Check canonical tags, meta robots, X-Robots-Tag, and indexability signals to ensure search engines can find your pages.
The Canonical & Indexability Checker reads a page's canonical tag, meta robots directive, X-Robots-Tag header, HTTP status, and hreflang tags and tells you in one verdict whether Google will index it. A canonical tag names the preferred version of a page so duplicate URLs (with tracking parameters, www/non-www, trailing slashes) consolidate their ranking signals instead of competing. The most common indexing bugs it catches are a noindex directive left over from staging, a canonical that points to a different URL than the page you're on (telling Google to index something else), and contradictions like a page that is both canonicalized to itself and marked noindex. Run it before launch and whenever a page mysteriously won't appear in search.
150+ Free Tools No Signup Required JSON / CSV / Excel 30 Uses / Day
Quick answer
The Canonical & Indexability Checker reads a page's canonical tag, meta robots directive, X-Robots-Tag header, HTTP status, and hreflang tags and tells you in one verdict whether Google will index it. A canonical tag names the preferred version of a page so duplicate URLs (with tracking parameters, www/non-www, trailing slashes) consolidate their ranking signals instead of competing. The most common indexing bugs it catches are a noindex directive left over from staging, a canonical that points to a different URL than the page you're on (telling Google to index something else), and contradictions like a page that is both canonicalized to itself and marked noindex. Run it before launch and whenever a page mysteriously won't appear in search.
What is Canonical & Indexability Checker?
The Canonical & Indexability Checker determines whether search engines can and will index a page correctly by inspecting every signal that controls it: the rel=canonical link, the meta robots tag, the X-Robots-Tag HTTP header, the page's HTTP status, and any hreflang annotations. It then delivers a plain-language verdict — fully indexable, indexable with warnings, or blocked — so you don't have to cross-reference five different signals by hand. Because a single conflicting directive (like a canonical pointing elsewhere or a stray noindex) can silently keep a page out of Google, this tool is the fastest way to answer 'why isn't this page ranking?'
How to use Canonical & Indexability Checker
1
Enter the page URL
Paste the URL you want to audit. The tool fetches both the HTTP response headers and the HTML head so it can read server-side and page-level directives together.
2
Read the indexability verdict
Start with the top-line result: fully indexable, indexable with warnings, or not indexable. A 'not indexable' verdict means a noindex or blocking status is actively keeping the page out of search.
3
Check the canonical match
Confirm the canonical URL matches the page you tested (self-referencing). If it points to a different URL, the page is deferring its ranking to that other URL — intentional for duplicates, a bug for a page you want indexed on its own.
4
Resolve conflicts and re-check
Fix any contradiction — remove a stray noindex, correct a mispointed canonical, align hreflang pairs — deploy the change, and run the check again to confirm the verdict turns fully indexable.
Try it when you need to…
Try it when a page has been live for weeks but still won't show up in Google and you need to rule out a blocking directive
Try it before publishing a new page to confirm it is indexable and canonicalized to itself
Try it when duplicate URLs are competing in search and you want to verify they all canonicalize to one preferred version
Use cases
Diagnose why a published page never appears in Google by checking for an accidental noindex in the meta robots tag or X-Robots-Tag header
Verify before launch that new pages are fully indexable and carry a correct self-referencing canonical
Consolidate duplicate content by confirming that parameterized or alternate URLs canonicalize to the single preferred version
Audit an international site to confirm hreflang tags correctly map language and region variants to each other
Check after a migration that redirected and reworked pages still send consistent, non-contradictory indexing signals
Key features
✓rel=canonical detection with verification of whether it matches the current URL (self-referencing) or points elsewhere
✓Meta robots parsing for noindex, nofollow, and other directives
✓X-Robots-Tag HTTP header analysis, which can carry the same directives at the server level
✓HTTP status check to confirm the page returns a healthy 200 rather than a 4xx or 5xx
✓Hreflang tag detection for multilingual and multi-regional pages, plus a clear final indexability verdict
Tips & best practices
Never combine noindex with a canonical to another page. The signals contradict each other — noindex says 'drop this page' while canonical says 'consolidate it into that one' — and Google may ignore both or handle it unpredictably. Pick one intent.
A canonical tag is a hint, not a command. If the canonical target has very different content, or the page is also in your sitemap and internally linked as primary, Google can choose to ignore the canonical and index the page anyway.
The X-Robots-Tag header can carry a noindex that never appears in the HTML, so a page can look fine in the source yet be blocked at the server level. Always check headers, not just the meta tag — this tool does both.
hreflang tags must be reciprocal: if the English page points to the German page, the German page must point back. A one-way hreflang is treated as invalid and ignored, so verify both directions exist.
Frequently asked questions
It means the URL declared in the <link rel="canonical"> tag is the same as the page you tested — a self-referencing canonical, which is the healthy default for a page you want indexed on its own. A mismatch means the page is telling search engines to index a different URL instead and to pass this page's ranking signals there. That's correct for duplicate or parameterized pages but a serious bug on a page you want to rank independently.
It solves duplicate content. When the same or very similar content is reachable at multiple URLs — with tracking parameters, http vs https, www vs non-www, or trailing slashes — a canonical tag names the single preferred version so Google consolidates all their ranking signals onto it instead of splitting authority or picking a version at random. Without it, duplicates compete with each other and dilute your rankings.
The most common hidden causes are a noindex directive (in the meta robots tag or, easy to miss, in the X-Robots-Tag HTTP header), a canonical pointing to a different URL, a non-200 HTTP status, or being blocked in robots.txt. This tool checks the first three directly. If all pass, the page is technically indexable and the issue is likely crawl discovery, thin content, or simply that Google hasn't gotten to it yet.
Yes. The tool separates blocking problems from non-blocking ones. A noindex or an error status blocks indexing outright and produces a 'not indexable' verdict. A missing canonical, a missing meta description, or an incomplete hreflang set doesn't stop indexing but weakens SEO, so it surfaces as a warning. The distinction tells you what's urgent versus what's an improvement.
They do the same job — control indexing and crawling with directives like noindex and nofollow — but at different layers. The meta robots tag lives in the page's HTML head, while the X-Robots-Tag is set in the HTTP response headers by the server. The header version is useful for non-HTML files like PDFs and images, but it's also easy to overlook because it isn't in the page source. This checker reads both so a header-level noindex can't hide from you.
No, and the distinction trips people up. A robots.txt Disallow blocks crawling, so Google can't read the page's content or even see its noindex tag, yet it can still index the URL as a bare link if others link to it. A meta noindex, by contrast, requires the page to be crawlable so Google can read the directive and then keep it out of the index. If you want a page truly gone from search, allow crawling and use noindex — don't block it in robots.txt.
It reads the server-rendered HTML and the HTTP headers, which is what most crawlers process first and most reliably. If your canonical or robots tag is injected client-side by JavaScript, Google may or may not pick it up depending on its rendering pass, and other crawlers often won't. Because that's a genuine risk, the safest practice — reflected by what this tool checks — is to output canonical and indexability directives server-side in the initial HTML.