Most SEO tools only fetch static HTML. About 30% of websites render content with JavaScript, and then the tools give you wrong data. We fixed it.
When an SEO tool analyzes a website, it typically uses a simple HTTP request to fetch the HTML code. Modern websites built with React, Angular, Vue, or Next.js in client-side mode render content with JavaScript after the HTML loads — the tool sees a nearly empty page and reports "missing H1" when the H1 actually exists.
Each tool first tries a fast static fetch, checks if the HTML looks suspiciously empty, and automatically falls back to full rendering via a real headless Chromium browser (Playwright) when needed. Each report is labeled: Rendered, Static HTML, or External source.
Always real data — never guessing. Always transparent — badges show exactly how data was collected. Always verifiable — customers can see the source of every data point.
Renders: Googlebot, NordicPulse (Playwright), DataForSEO On-Page API. Does NOT render: GPTBot, ClaudeBot, PerplexityBot, Bingbot (limited), and most SEO audit tools.
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