Open HTML Online
Preview an HTML file safely and view its source.
Drop a file here
or
Your file stays on your device.
- Preview: Good
- File info: Yes
- Search: Yes
- Editing: Yes
About HTML files
HTML is the language of web pages. Saved pages, email templates and exported reports are often HTML files.
Open Online shows the page in a sandbox where scripts can’t run and nothing is loaded from other servers, next to the highlighted source.
What you can do here
- Preview the page in a sandbox where scripts can’t run
- View and edit the source with syntax highlighting
- Save a copy of the edited file
Limitations
- Scripts are disabled in the preview, so interactive pages may look incomplete.
- Stylesheets, images and fonts from other servers are not loaded.
Privacy
The file is read by your browser and stays on your device. Open Online has no server that could receive it, and nothing is stored once you close the tab. Privacy policy
Common questions
Why does the page look broken?
Scripts, external stylesheets and remote images are blocked. Pages that depend on them can look incomplete.
Is it safe to open an HTML file from an email?
In this viewer, yes: no scripts run and forms can’t send anything.