Whether you are learning HTML, debugging an email template, or checking a snippet before pasting it into WordPress, you need a fast way to see what code actually renders. Our free HTML Viewer gives you a blank canvas: paste any HTML into the editor, hit Preview, and the rendered output appears instantly in a sandboxed frame — no saving files, no uploading, no switching applications.
The preview runs in an isolated iframe with the sandbox attribute, so scripts in your snippet execute but cannot touch the surrounding page — safe for testing code you received from someone else. A second button opens the same markup in a new browser tab for full-screen inspection, and Clear resets the editor in one click. Students, front-end developers and content editors all use it as a scratchpad. It is free forever, requires no account, and your code never leaves your device.
👁️ HTML Viewer
Paste HTML code and preview the rendered output instantly.
How to use
- Paste or type your HTML code into the editor box.
- Click Preview to render the code in the frame below.
- Edit the code and click Preview again to see changes instantly.
- Use Open in New Tab to view the page full-screen in its own tab.
- Click Clear to wipe the editor and the preview.
FAQs
Is it safe to preview HTML I received from someone else?
Yes for this page: the preview renders inside a sandboxed iframe that is isolated from the rest of the site, so embedded scripts cannot read your cookies or alter the tool page. Still, treat unknown code cautiously — “Open in New Tab” runs it in a normal tab.
Can I preview a full HTML document with <html> and <head>?
Yes. You can paste either a fragment or a complete document; the viewer renders whatever you give it, including inline <style> blocks and scripts.
Does the tool save or upload my code?
No. Everything happens locally in your browser. Closing the tab discards the code — if you need to keep it, copy it out before leaving.