Technical SEO Checker
Checks crawl errors, indexation status, Core Web Vitals, and server config.
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Checks crawl errors, indexation status, Core Web Vitals, and server config.
From input to insight.
Scan
Analyzes robots.txt, sitemaps, and server headers to understand crawl configuration.
Crawl
Simulates a search engine crawl to find indexation issues and crawl budget waste.
Evaluate
Core Web Vitals, mobile rendering, and technical infrastructure are assessed.
Report
A prioritized list of technical issues with clear fix instructions.
Focus on what moves the needle.
50+
Technical Checks
30s
Scan Time
4.8x
Avg Traffic Gain
What to do next.
Fix Indexation Blockers
Remove noindex directives on pages that should rank.
Optimise Crawl Budget
Consolidate low-value pages and improve internal linking.
Resolve Server Errors
Fix 4xx and 5xx status codes that waste crawl budget.
Improve Core Web Vitals
Address LCP, CLS, and INP issues for better ranking signals.
Common questions.
Yes — Technical SEO Checker is free to run, with no credit card and no account required. Like every free tool on ZON, it shares a site-wide limit of 5 runs per day across all tools combined.
No sign-up. Enter what the tool asks for and get your results immediately — the only thing we ask for is an email if you want a copy of your results or want our team to help with what it finds.
Every visitor gets 5 free tool runs per day, shared across all of ZON's tools — not 5 per tool. The limit resets at midnight UTC. Need more than that regularly? Get in touch and we'll set you up with unlimited access.
Technical SEO Checker runs a real analysis against the input you provide — it's not a generic template. Like any automated check, it's a strong first pass rather than a substitute for a full manual audit, which is where our team comes in.
You can act on the findings yourself, or hand them to our team — every result includes an option to have a ZON strategist follow up on what the tool found, at no cost to get started.
Technical SEO Checker is one of several seo tools in ZON's free toolkit — explore the rest from the related tools below or the full tools directory.
More tools for seo.
Want it fixed, not just flagged?
This tool tells you what's wrong. Book a free call and our team will actually fix it — no obligation.