Free On-Page SEO Checker & Technical Audit Tool | Sitealyser

Free On-Page SEO Checker & Technical Audit Tool<br>Audit a webpage for technical SEO issues and check keyword targeting across meta tags, headings, copy, images, social metadata, and structured data.

Paste URLCheck Page<br>On-Page SEO & Indexability Checker<br>Analyse on-page SEO factors including titles, headings, copy, links, structured data, and hreflang tags to pinpoint issues and improve search visibility.<br>HTTP Status Response Verification<br>Checks the final HTTP status code to verify whether the page loads successfully (200 OK) or fails due to client/server errors (4xx/5xx).

Robots.txt Crawl Permission Check<br>Audits your robots.txt file to confirm if search engine crawlers are explicitly allowed or disallowed from accessing the final URL.

Meta & X-Robots Directives Analysis<br>Checks directives across both HTML meta tags and HTTP X-Robots-Tag headers to detect blocking rules like noindex or none.

Canonical URL Alignment Audit<br>Determines whether the page is self-referencing, missing a canonical tag, or canonicalised away to a different target URL.

Protocol (HTTP/HTTPS) Checker<br>Check your website's protocol configuration to ensure HTTP redirects to HTTPS, uses permanent redirects, and resolves to the correct final URL.<br>HTTP to HTTPS Redirect Verification<br>Checks whether unencrypted HTTP traffic automatically redirects to HTTPS to ensure user security and consolidate link equity.

Redirect Chain & Hop Detection<br>Monitors total redirect hops and flags setups with excess redirects to help reduce crawl latency and preserve crawl budget.

Final HTTPS Status Code Monitoring<br>Ensures the final HTTPS destination serves a valid 2xx status code rather than resolving to error pages (4xx/5xx) or unresolved redirect loops.

Canonical Endpoint Consistency Check<br>Verifies that both HTTP and HTTPS requests ultimately resolve to the exact same final URL to prevent split signals and duplicate content issues.

SEO-Friendly URL Checker<br>Check whether a page's URL follows SEO best practices by analysing its structure, length, target keyword, hyphens, query parameters, and readability.<br>Target Keyword Placement Analysis<br>Checks whether your target keyword is included in the URL slug (or domain name for root pages) to strengthen relevance signals for search engine indexing.

Uppercase Character Detection<br>Flags capital letters in the URL path to prevent duplicate content risks on case-sensitive web servers.

Word Separator Audit (Hyphens vs. Underscores)<br>Identifies underscore usage and recommends hyphens so search crawlers can accurately parse and recognise individual words.

Whitespace & Encoding Check<br>Detects unencoded spaces or %20 sequences that harm link readability and sharing.

Dynamic Query Parameter Flagging<br>Highlights dynamic parameters (?) in the path and encourages clean, static, hierarchical URL structures for better crawl efficiency.

URL Length Threshold Verification<br>Monitors total string length against a recommended maximum (75 characters) to ensure links remain concise, shareable, and easy to read.

Robots.txt Checker<br>Check your website's robots.txt file to verify it exists, is accessible, and doesn't block search engines from crawling important pages.<br>Root Presence Verification<br>Checks for the existence of the file at the site root to ensure search engine crawlers have clear navigation guidelines.

URL Crawl Permission Testing<br>Tests the target URL against active rules to instantly determine whether search engines are allowed or disallowed from crawling the page.

Precise Rule Line & Directive Tracking<br>Pinpoints the exact line number and directive text in the robots.txt file that triggers a block for faster debugging.

Direct File Path Reference<br>Provides a direct external link to the live robots.txt file for rapid manual inspection.

XML Sitemap Checker<br>Check your website's XML sitemap to verify it exists, is accessible, and includes a page's URL for efficient search engine crawling.<br>Verifies Sitemap Discovery &amp; Access<br>Checks if your root XML sitemap exists and flags HTTP status codes or parsing errors blocking search engines.

Detects XML Syntax Issues<br>Identifies broken XML markup or invalid formatting to ensure search crawlers can read the sitemap.

Confirms URL Inclusion<br>Verifies whether the audited URL is present in a sitemap so search engines can discover it efficiently.

Flags URL &amp; Canonical Mismatches<br>Catches subtle variances like trailing slashes or capitalisation differences between the target page and its sitemap entry.

Extracts Sitemap Metadata<br>Surfaces key metadata tags like last modified dates (lastmod), change frequencies, and priority weights.

Meta Robots & X-Robots-Tag Checker<br>Check a page's HTML meta robots tag and server X-Robots-Tag header to ensure search engines can index its content.<br>Indexability Conflict Flagging<br>Detects critical indexing blocks like noindex or none originating from either the HTML document or HTTP response...