JsonifyTools

    HTML Viewer

    Preview, format, and visualize your HTML code with live rendering

    HTML Input

    Live preview will appear here

    Paste HTML to see live preview•Switch between Preview and Code view

    What is an HTML Viewer?

    An HTML Viewer is a developer tool that allows you to preview and visualize HTML code exactly as it would appear in a web browser. Instead of opening files locally, developers can paste HTML code and instantly see a live rendered output alongside the source.

    How to Preview HTML Code Online

    This online HTML viewer lets you paste raw HTML code and see a real-time preview. It is especially useful for debugging layouts, testing markup, and validating UI changes quickly.

    Example: HTML Preview

    <!DOCTYPE html>
<html>
  <head>
    <title>Sample Page</title>
  </head>
  <body>
    <h1>Hello World</h1>
    <p>This is a simple HTML preview example.</p>
  </body>
</html>

    Common Use Cases for an HTML Viewer

    • Previewing HTML snippets from APIs or CMS systems
    • Debugging layout or rendering issues
    • Testing email templates and markup
    • Formatting and reviewing HTML code
    • Learning and experimenting with HTML

    Why Developers Use This HTML Viewer

    • Live preview without page reload
    • Side-by-side source and rendered output
    • Clean and distraction-free interface
    • No installation or setup required
    • Ideal for frontend and full-stack developers

    HTML Viewer vs Browser Preview

    Unlike opening HTML files directly in a browser, this HTML viewer provides a controlled environment where you can quickly format, test, and iterate on markup without managing files, servers, or refresh cycles.