Keywords Mixer is a free browser-based tool for generating keyword combinations used in SEO research and PPC campaign building. The tool operates entirely client-side, meaning no data is transmitted to external servers during use, which the site presents as a privacy and speed advantage.
Users supply up to three input lists covering prefixes, core keywords, and suffixes. The tool then produces every possible permutation across those lists. As a scale illustration, the site notes that an SEO agency targeting New York can generate more than 87,000 unique keyword combinations from sample input lists. Output formats cover broad match, exact match, phrase match, broad match modifier, and domain name configurations, making results directly usable in Google Ads and Bing AdCenter campaign setup.
Customisation options include selecting concatenation characters such as spaces, dashes, and underscores, applying case conversions across lowercase, uppercase, title case, and sentence case, and choosing specific combination patterns from the three input lists. The site describes several use cases: keyword diversification, long-tail targeting to reduce advertising costs, content creation guidance, and performance tracking. Improved search rankings, competitive advantage through more specific queries, and better user intent alignment are cited as intended outcomes. The tool requires no registration or account creation and is accessible directly from the homepage at no charge.