This free content optimizer checks a page or draft against an on-page SEO checklist.
Paste a URL or raw text/HTML and pick a target keyword. The tool scores title length and keyword placement, meta description length, whether your H1/H2s contain the target keyword, keyword density, word count, image usage, internal link count, and Flesch readability — the same on-page checklist an SEO consultant would run through manually.
Most on-page SEO mistakes are avoidable: a title that's too long to display in search results, a meta description that doesn't mention the keyword, thin content that can't compete, or a missing H1. Catching those before you hit publish is faster and cheaper than fixing them after a page has been indexed and ranked (or failed to rank). Add a Gemini API key in your environment and you'll also get an AI-rewritten title, meta description, and top recommendation for each analysis.