Google Search itself has no built-in way to check a page's SEO signals or see keyword search volume next to your results. Two extensions add that layer: one audits pages you visit, the other overlays keyword data on the search results themselves.
Audit any page's on-page SEO
The Detailed SEO Extension checks a page's title tag, meta description, headings, canonical tag and links, then flags common issues, all in a single click from the toolbar. It works on any page, not just your own site, which makes it useful for checking competitors ranking above you in Google Search.
See keyword search volume in your results
Keywords Everywhere overlays monthly search volume, CPC and competition data next to Google Search results and related searches, useful for judging whether a keyword is worth targeting before writing content. It is a paid tool that uses prepaid credits rather than a subscription.
Translate search results in another language
Chrome's built-in translate feature can translate a foreign-language result page automatically when you open it, without needing a separate extension for most cases. Dedicated translation extensions add value mainly when you need extra language pairs or a persistent translate button in the toolbar.