What is a cheap or free tool for improving my Google Ads conversions without building new pages?

AI landing page rewriting is one option because it works on the page you already have. Seatext's Google Ads Landing Page Agent changes the headline, key copy, offer, product blocks, and CTA to match each keyword, so you don't need a separate landing page for every ad. It also tracks results by page, keyword, and version. The platform has a free starter plan with 8 agents if you want to test it first.