How do I use the on-page SEO checker?
- Enter the page URL and an optional target keyword.
- Press Check page SEO.
- Work through the “Fix” items, then check again.
What this checker looks at
Title and meta description, heading structure, canonical and robots tags, the html lang attribute, image alt text, structured data types, internal and external links, content length, redirects and — if you add one — where your keyword appears.
On-page SEO checker: frequently asked questions
How long should a title tag be?
Roughly 50–60 characters so it is not cut off in Google, with the main keyword near the start.
How long should a meta description be?
About 120–160 characters. Google may rewrite it, but a good one improves clicks.
Should a page have only one H1?
One clear H1 that matches the page topic is best practice, with H2s and H3s for sections.
What is a canonical tag?
A tag that tells search engines the preferred URL for a page, avoiding duplicate content.
Why does alt text matter?
It describes images for screen readers and helps search engines understand them.
Does this check page speed?
No. Use Google PageSpeed Insights for Core Web Vitals; see our guide to speeding up your site.
Why is my score low but I rank well?
This checks on-page basics only. Rankings also depend on content quality, links and many other signals.
Can it check pages built with JavaScript?
It reads the HTML the server sends. If content is rendered only in the browser, it may be missing here — and possibly for some crawlers too.
Will this tool improve my rankings?
It helps you find and fix issues. Rankings depend on content, technical health and authority together; our SEO team can help with the rest.
Is the on-page seo checker free?
Yes. It is free with no sign-up and no usage limits for normal use.