only the first 1,000 images and 1,500 links are listed. For a complete audit combine it with the website audit checker.