SEO Checker
A strong technical foundation is the backbone of organic growth. Enter your domain to instantly identify broken links, slow-loading assets, and structural SEO issues.
Why technical SEO decides whether your content ever ranks
You can write the best article in your niche. If Google cannot crawl it, render it, and index it cleanly, none of it matters. Technical SEO is the foundation layer that decides whether search engines can even read your content, never mind rank it.
Most SEO audits people pay for charge $500 to $5,000 and check the same 30-50 technical signals: HTTPS, robots.txt, sitemap, canonical tags, mobile viewport, heading hierarchy, schema markup, internal linking. The checks are public, documented, and deterministic. There is no magic in the audit itself, the value is in catching the issues before they cost you months of lost ranking.
This free SEO Checker runs those same checks in under 10 seconds. Paste your URL, get a list of failed checks with plain-English explanations and a fix order. No signup, no credit card, no API key. Most blogs we test have between 3 and 9 blocking issues that take 30 minutes to fix and unlock weeks of compounding ranking gains.
Every signal Google uses to decide if your page deserves a shot
Every check runs algorithmically against your live HTML. Same page, same checks, same score, no opinion, no LLM judgment. We fetch your URL, parse the response with industry-standard tools, and run the technical signal list below. Each check has a documented rationale tied to Google's public guidelines or proven ranking research.
How to turn the audit into ranking gains
Running the audit takes 10 seconds. Turning the result into ranking gains takes a fix order. Here is the order that works for almost every site we have tested:
- Fix the security and crawl gates first. HTTPS, robots.txt, sitemap, and canonical tags. Without these, nothing else matters because Google may not even crawl the page.
- Fix the mobile and rendering gates. Mobile viewport meta and any blocked resources (CSS, JS, fonts). Mobile-first indexing means a desktop-only site is a non-starter.
- Fix the metadata layer. Title length, meta description, Open Graph tags. These do not change rankings directly, but they change click-through rate, which feeds back into rankings.
- Fix structure and schema. Exactly one H1, valid heading hierarchy, JSON-LD schema for articles. Structure is what Google and AI engines extract to understand the page.
- Fix internal linking. At least two internal links from every page. Pages with no incoming internal links are called orphan pages, Google rarely ranks them.
After the fix, wait 7-14 days for Google to re-crawl. Re-run the audit, check the delta, and repeat. Most blogs we have worked with hit a perfect score within two passes, the third pass is just maintenance.
Want this on autopilot? Articfly ships every article with the full technical stack pre-built: canonical tags, schema markup, mobile viewport, valid heading hierarchy, internal links, OG tags. You write the topic, we ship the article ready to rank. Article Audit scores individual articles for both SEO and AEO if you want a deeper look at content-level signals.
Frequently asked questions
Is this SEO Checker really free?
Yes. No signup, no credit card, no API key. Paste any URL and you get a full technical audit in under 10 seconds. We rate-limit by IP to keep the tool free for everyone, with a generous cap that covers normal use.
What does a technical SEO audit actually check?
A technical audit looks at the foundation that lets search engines crawl, render, and index your pages: HTTPS, robots.txt, sitemap, canonical tags, meta tags, heading structure, mobile viewport, schema markup, and internal linking. Skip this layer and even the best content stays invisible.
How is this different from Ahrefs Site Audit or Screaming Frog?
Ahrefs Site Audit and Screaming Frog are powerful crawlers built for full-site audits across thousands of URLs. They cost $99-$449/month or need a paid license. This tool is a single-page checker you run in 10 seconds from a browser, no install, no signup. Use it to spot fix-this-now issues before you spin up a paid crawler.
Will fixing every check guarantee a top Google ranking?
No. A clean technical foundation removes blockers that prevent ranking. It does not, by itself, beat competitors with stronger backlinks, deeper content, or more topical authority. Treat the score as a prerequisite, not a finish line.
Does the tool work for non-English sites?
Yes. Every structural check is language-agnostic: HTTPS, schema, headings, sitemap, robots.txt, meta tags, and viewport apply to any language. Content-specific signals like keyword density are not part of this checker, that lives in our Article Audit tool.
How often should I run a technical SEO audit?
Run a fresh audit after any major site change: a redesign, a CMS migration, a new framework, a plugin update, or a content batch publish. For maintenance, monthly is enough for most blogs. Sites that publish daily should audit weekly to catch broken schema or stripped meta tags early.
What should I fix first if the score is low?
Fix in this order: HTTPS, robots.txt, sitemap, canonical, mobile viewport, then heading hierarchy and meta tags. The first five are pass/fail gates Google uses before it even considers content quality. Fix them and you unlock everything else.
Can I share the audit result with my team or client?
Yes. The result page is shareable, send the URL to a developer, a client, or a content lead and they see the same scores and recommendations. Many of our users run this as a baseline audit before kicking off a new SEO engagement.
Stop guessing. Start ranking.
Run the audit above, free, no signup. Then let Articfly ship 30 SEO articles a month with every technical signal pre-built, so you never have to audit a self-written page again.
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