Privacy Policy — Responsive Grid Overlay

Last updated: August 16, 2026

Summary

Responsive Grid Overlay does not collect, transmit, or sell any personal data. All data created by the extension stays stored locally on your machine, via Chrome's chrome.storage.local API, and is never sent to any external server.

Data stored locally

The extension only stores, in chrome.storage.local (local to your machine, not synced):

• Per-site grid configuration (siteConfigs): hostname of the visited site (e.g. example.com) paired with grid settings (columns, margins, gutters, colors, opacity, enabled/disabled).
• Presets (presets): named grid configurations saved by the user, reusable across multiple sites.
• Default configuration (defaultConfig): settings applied to sites with no existing configuration.

None of this data constitutes personally identifiable information: it is limited to hostnames of visited sites and grid display preferences.

What the extension does not do

• Does not collect any browsing data, history, page content, or user input.
• Does not use any analytics, tracking, or advertising service.
• Does not send any data to a remote server: the extension runs entirely locally.
• Does not sell, rent, or share any data with third parties.
• Does not read or modify page content beyond adding a visual overlay (grid) rendered inside an isolated Shadow DOM.

Permissions used and justification

Permission	Usage
storage	Save/read grid configuration locally (chrome.storage.local).
scripting	Inject the overlay script into an already-open tab before the extension is installed/reloaded (fallback; the content script normally runs automatically).
host_permissions (http://*/*, https://*/*)	Let the grid render and remember its settings on any visited website, without per-site manual setup.

These permissions are used solely to make the grid overlay and its persistence work; they are not used to collect or transmit data.

Uninstalling

Uninstalling the extension automatically removes all locally stored data (chrome.storage.local), per Chrome's standard behavior.

Changes to this policy

This policy may be updated as the extension's features evolve. The last-updated date is shown at the top of this document.

Contact

For any question about this privacy policy, get in touch with contact@ravorona.com