About
About CodexSEO
CodexSEO is a free technical SEO toolkit: practical guides and in-browser tools for improving one underperforming page at a time.
What CodexSEO is for
The whole toolkit follows one method: pick a single underperforming page, decide the next useful action for the reader, ship one focused improvement, and measure whether readers continue. The guides explain the workflow; the tools turn it into a worksheet, checklist, brief, share card, or refresh score you can use immediately. Nothing here requires an account, and every tool runs in your browser.
Who builds it
CodexSEO is built and maintained by Sensara. We publish these workflows because the same handful of moves — fixing internal links, matching pages to intent, protecting Core Web Vitals, and refreshing decaying content — drive most durable organic results.
Work with Sensara
If you would rather have these improvements done for you, Sensara works with teams to put the same workflows into practice: technical SEO audits, internal link plans, content refreshes, and measurable page changes shipped on your site. Tell us the one page or problem you want to move and we will reply with a concrete next step.