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Pre-publish SEO & readability checker

Paste your draft before it goes on a site without Yoast. Track a focus keyphrase plus two related keyphrases, each with a synonym. Checks follow Yoast’s SEO and readability analyses and update as you type. Nothing leaves your browser.

Aim for 400–600 px
Aim for 120–156 characters

Test your content with a free Yoast SEO checker

Publishing on a site without the plugin? This Yoast SEO checker scores your keyphrase, title, meta description and readability in seconds. Paste your draft, fix the red and orange items, then publish with confidence.

What the Yoast SEO checker tests

SEO analysis

Checks how well your page is optimized for its focus keyphrase.

  • Keyphrase in the intro, title, slug and subheadings
  • Keyphrase density and distribution
  • Title width and meta description length
  • Text length, images and links

Readability analysis

Shows whether your text is easy to read and follow.

  • Flesch reading ease score
  • Sentence and paragraph length
  • Passive voice and transition words
  • Subheading distribution

Live search preview

See how your title and description may look in Google results, with pixel and character counters that turn green when you hit the target.

How to use the Yoast SEO checker

  1. Set a keyphraseEnter the word or phrase you want the page to rank for.
  2. Add your detailsFill in the SEO title, meta description and URL slug.
  3. Paste your contentUse HTML or plain text with headings and links.
  4. Fix and publishWork through the problems first, then the improvements.

Yoast SEO checker FAQ

Do I need the Yoast plugin to use this tool?

No. The tool runs in your browser, so you can check content for any website, whatever CMS it uses.

Will my scores match the Yoast plugin exactly?

They follow the same ideas and thresholds, but this is an independent approximation. Expect similar results, not identical ones. It is built for English text.

Is my content stored or sent anywhere?

No. Everything is analyzed locally in your browser and nothing is uploaded.

Where can I learn more about on-page SEO?

Read our SEO writing tips or the official Google SEO starter guide.

This tool is independent and not affiliated with or endorsed by Yoast. Yoast is a trademark of its respective owner.