HTML Viewer
Paste HTML and watch it render live in a safe sandbox.
Paste some HTML and the rendered page appears here — scripts run in an isolated sandbox.
About the HTML Viewer
An HTML viewer saves the save-and-refresh dance: paste markup and watch it render as a real page, instantly. Whether you are checking an email template, debugging a snippet from a forum, or opening an html file view someone sent you, this HTML viewer online renders the result live in your browser — nothing to install, nothing to upload.
The preview runs inside a sandboxed iframe: scripts execute so you can test interactive pages, but they run in an isolated origin with no access to your CaseWren data, and popups and form submissions are blocked. A line-numbered source view, one-click beautify, copy and .html download round out a viewer that is genuinely pleasant to debug in.
How to use it
- 1Paste your HTML into the input box (or tap Sample for a demo page).
- 2Read the rendered page in the Preview tab — it updates live as you type.
- 3Switch to Source for line-numbered code; press Format to beautify messy markup.
- 4Copy the HTML or download it as a .html file.