Privacy policy
Effective Viewport runs in your browser. This page explains what leaves your machine and what does not.
URLs you preview
When you type a URL into a preview field, it loads directly in iframes in your browser. We do not receive that URL on our servers — there is no server-side fetch or proxy. The URL may appear in your address bar so you can bookmark or share the view.
Measurement submissions
If you use Measure & contribute, you can send a viewport capture for review. The submission includes technical details such as user agent, viewport dimensions, device pixel ratio, screen size, and a client-generated timestamp. Submissions are opened as GitHub issues for maintainer triage — they are not automatically published on the site. Do not send data you are not comfortable sharing.
Site analytics
The site uses a lightweight, privacy-friendly analytics script for aggregate traffic, such as page views. It is separate from preview loading and does not receive the URLs you type into preview fields.
Contact
Questions about this policy: hello@petrvocelka.com.