What do I enter to see the preview?

Write the page URL, meta title and meta description, then click See Preview.

Does it show mobile results too?

Yes. It shows both desktop and mobile previews of how your result will look on Google.

Yes. It shows character counts and SEO length checks for the title and description as you type.

Yes. It is free with no signup and runs in your browser.

See how your result will look on Google before you publish — with both desktop and mobile previews and SEO length checks.

Page URL

Meta Title (0 chars)

Meta Description (0 chars)

Write the page URL, meta title and meta description.
Click See Preview — you will see the Google-style desktop and mobile result.
Keep the title around ~60 characters and the description around ~155 characters in the checks, otherwise Google cuts them (adds …).