TextOptimizer

TextOptimizer, published by Webinfo LTD and built by Landor SAS in Paris, has been used by tens of thousands of webmasters, copywriters and SEO specialists. The idea behind it is simple: rather than stuffing keywords, write text that covers a topic the way search engines model it. You paste in a page or draft, the engine compares it against a semantic profile of the subject, and you get a list of terms to add, terms to trim and questions worth answering.

The tool is available two ways. A Chrome extension (4.6 stars across roughly 46 ratings and more than 20,000 users, last updated in November 2024) sits in your browser and optimizes pages you are already reading or editing. The companion website at textoptimizer.com offers the same engine plus a research view for finding content ideas. Because the workflow is lightweight, a single article can often be optimized in under ten minutes.

The company reports that about 70% of optimized pages ranked higher within five weeks. That figure comes from the vendor, so treat it as a directional claim rather than a guarantee — rankings still depend on your authority, competition and overall content strategy. What TextOptimizer genuinely removes is the guesswork about which terms and questions a well-covering page should include.