HTML Viewer
Run and preview HTML code online.
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Free HTML Viewer and Live Preview Tool
Preview HTML and HTML5 snippets in the browser so you can test rendered markup, layout ideas and small frontend experiments quickly.
What is an HTML Viewer?
An HTML viewer renders HTML and HTML5 markup so developers can see how a snippet appears in the browser. It is useful for quick checks before adding code to a real project.
Use it for small examples, documentation snippets, email fragments, learning exercises and frontend troubleshooting. For production pages, always test inside the real application too.
Key Features
Live Preview
View rendered HTML5 output without creating a separate project.
Snippet Testing
Try small markup ideas quickly.
Debug Output
Confirm whether copied HTML displays as expected.
Learning Friendly
Understand how tags and attributes affect rendered output.
Common Use Cases
How to Use This Tool
- 1 Paste HTML into the editor.
- 2 Run or preview the snippet.
- 3 Inspect the rendered output.
- 4 Adjust markup and preview again as needed.
Frequently Asked Questions
Can this replace a full browser test?
No. It is helpful for snippets, but full pages should be tested in the real application and target browsers.
Can I use CSS with HTML?
If the tool supports inline styles or style tags, simple styling can be previewed with the markup.
Should I paste third-party scripts?
Be careful with unknown scripts and avoid running untrusted code.