View HTML Files Online
-- No Server, No Install

Double-clicking an HTML file often produces a broken result -- missing styles, blocked fonts, dead JavaScript. The browser's file:// protocol enforces strict security policies that prevent external CSS, JS, and fonts from loading. The fix is to serve the file over HTTP.

html.to handles this instantly. Drop a file or paste the code, and it renders over HTTPS in seconds -- no Node.js server, no VS Code Live Server, no setup.

Two ways to open HTML online

Option 1 -- Drag and drop

Drag your .html file onto the html.to page. It loads immediately and renders in the preview pane on the right.

Option 2 -- Paste code

Copy your HTML code and paste it into the code area. This works directly with output from ChatGPT, Claude, Gemini, and any other AI tool.

Why HTML files often break when opened locally

When a browser opens a file via file://, it restricts:

• External CDN requests for CSS, JS, and fonts (CORS)
• fetch() and XMLHttpRequest API calls
• Cross-file resource references in some browsers

html.to serves everything over https:// in an iframe, so none of these restrictions apply.

FAQ

Does the free online HTML viewer support CSS and JavaScript?

Yes. html.to renders complete HTML pages including external CSS libraries, Google Fonts, and JavaScript. Interactive elements like buttons and forms work in the preview.

Is the HTML code stored when I preview it?

No. Until you click SHARE, nothing is sent to a server. The preview runs entirely in your browser session. Clicking SHARE is the only action that stores the code.

What is the best free HTML viewer online?

html.to is a free online HTML viewer that supports drag-and-drop, code paste, and shareable link generation. It requires no account or installation and renders complete HTML/CSS/JavaScript pages.