Don't trust us. Check.

"Your files never leave this device" is a claim every app makes and almost none lets you verify. This one you can falsify yourself, from your own browser, in about five minutes. Here's the exact procedure — if any step fails, we're lying, and you should say so loudly and publicly.

1 · Watch the network

2 · Pull the plug

3 · Read the policy the browser enforces

Promises can be broken by a code change you'd never notice. So the no-egress rule is also declared as a Content-Security-Policy — an instruction the browser enforces against us. This page ships under exactly this policy (check the response headers in the Network tab, or view source):

default-src 'none'; script-src 'self'; style-src 'self'; img-src 'self' data:; font-src 'self'; connect-src 'self'; worker-src 'self'; manifest-src 'self'; base-uri 'none'; form-action 'none'

connect-src 'self' means your browser will refuse any attempt by this page to contact another server — even if a malicious update tried. form-action 'none' means nothing here can even submit a form. The policy is public, machine-checked on every load, and any weakening of it would be visible in this exact spot.

4 · Read the source

Why this beats a privacy policy

A privacy policy describes intentions. An architecture describes capabilities. A dishonest version of this app would have to show requests in your network tab, break in airplane mode, or ship a weaker CSP — all three are checkable in minutes, by anyone, forever. That's the deal: don't believe us, audit us.

Open the analyzer