AnalyticsPublished02.05.2026

Ahrefs: SEO analysis and link building tool

Complete overview of Ahrefs: what data the service provides, how to use it for competitive research, backlink analysis, keyword research, and rank tracking.

In brief

Ahrefs is a commercial SEO tool that owns one of the largest backlink indexes (second only to Google). The platform provides data on link profiles, competitors' organic traffic, keywords, site audits, and niche research.

What is Ahrefs

Ahrefs is a paid SEO service launched in 2011. Its core specialization is backlink analysis, but the platform covers almost all search optimization tasks: keyword research, site audit, rank tracking, competitor analysis, and brand monitoring.

The main advantage of Ahrefs is its huge and frequently updated backlink index (over 35 trillion known backlinks as of 2025). This makes it indispensable for link building and competitive research.

Ahrefs updates its backlink index every 15-30 minutes (for popular domains) or several times a day for others. It is one of the fastest tools in the industry.

Main features and metrics

  • Site Explorer: shows organic traffic, top keywords, link profile (domains, anchors, link types).
  • Keywords Explorer: keyword research with Keyword Difficulty (KD), search volume, clicks, and thousands of ideas.
  • Site Audit: technical audit of up to 100,000 pages for errors (broken links, duplicates, Core Web Vitals issues).
  • Rank Tracker: track positions by region and device (desktop, mobile).
  • Content Explorer: find the most popular content in any niche for ideas and outreach.
  • Web Explorer: search any pages in Ahrefs index by keywords or domains.

Key Ahrefs metrics:

  • DR (Domain Rating) — domain authority from 0 to 100 (similar to Moz's Domain Authority).
  • UR (URL Rating) — authority of a specific page.
  • Organic Keywords — number of keywords the site ranks for in top 100.
  • Organic Traffic — estimated monthly search traffic.
  • Backlinks — number of unique referring domains.

How to use Ahrefs for SEO

Practical use cases:

  1. Competitor analysis: enter a competitor's URL in Site Explorer → view their top pages by traffic → find weaknesses (pages with few backlinks but high traffic) → create better content and build links.
  2. Keyword research: go to Keywords Explorer → enter a seed keyword → check Keyword Difficulty (KD — lower is easier) → filter by volume and CPC.
  3. Link building: in competitor's Site Explorer → open Backlinks report → filter referring domains by DR > 30, traffic > 1000, relevance → contact them to place your link (e.g., in exchange for a helpful resource).
  4. Broken link building: use Site Audit to find 404 pages → set up 301 redirects to relevant URLs.
  5. Mention monitoring: Alerts feature → track brand mentions or keywords to respond or turn non-link mentions into full backlinks.
PLAINTEXT
Example of finding low-competition keywords:
1. Keywords Explorer → enter a topic
2. Filter: Keyword Difficulty < 20
3. Filter: Volume 100–1000
4. Sort by traffic potential
5. Cluster keywords for pillar pages

Ahrefs alternatives

  • Semrush — stronger in PPC, competitive research, and advertising data.
  • Moz — simpler interface, DA/PA metrics, but lags in link index depth.
  • Majestic — focuses only on links, metrics Trust Flow and Citation Flow.
  • Screaming Frog + Google Search Console — free alternatives for basic auditing and keyword analysis.
Tip: use Ahrefs together with Google Search Console and Google Analytics. GSC provides real clicks and positions, while Ahrefs gives you link profiles and competitor opportunities.
FAQ

Common questions

Ahrefs provides estimates based on its own keyword and click index, which can differ from actual Google Analytics data by 20-40%. Use Ahrefs for competitor comparison, not for absolute figures.
DR (Domain Rating) is a logarithmic metric from 0 to 100 based on the number and quality of unique referring domains. You can improve it only by getting links from high-DR sites. DR itself does not directly affect Google rankings; it's a comparative metric.
Projects can be updated manually or on a schedule (daily/weekly). The backlink index updates automatically every 15-30 minutes for active domains.
There is a 7-day trial for $7 (or a limited free Ahrefs Webmaster Tools, but it's heavily restricted). The full version is paid, starting at $99/month.
No. GSC provides accurate first-party data from Google (positions, clicks, indexing errors). Ahrefs complements GSC with link analysis and competitive research, but does not replace it.
Direct contacts

Discuss your project?

Share your goals and website context — I will suggest a practical next step.

[email protected]@pavelbarushkaLinkedIn