SEO competitor analysis in 3 layers
A proper SEO competitor analysis answers: who ranks, what they did, and what gap you can exploit. PNX runs all three live.
Most paid SERP analysers just show you ranks. PNX shows you why. PNX is a free agentic SEO tool built for creators, founders and SEO teams who need real answers — fast — without paying $99/month for legacy platforms. This guide breaks down everything about free competitor analysis tool in plain English, with a comparison table, internal links to our free tools, and a one-click way to try it yourself.
What PNX compares
- SERP positions for your target keyword (top 10 with title, URL, snippet)
- On-page factors for each ranking URL: word count, headings, schema, internal links
- Content gaps: which subtopics your competitors cover that you don't
- Backlink shape: linking domains, anchor profile (where available)
- SERP features owned: featured snippets, People Also Ask, video carousel
Comparison table
| Tool | Live SERP fetch | On-page comparison | Content gaps | Free |
|---|---|---|---|---|
| PNX | ✅ | ✅ All top 10 | ✅ AI | ✅ Unlimited |
| Ahrefs Content Gap | ✅ | Limited | ✅ | Paid |
| Semrush Keyword Gap | ✅ | Limited | ✅ | Paid |
| SurferSEO SERP Analyzer | ✅ | ✅ | ❌ | Paid |
| MozBar | Limited | ❌ | ❌ | Free |
A repeatable workflow
- Run keyword research to pick the target term
- Use PNX SERP analysis to fetch the top 10
- Audit each URL with the free AI SEO audit tool
- Hand the gap list to your writer (or to PNX) for AI content generation
Keep reading
Ready to put this into practice? Launch PNX free — no credit card, no daily cap, no signup wall.