XMM17879829028 HTML Viewer with Two-Way Highlight (For Beginners)
Overview
This is a free online HTML viewer, HTML runner, HTML test and HTML preview tool built for HTML beginners. The core feature is real-time two-way code-element highlighting, which helps learners understand the relationship between code and rendered UI quickly and intuitively.
Key Features
- Two-way highlight: Click code to highlight the corresponding element in the preview. Click any element to jump to its source code.
- Instant HTML preview & run: Paste HTML code and see the result immediately as a real HTML runner.
- Simple & clean UI: No ads, no login, no installation.
- Lightweight & fast: Pure static website, works on any browser.
Ideal For
- HTML beginners learning tags and layout
- Quick HTML test and debugging
- Teaching HTML code-structure relationships
- Online HTML preview without local environment
How to Use
- Open https://html-viewer.org
- Paste or type your HTML code in the editor
- The preview shows instantly as an HTML previewer
- Click code on the left → element highlights on the right
- Click element on the right → code highlights on the left
Example
<!DOCTYPE html>
<html>
<head>
<title>Demo</title>
</head>
<body>
<h1>Hello HTML</h1>
<div>This box will highlight when clicked</div>
</body>
</html>