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Tool Comparison

PageDiag vs Semrush Site Audit: Which Ecommerce Audit Tool Is Right for You?

Semrush is a comprehensive digital marketing platform with a Site Audit feature that crawls your website for technical SEO issues. It is powerful, well-established, and used by marketing agencies worldwide. However, Semrush is expensive (starting at $139.95/month), designed for general SEO rather than ecommerce, and its site audit focuses on traditional technical SEO rather than ecommerce-specific concerns like widget health, review compliance, or AI shopping readiness. PageDiag offers focused ecommerce diagnostics at a fraction of the cost.

Feature Comparison

Speed Testing
Core Web Vitals with ecommerce context
Core Web Vitals (within site audit)
Ecommerce Detection
Auto-detects Shopify, WooCommerce, Magento, etc.
Limited platform awareness
Widget Health
Detects and scores third-party widget impact
Not available
Review Compliance
CMA/FTC review compliance checking
Not available
AI Shopping Score
Scores readiness for AI shopping assistants
Not available
LLM Visibility
Checks how LLMs see your product pages
Not available
PDF Reports
Branded PDF export
PDF export (all plans)
Monitoring
Scheduled monitoring with alerts
Scheduled crawls and alerts
Price
Free tier with paid upgrades
From $139.95/mo (no free tier)

Where Semrush Site Audit Falls Short for Ecommerce

  • 1Semrush starts at $139.95/month - a significant cost for small to mid-size ecommerce businesses. Most store owners only need a fraction of Semrush's features, yet must pay for the entire platform.
  • 2Site Audit is one feature within a massive platform. It is designed for general technical SEO (broken links, redirect chains, meta tag issues) rather than ecommerce-specific diagnostics.
  • 3No widget health analysis. Semrush cannot tell you if your reviews widget, chat tool, or loyalty popup is broken, loading slowly, or degrading the user experience.
  • 4No review compliance checking. As CMA and FTC enforcement around fake reviews increases, Semrush offers no tools to check whether your review displays meet regulatory requirements.
  • 5No AI shopping readiness features. Semrush focuses on traditional search engine optimisation and has not adapted to the growing role of AI assistants in product discovery.
  • 6Overwhelming for store owners who just need to know "is my store healthy?". Semrush presents hundreds of issues across dozens of categories, making it difficult to prioritise what matters for ecommerce.

Why Ecommerce Stores Choose PageDiag

PageDiag is purpose-built for ecommerce and costs a fraction of Semrush. You get ecommerce-specific diagnostics without paying for keyword research, backlink analysis, and other features you may not need.
Platform detection provides tailored analysis for Shopify, WooCommerce, BigCommerce, and other platforms - something Semrush's generic site audit cannot do.
Widget health checking ensures your third-party integrations are functional and not degrading your store experience. Semrush only checks for broken pages, not broken widgets.
Review compliance scanning is a unique feature that addresses real regulatory risk. No general-purpose SEO tool offers CMA/FTC compliance checking for review displays.
AI Shopping Score and LLM Visibility prepare your store for the future of product discovery. While Semrush focuses on traditional Google search, PageDiag evaluates your readiness for AI-driven shopping.
Focused, clear reports designed for store owners. PageDiag tells you exactly what to fix and why it matters for your revenue, without overwhelming you with hundreds of generic SEO issues.

Frequently Asked Questions

Is PageDiag a Semrush alternative?

PageDiag is not a full Semrush replacement - Semrush offers keyword research, backlink analysis, competitor tracking, and many other SEO features. However, for ecommerce site auditing specifically, PageDiag provides more relevant diagnostics (platform detection, widget health, review compliance, AI shopping readiness) at a much lower price point.

Is Semrush worth $140/month for an ecommerce store?

If you need Semrush's full suite of SEO tools (keyword research, backlink monitoring, competitor analysis), it can be worth the investment. If your primary need is understanding your store's technical health, performance, and ecommerce-specific issues, PageDiag provides more targeted diagnostics for free or at a fraction of the cost.

Does Semrush check AI shopping readiness?

No. Semrush focuses on traditional search engine optimisation and does not evaluate how well your product pages are structured for AI shopping assistants like ChatGPT, Perplexity, or Google SGE. PageDiag's AI Shopping Score and LLM Visibility features address this growing need.

Can I use PageDiag instead of Semrush Site Audit?

For ecommerce-specific diagnostics, yes. PageDiag provides platform detection, widget health analysis, review compliance checking, and AI shopping readiness that Semrush does not offer. For broader technical SEO auditing (crawling hundreds of pages for broken links, redirect chains, canonical issues), Semrush's site audit is more comprehensive.

What does PageDiag check that Semrush does not?

PageDiag offers ecommerce platform detection, third-party widget health scoring, CMA/FTC review compliance checking, AI Shopping Score, and LLM Visibility analysis. These ecommerce-specific features are not available in Semrush or any other general-purpose SEO platform.

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Try PageDiag Free - See the Difference

Scan your store with PageDiag and see what Semrush Site Audit misses. Free scan, instant results, no account needed.

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