RankEngineQuick answer: paste a URL and get one verdict from every on-page signal that can block indexing — status, robots meta, X-Robots-Tag, canonical, redirects and whether there is content in the HTML.
Free tool
Indexability checker — can this URL be indexed?
Five vetoes, any one of which is enough
A URL is eligible for indexing when all of these hold: it answers with a 200, robots.txt permits the crawl, no noindex appears in either the meta tag or the X-Robots-Tag header, its canonical does not nominate a different URL, and there is content in the HTML worth storing.
They are vetoes rather than a score. Four green rows and one red one means not indexable, and the red row is the whole answer.
Eligible is not indexed
This is the distinction that matters most and disappoints most. Passing every check means nothing is blocking the page. It does not mean the page will be stored, because indexing is a judgement about whether it is worth storing relative to everything the engine already has.
A technically flawless page on a domain with few referring domains can sit in discovered, currently not indexed indefinitely. No on-page change moves it. That is an authority problem wearing a technical costume, and recognising which one you have saves weeks.
The two quiet blockers
X-Robots-Tag does not appear in view-source. It is set at the server or CDN and it can apply to a whole path, which is how a directory gets excluded by a rule nobody remembers writing.
A canonical pointing elsewhere blocks nothing and still keeps the page out of results, because you asked the engine to consolidate onto a different URL. Intended behaviour, frequent surprise.
When Search Console disagrees with this tool
Search Console reports the last crawl. This reads the page now. If you removed a noindex an hour ago, the two will disagree for days and this one is right. Request indexing and wait rather than changing anything else.
For the crawl-permission side, the robots.txt tester; for the full on-page picture, the SEO report generator.
Frequently asked questions
What actually decides whether a page can be indexed?
Five things, and any one of them can veto: the URL must answer with a 200 rather than an error or a redirect, robots.txt must allow the crawl, the page must not say noindex in either a meta tag or an X-Robots-Tag header, its canonical must not point at a different URL, and there has to be content in the HTML worth storing. This checks all of them except robots.txt, which has its own tool.
Does passing this mean the page will be indexed?
No. It means nothing is blocking it. Indexing is a decision about whether the page is worth storing, made against everything else the engine already has. An eligible page on a domain with little authority frequently sits in the discovered-not-indexed state indefinitely, and no on-page change fixes that.
Why does Search Console say my page is excluded by noindex when I removed it?
Because the report reflects the last crawl, not the current state. After removing a noindex, request indexing for the URL and expect a lag of days. If this tool says the directive is gone and Search Console still reports it, the page is fine and the report is stale.
Can a canonical stop a page being indexed?
It can stop THAT URL being the indexed one. A canonical pointing elsewhere tells the engine to consolidate onto the target, so the page you checked may never appear even though nothing blocked it. That is the intended behaviour and a common surprise.
Does a redirect make a page unindexable?
The redirected URL is not indexed; its destination is. That is normally what you want. It is only a problem when a URL you meant to be a landing page turns out to redirect, which is worth checking on anything you link to in advertising or email.
What about pages behind a bot challenge?
A challenge page returns its own content and often its own status. If the word count here is tiny and the title looks unfamiliar, you are probably reading the challenge rather than the page, and so is the crawler.
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