Privacy Policy

CSS Selector Lens

Last updated: May 8, 2025

1. Overview

CSS Selector Lens ("the Extension") is a Chrome DevTools extension that generates CSS selector suggestions for HTML elements you inspect in Chrome DevTools. This Privacy Policy explains what data is handled by the Extension, how it is used, and your rights regarding that data.

2. Data We Collect and Store

The only data stored by this Extension is your personal preferences, saved locally on your device using Chrome's built-in chrome.storage.local API. Nothing is ever sent to any server.

The Extension stores the following data:

• Selector depth preference — The maximum DOM nesting depth you configure for selector suggestions (e.g., 2 or 6 levels deep).
• Display preferences — Any other UI or panel settings you configure in the Options page.

No page content, DOM data, URLs, or browsing history is ever stored.

3. How Data Is Collected

Data is only collected through direct user action:

• Manual user settings — Preferences you configure on the Options page are saved locally so your settings persist across browser sessions.

The Extension reads the DOM of pages you are actively inspecting in DevTools solely to generate CSS selector suggestions. This data is processed in memory in real time and is never stored or transmitted.

4. How Data Is Used

All stored data is used exclusively to provide the Extension's core functionality:

• Restoring your preferred selector depth and display settings between browser sessions.

Data is never used for analytics, advertising, profiling, or any purpose beyond directly serving the Extension's functionality.

5. Data Sharing

We do not share, sell, rent, or transfer any data to any third party, ever. All data remains on your local device and is never transmitted over the network.

6. Data Retention and Deletion

Preference data is retained in your browser's local storage until you delete it. You can delete all stored data at any time by:

• Using Chrome's extension management page: chrome://extensions → click Details on CSS Selector Lens → Clear site data
• Uninstalling the Extension, which will remove all associated storage

7. Permissions Justification

The Extension requests the following Chrome permissions:

• storage — Required to save and restore your preferences (e.g., selector depth) locally in your browser using chrome.storage.local. No data is sent to any server.
• clipboardWrite — Required to copy a generated CSS selector to your clipboard when you click it. This action is always explicitly initiated by the user.
• debugger — Required for the DevTools panel to communicate with the Chrome DevTools Protocol in order to identify the element currently selected in the Elements panel. This is the standard, Google-documented method for DevTools extensions. It is used solely to read the selected element's tag, classes, attributes, and position in the DOM — no network traffic is monitored, no pages are modified, and no data is recorded.
• scripting — Required to inject the content script that enables the DevTools panel to inspect the live DOM of the page being developed.

The host permission (<all_urls>) and content script match pattern are broad because developers inspect elements on any website. The content script only responds to messages from the DevTools panel and does not collect, record, or transmit any page data.

8. Children's Privacy

This Extension is designed exclusively for web developers. It is not directed at children under the age of 13 and does not knowingly collect data from children.

9. Changes to This Policy

If this Privacy Policy changes, the updated version will be published at this same URL with a revised "Last updated" date. Continued use of the Extension after a policy change constitutes acceptance of the revised policy.