DemoAlias — Record SaaS demos without exposing real data

What it does

Built for sales engineers, educators, and PMs.

Click Replace once. DemoAlias walks the DOM, finds every sensitive value, and swaps it in place — so screen recordings stay coherent end-to-end.

Ten detector types

Emails, phones, money amounts, Stripe-style IDs, API tokens, company names, IPs, Luhn-validated cards, domains, URLs.

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Consistent mapping

The same real value always maps to the same demo value across a session — recordings look believable.

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Two output styles

Realistic uses themed pools of ~20 entries per type. Masked emits obvious •••• 1@••••••.com placeholders.

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Per-site Save

Save once and the site auto-applies on next visit — including SPA route changes in Notion, Linear, Gmail, and friends.

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Click to exclude

See a false positive? Click the highlight on the page to opt that value out — the popup syncs instantly.

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Keyboard-first

Alt+Shift+R toggles replace/restore on the current page. Alt+Shift+D opens the popup.

Privacy

Private by design. Not by promise.

DemoAlias never makes a network call. The mapping is stored only as a non-reversible hash, so even chrome.storage never holds the real value.

No telemetry Zero analytics, zero tracking, zero remote logging.

No network The extension makes no fetch / XHR / WS calls — ever.

Hashed mapping Real sensitive values never touch chrome.storage.

Open source MIT licensed. Read every line on GitHub.

When you'd use it

For any screen that's about to be shared.

Anywhere blur looks distracting and manual edits don't scale.

Sales demos over Zoom or in person

Loom recordings for prospects

Course screenshots and tutorials

Support tickets with vendor screenshots

Conference talks showing real workflows

Internal docs reused across teams

Record SaaS demos.
Without exposing real data.

Real data on the page

What your viewers see