Keyword Research for E-commerce With Semrush: A Practical Guide

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Official website: semrush.com

Paid ads bring quick traffic, but organic search builds a long-term asset that keeps delivering customers without paying per click. The foundation of e-commerce SEO is keyword research — knowing exactly what your customers type into Google. Semrush is one of the most complete tools for this job.

Why keyword research matters for stores

  • It shows real demand for your products.
  • It reveals how customers describe products (often differently than you do).
  • It helps you prioritize pages: categories, products and blog posts.
  • It uncovers competitors' best traffic sources.

Step 1: Start with seed keywords

List the basic terms that describe your products: "knee pain cream", "posture corrector", "dog car seat cover". Enter them in Semrush's Keyword Overview to see:

  • Search volume — monthly searches.
  • Keyword difficulty — how hard it is to rank.
  • Search intent — informational, navigational, commercial or transactional.
  • CPC — how much advertisers pay, a good indicator of commercial value.

Step 2: Expand with the Keyword Magic Tool

The Keyword Magic Tool generates thousands of related keywords. Use filters to find gold:

  • Filter by intent to separate buying keywords from informational ones.
  • Filter by difficulty to find achievable targets for a newer site.
  • Use question filters to find blog topics ("how to", "best", "vs").

Step 3: Map keywords to page types

Intent Example Best page type
Transactional "buy posture corrector" Product page
Commercial "best posture corrector for women" Category page or comparison article
Informational "how to improve posture at desk" Blog article

Each important keyword should have one clear page targeting it, to avoid pages competing with each other.

Step 4: Analyze competitors

Enter a competitor's domain in Organic Research to see the keywords they rank for and which pages bring the most traffic. Then use Keyword Gap to compare your site with several competitors and find keywords they rank for that you don't.

Step 5: Build a content plan

From your research, create a simple plan:

  • Optimize categories for commercial keywords.
  • Optimize product pages with descriptive titles, unique descriptions and FAQs.
  • Publish blog content answering informational questions and linking to products.
  • Track rankings with Position Tracking to measure progress.

Step 6: On-page essentials

For each target page:

  • Put the main keyword in the title tag, H1 and URL.
  • Write a compelling meta description.
  • Use related keywords naturally in the content.
  • Add internal links between blog posts, categories and products.
  • Use descriptive image alt text.

Final thoughts

SEO is slower than paid ads, but it compounds. With a tool like Semrush and a consistent publishing routine, an online store can build a stable flow of free traffic that reduces dependence on ad platforms and makes the whole business more resilient.

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