Understand 3xx redirection status codes and their critical role in SEO. Learn how to properly implement redirects to preserve link equity and user experience.
Learn what parse errors are, how they can hurt your SEO, and how to find and fix them for a healthier, more search-engine-friendly website.
Learn why ARIA dialogs and alertdialogs require an accessible name (aria-labelledby or aria-label) and how to implement them correctly for screen reader users.
Learn what a Content-Type header is, why a misconfigured or ‘bad’ content type can create security vulnerabilities and SEO issues, and how to fix it.
Learn why frames and iframes can be accessibility black boxes and how to test them with axe-core. A guide to fixing common issues like missing title attributes.
Learn why using a tabindex greater than zero is an accessibility anti-pattern and how to create a logical tab order using your DOM structure.
Learn why your page should have only one contentinfo landmark (
Learn why every page must contain one, and only one, H1 tag for accessibility and SEO, and how to write an effective main heading for your content.
Learn why a canonical tag injected with JavaScript is a risky SEO practice and how to fix it by including it in the initial server response.
Learn what a broken fragment identifier (or ‘bookmark’) is, why it’s bad for user experience, and how to fix it by ensuring the target element has a matching ID.
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