Technical SEO checker and audit tool
Find indexation blockers and fix site errors

Run a deep technical SEO audit to find indexation blockers, broken pages, missing meta tags, redirect chains, and other site errors. Get a prioritized report showing what is wrong, which pages are affected, and what needs to be fixed first to improve crawlability, indexation, and organic search performance.

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Pay As You Go Model
Live Audit Log Crawling...
Scanned URL HTTP Load Time Detected Issues
/services/seo/ 200 450ms Perfect
/old-pricing/ 404 120ms Broken Link
/blog/update-2025/ 200 3100ms Missing H1, Slow

Fix technical SEO errors to maximize organic traffic

A technical SEO problem can prevent otherwise valuable pages from being crawled, indexed, or ranked correctly. Broken links, server errors, duplicate content, missing canonical tags, and incorrect robots directives can all create unnecessary barriers for search engines.

SeLinkPro Technical SEO Scanner crawls your website to identify critical indexing blockers and technical SEO errors. Find broken 404 pages, server 5xx errors, redirect chains, missing meta data, indexability issues, and other problems affecting your site. Get a clear PDF report with the affected URLs so you can fix the highest priority issues first.

Audit workflow

1

Set your website

Enter your domain and define the crawl depth and page limits for your technical SEO audit.

2

Run a deep technical SEO crawl

Our scanner checks HTTP statuses, headers, meta tags, indexability, redirects, and internal link structure across your website.

3

Get an actionable SEO report

Download a white-label ready PDF showing detected issues, affected URLs, and the problems that require your immediate attention.

Comprehensive health checks

Status code analysis

Instantly detect broken pages returning 4xx errors, server crashes returning 5xx, and infinite 301 redirect chains.

Meta data and headings

Identify missing Titles, empty Descriptions, duplicate H1 tags, and broken heading hierarchy across all scanned URLs.

Performance metrics

Find slow loading pages with excessive TTFB response times or massive HTML payloads that hurt your crawl budget.

Indexability rules

Check robots.txt directives, noindex meta tags, missing canonical URLs, and invalid SSL certificates.

Schema markup validator

Audit your structured data and entity relationships to identify invalid or incomplete markup and improve eligibility for Google Rich Results.

Multilingual and hreflang

Detect missing or conflicting hreflang tags, broken alternate links, and regional targeting errors across enterprise global sites.

Advanced duplicate detection

Identify thin content and near-duplicates using semantic similarity hashing. Eliminate low-value pages that dilute your site quality score.

Media and asset SEO

Find heavy unoptimized images, missing alt texts, and broken media files that drag down your Core Web Vitals assessment.

What a technical SEO audit checks

A technical SEO audit examines the technical structure of your website to find problems that can prevent search engines from crawling, understanding, and indexing important pages. SeLinkPro checks the signals that affect crawlability, indexability, internal site architecture, and how search engines access your content.

Instead of showing only a general health score, the audit identifies specific technical problems, shows the affected URLs, and helps you understand which issues should be fixed first.

4xx and broken pages

Find pages returning 404, 410, and other 4xx HTTP status codes. The audit identifies broken URLs that can waste crawl activity, interrupt internal navigation, and prevent users and search engines from reaching valuable content.

The scanner also helps identify broken internal links pointing to unavailable pages, so you can replace, redirect, or remove links that lead to dead ends.

5xx server errors

Detect server responses such as 500, 502, 503, and other 5xx errors that prevent search engines from successfully retrieving pages.

Repeated server errors can make important URLs temporarily or consistently inaccessible. The audit shows which pages are affected so technical problems can be investigated before they become larger crawling and indexing issues.

Redirect chains and redirect loops

Trace redirects from the original URL to the final destination and identify unnecessary redirect chains, redirect loops, and problematic redirect targets.

Long or incorrect redirect paths can make crawling less efficient and can complicate site migrations, URL changes, and internal linking. SeLinkPro shows the redirect path so you can identify where the problem starts.

Canonical URL issues

Check canonical tags across crawled pages and identify missing, invalid, conflicting, or unexpected canonical URLs.

Canonical signals are particularly important on large websites, ecommerce sites, filtered pages, and websites with multiple URL variations. The audit helps identify pages where canonicalization does not match the intended site structure.

Missing and duplicate meta tags

Find pages with missing or empty title tags and meta descriptions, as well as duplicate metadata across multiple URLs.

The audit makes it easier to locate pages that need metadata improvements and identify patterns affecting large sections of a website.

Heading structure

Analyze H1 headings and the broader heading structure of crawled pages. Detect missing H1 elements, duplicate H1 headings, and problematic heading structures.

Heading analysis helps identify pages where the main topic is unclear or where templates create repeated structural problems across many URLs.

Indexability and robots directives

Check meta robots directives, robots.txt rules, X Robots Tag headers, and other signals that control whether search engines can access and index pages.

The audit helps identify URLs that are blocked, marked noindex, or affected by conflicting directives, making it easier to find accidental indexing barriers.

XML sitemap integrity

Analyze URLs discovered through XML sitemaps and compare sitemap information with the live pages found during the crawl.

This helps identify sitemap URLs that return errors, redirect elsewhere, are not indexable, or do not represent the preferred canonical version of a page.

Internal links and site architecture

Analyze internal links between pages to identify broken links, poorly connected pages, and weaknesses in the internal site structure.

Internal linking helps search engines discover pages and understand how different sections of a website are related. The audit provides technical data that can be used to improve the architecture of large websites.

Orphan pages

Identify pages that have little or no internal link support from other crawled pages. Orphan pages can be difficult for search engines to discover through normal site navigation.

Finding these URLs helps you decide whether important pages should be connected to the site's internal architecture, redirected, consolidated, or removed.

JavaScript rendering and SSR

Check whether important SEO content and internal links are available in the server delivered HTML or depend heavily on client side JavaScript rendering.

This is especially useful for JavaScript heavy websites where the initial HTML may contain little or none of the content that search engines need to understand the page.

Page response and crawl performance

Measure HTTP response behavior, server response times, page load characteristics, and HTML payload size during the crawl.

Slow or unstable responses can make large crawls less efficient and can reveal infrastructure problems that affect both users and search engine crawlers.

Hreflang and international SEO signals

Check hreflang annotations and alternate language or regional URLs for missing, invalid, or conflicting relationships.

These checks help international websites identify technical problems that can make it harder for search engines to associate the correct page with the correct language or region.

Duplicate and near duplicate pages

Identify pages with identical or highly similar content that may represent unnecessary URL variations or duplicated sections of a website.

Duplicate analysis is useful for large websites where parameters, filters, templates, or similar pages can create substantial numbers of overlapping URLs.

Images and media files

Check images and other media resources for broken files, missing alt attributes, and unnecessarily heavy assets.

These checks help identify technical and on page problems affecting the accessibility, performance, and overall quality of important pages.

Structured data and schema markup

Analyze structured data found on crawled pages and identify markup that is missing, incomplete, or technically inconsistent.

Structured data gives search engines additional information about page entities and content types, making technical validation useful for websites that rely on rich search features.

Turn technical SEO data into actionable fixes

Find the issues that matter most, see which URLs are affected, and focus your technical SEO work on the problems that can have the biggest impact.

Prioritized issue scoring

Not all technical SEO errors have the same priority. The scanner categorizes detected issues by severity as Critical, Warning, or Notice, so you can identify the most important technical blockers and fix them before lower priority issues.

Developer-ready reports

Generate clean, structured PDF reports with a single click. Each detected technical SEO issue shows the affected URLs and the information needed to investigate and fix it, making the report easy to hand off to developers or use in client work.

Advanced rendering and crawl efficiency

Identify rendering, crawlability, and sitemap problems that can prevent search engines from efficiently discovering and processing your important pages.

JavaScript rendering and mobile-first indexing

Search bots often struggle to execute complex client side JavaScript. If important content or internal links depend heavily on JavaScript rendering, search engines may have difficulty accessing or processing them correctly. Our deep scan helps identify rendering issues that can affect crawlability and indexation.

Furthermore with mobile first indexing unoptimized mobile layouts and poor Core Web Vitals directly sabotage your organic rankings. Our deep scan identifies rendering bottlenecks that prevent search bots from seeing your actual content.

Faceted navigation and sitemap integrity

Large content sites frequently suffer from dynamic URL parameters generating thousands of duplicate pages. This faceted navigation creates spider traps that burn through your allocated crawl budget before bots even reach your priority pages.

Our auditor cross references your XML sitemaps against live URLs to identify these architectural flaws. Eliminate crawler dead ends and ensure search engines focus exclusively on your canonical high value content.

Deep dive: How our technical SEO checker tool works

Advanced architecture for enterprise-level technical analysis.

HTTP headers and crawl budget

Our parser connects directly to your server to analyze raw HTTP headers before rendering the DOM. It identifies heavy payloads and slow server response times (TTFB) that burn through your crawl budget. We detect 4xx and 5xx status codes instantly, allowing you to plug crawl leaks and force search engines to focus on your money pages.

Redirect chains and canonicals

Infinite 301 redirect loops destroy link equity. The scanner traces every redirect hop to its final destination, mapping out complex chains. It simultaneously validates canonical tags across your entire site structure, ensuring that your canonical URLs match your XML sitemap declarations to prevent indexation of duplicate content.

Robots.txt and meta directives

A single misplaced noindex tag can wipe out your organic traffic. SeLinkPro cross-references your robots.txt allow/disallow rules with on-page meta robots directives and X-Robots-Tag HTTP headers. The tool highlights conflicting instructions that confuse search engine bots and block crucial sections of your website from being indexed.

Technical SEO audit checklist

A complete technical SEO audit should examine more than individual page elements. It should evaluate how pages are discovered, crawled, redirected, rendered, indexed, and connected to the rest of the website.

SeLinkPro combines page level checks with sitewide crawl data, allowing you to see individual errors as well as structural patterns affecting multiple URLs.

The audit can help identify broken pages, server errors, redirect chains, canonical problems, missing metadata, indexability issues, sitemap inconsistencies, internal linking problems, orphan pages, rendering issues, duplicate pages, and other technical SEO problems.

Frequently asked questions

AI crawlers and search systems can be affected by server errors, slow responses, and inefficient redirect chains. A technically clean website makes it easier for crawlers to access the pages you want discovered and processed.
A technical audit ensures Google can crawl and index your site without issues. If your site has broken links, redirect chains, or server errors, you're effectively paying for backlinks that lead to nowhere, wasting your budget and lowering rankings.
Yes. SeLinkPro identifies render-blocking resources and checks if essential content is accessible to search engines, helping you avoid indexing "blank" pages.
We recommend running a full crawl once a month for small sites and weekly for large e-commerce platforms to catch technical debt before it impacts your SERP positions.
Absolutely. The scanner detects both exact duplicates (via content hashes) and near-duplicates (via semantic analysis), allowing you to fix cannibalization issues.
By identifying and fixing redirect chains, 404 pages, and orphan pages. Our tool shows you exactly where crawlers get stuck so you can prune unnecessary pages and guide bots toward your high-priority content.
Your sitemap is a roadmap for search engines. If it contains broken links or non-canonical URLs, Google wastes time crawling low-value pages. SeLinkPro validates your sitemap against live data to ensure perfect synchronization.
An orphan page has no internal links pointing to it. Search engines might never discover it, and users will never reach it. Our tool visualizes your link architecture so you can integrate these pages back into your site.
Yes, our Link Matrix module calculates PageRank flow and semantic relevance, allowing you to build a structure that boosts your top-performing pages and distributes link equity effectively.
AI search systems can use website structure, accessible content, and structured data to better understand pages and entities. Our crawler checks these technical elements so you can identify problems that may interfere with how your site is processed.
The technical SEO checker scans your pages exactly like search engine bots do. It evaluates HTTP responses, redirect chains, and robots directives to ensure there are no technical barriers preventing your site from ranking.

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Reverse engineer top SERP rankings and compare 50+ on-page SEO metrics to outrank competitors.

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Build a robust site structure, eliminate orphan pages, and simulate PageRank distribution.

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SEO content generator

Parse live Google SERPs, extract LSI entities, and write highly relevant articles.

Find technical SEO problems before they cost you organic traffic

Run a deep technical SEO audit, identify indexation blockers and site errors, and get actionable reports without committing to an expensive monthly SEO subscription.