Add HTML Viewer
Install HTML Viewer from Microsoft AppSource and place it on your slide or worksheet.
Deliver Remarkable Presentations
with Interactive HTML in PowerPoint
Bring interactive dashboards and tools directly into PowerPoint. Our add-in is secure by design and never uploads your code or presentation to external servers.
Most Work Is Forgettable, Presentations Are Not
You've built something worth showing. Your audience should see it work without a break in the presentation.
- Don't flatten your ideas. A screenshot loses the buttons, animations, and interactions you built.
- Don't interrupt your delivery. Opening a separate HTML file pulls attention away from your message.
- Don't lose the chance to impress. Let colleagues see your dashboard or prototype in action.
HTML Viewer 365
Add interactive HTML to your PowerPoint slides or Excel workbooks.
- Make your ideas easier to understand. Show a working dashboard, prototype, or tool instead of explaining a screenshot.
- Present without interruptions. Your interactive content stays in the deck, so you can use it without finding files or switching apps.
- Secure by design. Our add-in never uploads your code or presentation to external servers.
How Does HTML Viewer 365 Work?
Paste Your HTML
Paste your self-contained HTML, CSS, and JavaScript, then save to see the result.
Save Your File
Save your presentation or workbook to keep the HTML ready for next time.
Frequently Asked Questions
Which Office apps does HTML Viewer support?
HTML Viewer 365 is a content add-in for PowerPoint and Excel.
Can I use CSS and JavaScript?
Yes. Paste self-contained HTML with embedded CSS and JavaScript. HTML Viewer renders scripts inside a sandboxed frame.
How large can my source be?
HTML Viewer accepts up to 5 MB of HTML, CSS, and JavaScript source.
Does the source stay with the document?
Yes. The add-in saves the source in the presentation or workbook, so reopening the same file restores it.
Can external code or assets contact other services?
Yes. External scripts, images, styles, and other resources can contact third-party services directly. Only use code and resources you trust.
How does HTML Viewer 365 handle my data?
Our add-in renders your code locally and never uploads your code or presentation to external servers. The add-in saves the source in the Office file and renders it in a sandboxed frame. External code and resources can contact third parties directly. Read our privacy policy for full details. Need more information or have special requirements? Contact support and we'll help.
Is there a free trial?
Yes. Start with a free trial so you can test your own HTML before subscribing.
What is the refund policy?
All plans come with a 60-day full refund guarantee. Cancel anytime from your dashboard, or contact us within 60 days for a full refund.
What is included in every paid plan?
Every paid plan includes HTML, CSS, and JavaScript editing, sandboxed rendering, source and toolbar state saved with each document, a collapsible toolbar, and priority support.
How do I cancel my subscription?
You can cancel anytime from your dashboard under Settings. Click Manage to open the billing portal. You'll keep access until the end of your current billing period.
Can I switch between monthly and annual billing?
Yes. You can switch billing cycles at any time from your dashboard. Annual billing lowers the monthly equivalent right away.
What does the Organization plan include?
Organization is for teams that need tenant-wide access, discounted pricing, admin analytics, and procurement and compliance assistance. Contact support to plan your rollout.