Free AI Visibility Checkers That Actually Find Issues (2026)
7 genuinely free tools that show whether Google, ChatGPT and Perplexity can read your store — what each one finds, and what none of them tell you.
November 2, 2026 · 6 min read · ai-visibility · free-tools · geo · audit
Short answer: most "free SEO audit" tools are trials that stop at a paywall right before the results. The seven below are genuinely free, and together they answer the one question that matters in 2026: when a shopper asks ChatGPT or Perplexity what to buy, can those systems even read your store?
In this article
The 7 tools at a glance
| Tool | What it checks | Really free? | Best for |
|---|---|---|---|
| NIMSEO | AI readability (GEO), citability (AEO), SEO foundations — scores without an account, full report free with an e-mail code | Yes, full report | Online stores, especially Shopify, Salla, Zid, Converty |
| Google Search Console | How Google indexes you | Yes | Index coverage, real queries |
| Bing Webmaster Tools | How Bing indexes you (feeds Copilot) | Yes | The AI channel people forget |
| Ahrefs Webmaster Tools | Backlinks + technical crawl of your own site | Yes (own site) | Link profile |
| Screaming Frog | Deep technical crawl | Free up to 500 URLs | Finding broken structure |
| Google Rich Results Test | Structured data validation | Yes | Checking one page's Product markup |
| PageSpeed Insights | Speed + Core Web Vitals | Yes | Performance basics |
What "AI visibility" actually means
Three different questions hide behind the phrase:
- Can AI systems reach and read your pages? (GEO — generative engine optimization). AI crawlers like OAI-SearchBot and PerplexityBot don't execute JavaScript the way browsers do. If your product data only appears after JavaScript runs, many of them see an empty page.
- Can AI systems quote you as an answer? (AEO). That takes structured data (Product, Offer, Organization), clear answers near the top of the page, and consistent facts.
- Are the classic search foundations in place? (SEO). Sitemap, indexability, titles. AI search still leans on these.
Most free tools only cover question 3. That's the gap this list closes.
The tools, honestly
1. NIMSEO — the only one built for the AI question
NIMSEO fetches your store the way AI bots do: it checks whether your robots.txt blocks AI search crawlers, whether your pages are readable without JavaScript, whether your product pages carry valid Product/Offer markup, and whether language and direction tags are set correctly. You get three scores (GEO, AEO, SEO) and a prioritized fix list. The scores need no account; the full report is free with an e-mail code. Where it's limited: it audits readability and structure, not your backlink profile or keyword rankings — pair it with Search Console for those. It's also the only tool on this list that handles Arabic storefronts natively.
2. Google Search Console
Non-negotiable. It won't tell you anything about ChatGPT, but it's the ground truth for whether Google indexes your pages and which queries you actually appear for. Verify your domain, submit your sitemap, check the Pages report monthly.
3. Bing Webmaster Tools
Underrated: Bing's index feeds Microsoft Copilot and (historically) parts of the ChatGPT browsing stack. Ten minutes of setup covers an AI answer channel most store owners ignore.
4. Ahrefs Webmaster Tools
Free for your own verified site. The technical audit is solid and the backlink data is the best you'll get without paying. It won't assess AI readability.
5. Screaming Frog (free tier)
Crawls up to 500 URLs. Switch the user-agent to GPTBot and disable JavaScript rendering, and you can approximate what an AI crawler sees — a power-user trick that mirrors what NIMSEO automates.
6. Google Rich Results Test
Paste one product URL, see whether your Product markup is valid and eligible. Page-by-page, so use it to verify fixes rather than to audit a whole store.
7. PageSpeed Insights
Speed isn't an AI-visibility factor per se, but timeouts kill crawls. If your pages take 10 seconds to respond, every bot suffers.
What none of these tell you
Whether ChatGPT actually cites you when shoppers ask for recommendations. Measuring citations requires running real queries against the AI systems repeatedly over time — that's monitoring, not auditing, and no honest tool offers it free today.
FAQ
Can I just ask ChatGPT to audit my site?
You can, but ChatGPT browses as a one-off reader; it doesn't test bot access, JavaScript-free rendering, or structured data systematically, and it will happily guess. Use a tool that fetches like a crawler.
Is a free report enough, or do I need a paid audit?
For finding the blocking issues — bot access, empty JavaScript pages, missing product markup — free tools cover it. Paid tools add depth (rankings, competitors, monitoring), not different answers.
My store scores well on SEO. Does that mean AI can read it?
Not necessarily. A store can rank on Google (which renders JavaScript) and still serve empty pages to AI crawlers (which often don't). That's the single most common issue we find.
How often should I re-check?
After every theme change, app install, or platform migration — those are when robots.txt rules and rendering behavior silently change.
Does blocking GPTBot hurt my visibility?
Blocking training bots (GPTBot, ClaudeBot) doesn't affect AI search. Blocking search bots (OAI-SearchBot, PerplexityBot, Claude-SearchBot) does. Many stores block both without realizing the difference.
Test your store now: NIMSEO's full report is free and takes under a minute — run the check.