No Data Collection
Canopy Ruler does not collect, store, transmit, or share any personal information, browsing history, page content, or usage data. All processing happens locally on your device.
How the Extension Works
What Happens Locally
All inspection, measurement, color picking, font detection, screenshot capture, and page analysis is performed entirely within your browser using standard Chrome Extension APIs. No data leaves your computer.
Side Panel Communication
The floating dock (content script) communicates with the side panel using Chrome's built-in chrome.runtime.sendMessage API. This communication happens within the extension sandbox and is not accessible to websites or external services.
Persistent Storage
The only data stored persistently is your language preference (English or Spanish), saved via chrome.storage.local. This setting stays on your device and is never transmitted anywhere.
Font Downloads
When you download a font file via the WhatFont tool, the extension uses Chrome's Downloads API to fetch the font URL directly. The font file is saved to your default downloads folder. No font data passes through any third-party server.
Screenshots
Screenshots are captured using Chrome's tabs.captureVisibleTab API and saved directly to your device. They are not uploaded or shared.
What Canopy Ruler Does NOT Do
- Does not collect personal information (name, email, location, IP address)
- Does not track your browsing history or page visits
- Does not use cookies or any tracking mechanisms
- Does not send data to external servers or third parties
- Does not include analytics, crash reporting, or telemetry
- Does not inject ads or sponsored content
- Does not modify webpage content (except for element deletion requested by you)
- Does not require account creation or sign-in
Permissions Explained
Canopy Ruler requests the following Chrome permissions for specific functionality:
- scripting / activeTab — to inject the inspector dock and tools into the current page
- contextMenus — to add the "Inspect with Canopy Ruler" right-click option
- commands — to support keyboard shortcuts (Alt+Shift+S, etc.)
- storage — to save your language preference locally
- sidePanel — to display the inspection panel in Chrome's side panel
- downloads — to save screenshots and font files to your device
- clipboardWrite (optional) — to copy CSS and color codes on your request
Third-Party Services
Canopy Ruler does not integrate with or transmit data to any third-party services. The extension is fully self-contained and operates offline.
Open Source
Canopy Ruler is open source under the MIT license. You can inspect, review, and verify every line of code at:
Contact
If you have questions about this privacy policy or the extension, contact:
Gustavo Gutiérrez
Bogotá, Colombia
LinkedIn
Changes to This Policy
This privacy policy may be updated occasionally. Changes will be reflected on this page with an updated effective date. Since no data is collected, policy changes will not affect any previously collected information.