DemoAlias

Replace sensitive live SaaS data with consistent demo-safe values for screenshots and recordings — no blur.

DemoAlias is a Chrome extension for sales demos, product walkthroughs, Loom recordings, and course screenshots — anywhere you need to record a real app without exposing real customer data, and where blur looks distracting. Click Replace once and every email, phone number, money amount, ID, token, company name, IP address, and credit card on the page is swapped for a consistent demo value. Sensitive values stay consistent across the session — the same real email always maps to the same demo email — so recordings look coherent end-to-end. Save a site once and the next visit auto-applies the mapping, including when you navigate inside SPAs (Notion, Linear, Gmail, etc). WHAT IT DETECTS • Email addresses • Phone numbers • Money amounts • IDs (cus_/sub_/acct_/etc Stripe-style prefixes) • API tokens (Stripe, GitHub-style) • Company names • IP addresses • Credit card numbers (Luhn-validated to avoid timestamp false positives) • Domains and URLs (opt-in — higher false-positive rate) TWO OUTPUT STYLES • Realistic — themed pool of ~20 entries per type (alex@northstar-demo.com, $12,480.00, etc). • Masked — visually obvious placeholders (••••1@••••••.com, $••,••0.00). PRIVACY BY DESIGN • Runs entirely in your browser. Zero network calls. • Real sensitive values are never stored — only non-reversible hashes. • No analytics, no telemetry, no third-party scripts. KEYBOARD SHORTCUTS • Alt+Shift+D — open popup • Alt+Shift+R — toggle replace / restore on the current page INTERACT FROM THE PAGE Click a highlighted value on the page to exclude it from replacement (useful when a detector finds a false positive). Click again to re-include. Selections sync between page and popup. PER-SITE PERSISTENCE The Save button persists the current mapping and exclusions for the site so the next time you load it — even after a browser restart — DemoAlias applies it automatically. Forget reverses Save in one click. OPEN SOURCE Source code, issue tracker, and roadmap: https://github.com/flreey/demoalias