RankWiki

Links & Authority

SEO Quake

SEOquake is a free browser extension that overlays SEO metrics on web pages and SERPs, including link data and diagnostics, for quick analysis.

Also called
SEOquake extension
Applies to
Competitor research, page-level audits, SERP analysis
Commonly confused with
Link density (LD is Linking Domains)

Key points

  • SEOquake provides on-page and SERP metrics without leaving the browser, speeding up competitive research.
  • Its LD metric refers to Linking Domains, not Link Density, a common misconception.
  • Use it for quick competitor backlink checks and page comparisons, but always cross-check with dedicated tools.
  • Interface and available metrics can change with extension updates, so verify labels against current documentation.
  • SEOquake indicators are diagnostic, not direct ranking factors; interpret them alongside other SEO signals.

Why it matters

For SEO practitioners, SEOquake cuts the time needed for competitive research and page-level audits. It overlays link metrics such as L (total links) and LD (Linking Domains) directly on any page or SERP, allowing rapid comparison of two competing pages. Instead of switching between tools, an SEO can spot patterns in link profile diversity within seconds. This immediacy helps decide whether to pursue a link-building strategy, adjust on-page factors, or investigate further with a dedicated tool. Understanding how a page's link profile compares to competitors also informs decisions about keyword difficulty, since pages with strong domain diversity often rank more easily.

Where it changes your decision

  • When assessing a competitor's backlink profile: LD reveals the number of unique domains linking, which informs whether the page's authority comes from a few strong domains or many weak ones. This can influence whether to pursue directory listing seo or build links from diverse backlink sites.
  • When auditing your own pages: L and LD together highlight pages that attract many links from few domains, indicating a need to improve domain diversity. A low LD relative to L suggests over-reliance on a small set of linking sources.
  • When comparing SERP results: SEOquake displays metrics for each listing, allowing you to spot patterns in link profiles among top-ranking pages. This can guide whether to focus on link acquisition or on-page optimisation.

What it is not

  • Some believe LD stands for Link Density; it actually stands for Linking Domains in SEOquake's default configuration. Always verify the metric label against the current extension documentation.
  • Some treat LD as equivalent to total backlinks; LD counts unique domains, not total links. A page can have 1000 links from 10 domains (high L, low LD) or 100 links from 50 domains (lower L, higher LD).
  • Some assume SEOquake metrics are direct ranking factors; they are diagnostic indicators that correlate with performance but are not confirmed signals used by Google.
  • Some think the extension is a substitute for a full crawl tool; it offers a snapshot, not a comprehensive audit. For in-depth analysis, complement with seo spyglass or seo powersuite.

Common mistakes

  • Mistake: Confusing LD with Link Density. Consequence: Misinterpreting the metric and drawing incorrect conclusions about link diversity, potentially overvaluing pages with many links from few domains.
  • Mistake: Treating LD as total backlinks. Consequence: Overestimating or underestimating the breadth of a link profile, leading to flawed link-building decisions.
  • Mistake: Relying solely on SEOquake for backlink analysis without cross-checking. Consequence: Missing critical details such as link quality, anchor text distribution, or follow vs nofollow status that only dedicated tools like seo spyglass can provide.
  • Mistake: Assuming SEOquake's metrics are always current. Consequence: Making decisions based on stale data if the extension has not refreshed its cache.
  • Mistake: Using SEOquake metrics as a direct ranking factor. Consequence: Incorrectly attributing ranking changes to link metrics without considering content quality, user experience, or other SEO signals.
Read next Keyword Difficulty After understanding how SEOquake's LD metric relates to link profiles, reading about keyword difficulty will help you connect link diversity to the actual competition for ranking positions.

Sources

  1. Google Search Central - Introduction to structured data markup in Google Search Best source for the structured-data concept and for avoiding confusion with JSON-LD.
  2. SEOquake official browser extension listing Primary source for current extension availability, permissions, and feature naming.
  3. SEOquake help/documentation Most authoritative source for metric definitions such as L and LD.