5 items
Instant on-page SEO audit for any page: titles, meta, headings, links, structured data and more. No sign-up, no API key. Audit the SEO of any web page in one click. RankNibbler SEO Audit runs 83 checks across 10 categories and gives you a weighted A-F score, a category breakdown, and a specific fix for everything that needs attention. It is fast and completely private. The whole audit runs locally in your browser: the extension reads the current page when you click the icon, analyses it on the spot, and sends nothing anywhere. No sign-up, no API key, no account required to use it. What it checks: - Meta: page title, title length, meta description, canonical URL - Content: word count, text-to-HTML ratio, readability, placeholder text, top keywords - Headings: single H1, H2 subheadings, heading outline and hierarchy - Images: missing alt text, width/height, lazy loading, modern formats - Links: internal vs external, empty links, generic anchor text, social profiles, feeds - Structured data: JSON-LD validity, schema fields, Open Graph, Twitter Card - Technical: indexability, HTTPS, viewport, charset, lang, doctype, hreflang, URL structure - Performance: render-blocking resources, CSS/JS counts, HTML and DOM size, TTFB, page weight - Accessibility: skip link, semantic landmarks, form input labels - Tech stack: CMS, framework, analytics, CDN and SEO plugin detection Click any result to see the detail and a recommended fix, re-scan after a change, or copy a plain-text report to share.
Jun 15, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.