What does this tool check?
Enter a URL above and the tool will fetch the page and check its title tag, meta description, canonical URL, robots directives, viewport, character encoding, language and favicon – flagging anything missing or likely to cause SEO problems. It also checks the page content (H1, heading structure, word count and image alt text) and looks for Open Graph, X card, hreflang and structured data tags.
Can I test a new title or description?
Yes. Under the Google preview, edit the title and description and the preview updates as you type. The counters show the width in pixels. When you are happy with the wording, press Copy HTML to copy the tags and paste them into your page.
Why does title and description length matter?
Search engines truncate titles and descriptions that are too long, and pages with no title or description at all tend to rank and click through worse. Google cuts text by width, not by character count. A title of about 600 pixels and a description of about 920 pixels on desktop (680 on mobile) usually show in full. In characters, that is roughly 50–60 for a title and 120–160 for a description. The pixel figures are close estimates, because Google can change them.
What is a canonical URL?
A canonical tag tells search engines which version of a page is the "main" one when the same content is reachable at more than one URL (with or without tracking parameters, for example). Without one, search engines have to guess, which can split ranking signals across duplicate pages.
What does a meta robots tag do?
<meta name="robots"> tells search engines whether to index a page and whether to follow its links. A value of noindex means the page won't appear in search results at all, so it's worth double-checking this hasn't been left on by accident.
Are meta keywords still used?
No. All major search engines have ignored the meta keywords tag for years, so its presence or absence has no effect on rankings – it's shown here purely for completeness.
What about how the page looks when it's shared on social media?
That's a separate set of tags. Once your core SEO tags are in good shape, run the same URL through the Open Graph checker to see how it'll appear when shared on X, Facebook or LinkedIn.