Keyword Popularity Checker

The Keyword Popularity Checker is a PHP-based SaaS tool that analyzes any given website to extract its most prominent keyword and simulate its traffic popularity. By fetching and cleaning a site's HTML, it identifies frequently used keywords and provides an estimated popularity metric. Modeled after advanced tools like SpyFu and SEMRush, this lightweight demo is perfect for developers and marketers looking to integrate basic SEO insights into their platforms.

Features include:

• URL validation and content fetching via cURL
• HTML noise reduction and word frequency analysis
• Simulated API integration for keyword traffic metrics
• Easy customization for advanced crawling, caching, and error handling