Free rendered page preview tool for JavaScript SEO

Check whether important SEO content appears in the initial HTML or only after JavaScript runs. This rendered HTML preview compares source HTML with the rendered DOM, shows the browser screenshot, and keeps the result available through a shareable hashed URL.

Rendered HTML preview
See the page after a real browser loads JavaScript, applies layout, and exposes the final DOM. This helps diagnose client-rendered content that is missing from raw source HTML.
Raw HTML vs rendered DOM
Compare title, meta description, canonical, robots directives, headings, schema, links, images, language, visible text and DOM size before and after rendering.
GSC-style render check
Use it as a quick URL inspection companion when you need a browser-rendered screenshot, a custom viewport, and a stable hashed result link for teammates or clients.

JavaScript SEO render test for public URLs

Search engines can process JavaScript, but SEO problems still happen when critical content, links, canonicals, robots tags or structured data change after hydration. This free render preview shows both versions side by side so you can spot mismatches quickly.

The submitted URL is stored in the result link as an encrypted hash parameter, not as plain text. Screenshots are saved temporarily in S3 and are cleaned up after 7 days.

When to use a rendered HTML preview

Use this tool when a page depends on JavaScript, a frontend framework, delayed API data, client-side routing or hydration. A browser-rendered preview helps you verify whether Googlebot and other search crawlers can see the same title, headings, product copy, article text, internal links and structured data that users see in the browser.

It is especially useful before requesting indexing, after a redesign, during a technical SEO audit, or when Google Search Console URL Inspection shows a rendered page that looks different from the source HTML. The tool is not a replacement for Search Console, but it gives you a fast independent render check with a screenshot and a stable shareable URL.

What the report checks

  • HTML title and meta description before and after render.
  • Canonical URL, robots directives and HTML language.
  • H1 and H2 headings used for page topic and structure.
  • Visible body text that supports search intent and rankings.
  • Internal and external links discovered in the rendered DOM.
  • Images and image alt text available after JavaScript execution.
  • JSON-LD schema types and structured data visibility.
  • DOM size changes that can point to hydration or rendering issues.

How to interpret raw HTML vs rendered DOM

If important content exists in raw HTML and remains stable after rendering, the page is usually easier for crawlers to understand. If the rendered DOM adds the main text, changes the canonical, removes links, replaces headings or injects schema late, review whether those changes are intentional and indexable.

For SEO-critical pages, the safest pattern is to keep the main topic, title, meta description, primary heading, important links and meaningful text available without relying only on delayed JavaScript. The screenshot and viewport controls help confirm what users and crawlers may see on desktop and mobile layouts.