Side-by-side comparison
Semrush vs Ahrefs
Compare Semrush and Ahrefs across pricing, features, and fit for your e-commerce stack.
Semrush
The full SEO toolkit for e-commerce keyword research and site audits
FreemiumQuick Comparison
About
Semrush
Semrush is the most comprehensive SEO platform available and covers more ground than any single-purpose alternative. Keyword research, competitor gap analysis, site audits, backlink monitoring, and content grading are all in one subscription. For e-commerce, the most useful applications are finding high-intent commercial keywords that competitors rank for, auditing crawlability and page speed issues before they hurt rankings, and tracking position changes after publishing new content. The platform is genuinely deep and takes time to learn well. Operators looking only for keyword research will find it over-specified relative to dedicated tools like Ahrefs or Keyword Tool. The free plan is limited to 10 results per query, so meaningful use requires a paid subscription that starts at a price point that gives smaller stores pause.
Ahrefs
Ahrefs built its reputation on having the most comprehensive backlink index in the industry, and that remains its strongest differentiator against Semrush. Link builders, digital PR teams, and content strategists who spend a significant portion of their time on off-page SEO tend to prefer it for that reason. The keyword research tools are equally capable, with accurate search volume data and a content gap tool that identifies topics competitors rank for but you do not. For e-commerce operators, the Site Audit and Rank Tracker are useful for monitoring technical health and tracking category page positions over time. Ahrefs has no meaningful free tier. The entry-level paid plan is priced for professionals rather than early-stage stores. If you are spending serious money on SEO, the data quality justifies the investment.
Key Features
Semrush
Keyword Research
Database of over 20 billion keywords with search volume, keyword difficulty, CPC, and SERP feature breakdowns. Filters by intent (informational, commercial, transactional) to focus on buyer-ready queries.
Competitor Gap Analysis
Enter any competitor domain to see which keywords they rank for that you do not. Surfaces quick-win opportunities where you have relevant content but your competitors outrank you.
Site Audit Tool
Crawls your store and flags technical SEO issues: broken links, duplicate meta tags, missing canonical tags, page speed problems, and crawlability errors prioritised by impact.
Backlink Analytics
Tracks your backlink profile and monitors new and lost links. Identifies toxic links that could be affecting rankings and provides a disavow export for Google Search Console.
Ahrefs
Backlink Index
One of the largest link indexes available, with crawl frequency that surfaces new and lost links within days. Critical for competitive link gap analysis and digital PR tracking.
Keywords Explorer
Keyword research across 10 search engines with accurate click data, traffic potential, and SERP history. Shows how the search result page actually looks for a given term before you invest in content.
Content Gap Tool
Compares your content coverage against up to 10 competitors. Surfaces topics your competitors rank for collectively that you are not targeting, prioritised by traffic potential.
Site Audit
Technical SEO crawler that identifies issues across crawlability, page speed, meta data, and structured data. Visualises your site architecture as a crawl map to spot internal linking gaps.
Screenshots
Semrush
Ahrefs
Ready to choose?
Visit each tool's site to explore pricing, trials, and integrations before deciding.