Do the Chrome extension and WordPress plugin run the same checks?
Both inspect the same core on-page areas and present clear Pass, Review and Info findings. Chrome audits the active tab after you open the extension. WordPress adds editor, same-site page, list-table, admin-bar and dashboard workflows, plus WordPress-side crawl signals.
Does the Essential SEO Toolkit send my page content to Opace?
No. The audit runs in your browser against the page you choose. Chrome keeps settings locally. WordPress stores compact summary counts for its admin views, not the full report. A page address reaches an independent deeper-check service only when you deliberately open that link.
Does the toolkit give an SEO score?
No. It reports Pass, Review and Info findings with the measured evidence and an explanation of what deserves attention. The checks are review prompts, not ranking guarantees.
Do I need both versions?
No. Choose Chrome to audit the public page in your active tab. Choose WordPress when editors need the audit and saved tools inside the WordPress admin area. You can install both when those workflows serve different members of the same team.
Are both versions free and open source?
Yes. The signed Chrome extension and WordPress plugin are free to install, and their source, licences, release history and issue trackers are public on GitHub.