How do I share an HTML file online for free?

Upload the file to ShareDuo — you get a public link instantly with no signup. The link works in any browser, on any device. Other free options include Netlify Drop and GitHub Pages.

Do I need an account to share an HTML file?

Not with ShareDuo — it's the only major service that lets you share an HTML file without creating an account. Most other hosts (Netlify, GitHub Pages, tiiny.host) require sign-up.

How long does the share link last?

ShareDuo links last indefinitely by default. You can also set a custom expiry (24 hours, 7 days, 30 days, never) when you upload.

Can I share interactive HTML files (with JavaScript)?

Yes. ShareDuo serves the HTML exactly as written, including JavaScript, CDN-loaded libraries, Google Fonts, and external scripts. Calculators, dashboards, games, and full apps all work.

Share an HTML File Online for Free — No Signup Required

You have an HTML file and you need a public URL for it. Maybe it's a Claude artifact, a prototype, a demo page, or a quick visualization. You don't want to configure a server, set up Netlify, or create another account somewhere.

Here's the fastest way.

Use ShareDuo

Go to shareduo.com. Drop your file. Get a link. Done.

No signup. No configuration. No domain needed. The link is live in under 10 seconds and works in any browser.

Step by step

Open shareduo.com
Drag your .html file onto the drop zone, or paste the HTML directly into the text area
Choose how long the link should stay live: 1 hour, 1 day, 7 days, or 30 days
Optionally add a password if you only want specific people to see it
Click "Upload & share"
Copy the preview link and share it

What you get

A preview link anyone can open — no account, no login
A private manage link so you can check view counts and delete the file later
The artifact runs exactly as written — external scripts, fonts, and libraries all work

What are the common use cases for sharing HTML files?

Claude artifacts — share AI-generated dashboards, games, and tools with people who don't use Claude
HTML prototypes — share a design mockup with a client without deploying anywhere
Demo pages — quick one-off demos for a presentation or sales call
Static reports — share a data report as an interactive HTML page instead of a PDF
Landing page tests — A/B test a copy variation before committing to a deploy

Sharing a Claude artifact specifically? See how to share a Claude artifact with anyone — same approach, with steps tailored to Claude. For context on why Claude's native Publish button doesn't work for everyone, see what Publish Artifact actually does in Claude. For a broader look at sharing options, see the complete guide to Claude artifacts.

What are the limits?

Files up to 5 MB. Links expire automatically based on the window you choose (max 30 days). Free forever, no account required.