Technical SEO analysis
Free Technical SEO Checker
Run a full technical SEO audit on any website. Check indexing, Core Web Vitals, schema, broken links, hreflang, and more — in 60 seconds.
What is the Technical SEO Checker?
Technical SEO encompasses all infrastructure and code optimizations enabling search engine crawlers (Googlebot, Bingbot) to efficiently discover, crawl, and index your web pages. Unlike content SEO or link building, technical SEO guarantees no technical barrier suppress your domain visibility. BACKR's technical checker analyzes your HTML architecture, robots.txt file, canonical tags, HTTP response headers, and overall asset performance. It guarantees your site meets modern web standards and prevents crawl budget waste. Executing a thorough technical audit guarantees that search engine bots like Googlebot can discover, parse, and index all your strategic URLs without encountering blocking errors or unnecessary crawl delays. Our advanced crawler validates HTTP headers, redirects, mobile DOM structures, and Schema.org markup.
How It Works Step-by-Step
From URL scan to automated prioritized action tickets
HTTP Crawl & Header Analysis
Instant check of HTTP headers (200 OK, 301 redirects, 404/500 errors, HSTS security headers).
HTML Structure & Markup Inspection
Verification of heading hierarchy (H1, H2, H3), meta robots tags, and alt attributes.
Core Web Vitals Performance Audit
Evaluation of Lighthouse 13 metrics (LCP, CLS, TBT) for mobile and desktop.
AI-Prioritized Task Queue
Conversion of errors into concrete fix tickets complete with copy-paste code snippets.
Key Features & Capabilities
Canonical Tag Inspection
Detects missing or misconfigured canonical tags to prevent keyword cannibalization.
Robots.txt & XML Sitemap Check
Ensures strategic pages are open to search indexing without accidental blocks.
404 Broken Link Detector
Identifies internal and external dead links degrading user experience.
Schema.org Markup Validation
Inspects your JSON-LD structured data for rich snippet eligibility in Google.
Client-Side JavaScript Speed Analysis
Verifies client-rendered content is correctly rendered by search bots.
Technical Methodology & Deep Dive
Core Web Vitals Performance (Lighthouse 13)
Direct measurement of LCP (Largest Contentful Paint), CLS (Cumulative Layout Shift), and TBT (Total Blocking Time) under official Googlebot mobile simulation.
Indexability & Robots.txt Directives
Detection of noindex tags, robots.txt blocking rules, and HTTP status code tracking (200 OK, 301 redirects, 404 dead links, 500 server errors).
HTML Structure & Semantic Hierarchy
Comprehensive audit of heading tags (H1 uniqueness, H2/H3 balancing), image alt text presence, and clean DOM node depth.
JSON-LD Structured Data Validation
Inspection of Schema.org markup (Organization, Article, Product, FAQPage, BreadcrumbList) for rich snippet eligibility in Google.
Canonical Tag & Duplicate Content Inspection
Detection of duplicate URLs and verification of self-referencing rel="canonical" implementation to prevent cannibalization.
HTTPS Encryption & Security Headers
Verification of SSL certificate validity, HSTS security headers, and elimination of mixed content asset warnings.
Who Is This Tool Built For?
SEO Consultants & Digital Agencies
Generate complete technical audit reports in 1 click to power prospect audits, agency proposals, and monthly client deliverables.
E-commerce Brands & Store Managers
Instantly identify hidden technical errors choking store category pages, product URLs, and organic conversion funnels.
Developers & Technical Leads
Receive prioritized fix tickets complete with ready-to-copy HTML code snippets and CSS/JS optimization instructions.
Technical SEO checker FAQ
What are the most common technical SEO issues found during audits?
Common issues include slow mobile LCP load times, missing canonical tags, internal 404 broken links, and improper robots.txt directives.
How often should I run a technical SEO check on my domain?
We recommend running a technical audit at least once a month or immediately following major code deployments.
Does BACKR support Mobile-First indexing diagnostics?
Yes, BACKR simulates an official Googlebot mobile user-agent to ensure 100% parity with mobile indexing requirements.
Can I export technical fix tickets for my development team?
Yes, all detected technical errors export directly as developer-ready tickets with exact code recommendations.
Does running a technical check put stress on my web server?
No, BACKR uses optimized crawl rates and lightweight HEAD/GET requests that leave production servers unaffected.
How does BACKR measure Core Web Vitals speed performance?
We run headless Chrome launcher instances with official Lighthouse 13 audit scripts to capture real LCP, CLS, and TBT metrics.
Why are 301 redirect chains bad for technical SEO?
Redirect chains waste crawl budget and add unnecessary latency, delaying page rendering and link equity transfer.
How does BACKR test mobile viewport configuration?
We inspect meta viewport tags and evaluate CSS touch target sizing to ensure 100% compliance with mobile indexing rules.
Ready to audit your site?
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