Kiểm tra Technical SEO

This webpage is using a title tag.

This webpage is using a meta description tag with a sensible length. Use well-written descriptions (avoid keyword stuffing).

This webpage is using social media meta tags (Open Graph / Twitter Card).

Preview how title, URL, and description may appear in search results (reference only).

There is likely no optimal keyword density — search engine algorithms have evolved beyond simple keyword density.

Primary keywords should appear consistently in title, meta description, and headings — not only in body text.

Keyword cloud / token visualization for the page (reference signal).

Heading structure (H1–H6): avoid too many H2s that do not reinforce the page topics.

This website is using a robots.txt file and crawlers can fetch it.

This website has a sitemap file (XML/HTML) and it responds as expected.

This website appears to have a favicon / site icon for browsers.

This webpage is using Google Analytics (or similar measurement tags).

Use HTML Microdata or JSON-LD where appropriate for rich results and clarity.

This webpage has a character encoding declaration (e.g. UTF-8 in HTML or HTTP headers).

This webpage should not rely on deprecated HTML tags for critical layout or SEO signals.

Ensure meta robots does not accidentally block indexing when the page should be indexed.

This webpage should use a canonical link tag pointing to the preferred URL when duplicates exist.

Sitewide nofollow meta is uncommon; verify intent if present (usually informational).

Understand Disallow rules — they can prevent crawling of important paths.

Avoid client-side meta refresh for navigation; prefer HTTP redirects.

ads.txt should be served with a text/plain Content-Type and valid seller declarations.