Last updated October 18, 2026

Privacy Policy

Spacing Inspector is a Chrome extension that shows the margin, border, padding and gaps of elements on web pages. It does not collect, sell or share any personal data. Everything it does happens inside your browser.

What the extension does not do

• It does not send any data to the developer or to any third party. It has no servers, no accounts and no analytics or tracking.
• It does not read or store your browsing history, form inputs, passwords, messages or the text of the pages you visit.
• It does not load or run any remote code. All of its code ships inside the extension package.

What it stores, and where

Spacing Inspector uses Chrome’s storage API to remember a few things. This data stays in your browser:

• Your settings (layer colors, units, grid overlay, panel theme and similar preferences) are kept in chrome.storage.sync. If you have Chrome sync turned on, Chrome syncs them between your own devices through your Google account. The developer cannot see them.
• The last element you inspected (a short label such as button.primary and its spacing values) is kept in chrome.storage.local on your device, so the popup can offer to copy it again. The page’s address is not saved.
• Whether the inspector is on in each tab is kept in chrome.storage.session, which Chrome clears when you close the browser.

Removing the extension deletes all of this data.

How it uses page content

When you turn the inspector on, it reads the size, position and computed CSS spacing of the elements you hover, so it can draw overlays and run the Spacing Audit. This happens locally, only on the tab where you turned it on, and none of it leaves your browser. Text is copied to your clipboard only when you press a copy button or shortcut.

Permissions

• activeTab and scripting: to start the inspector on the current tab when you click the icon or press the shortcut, including tabs that were open before the extension was installed.
• storage: to save your settings, as described above.
• Access to websites: the inspector’s script is available on every page so it can start instantly with the keyboard shortcut. It stays idle until you turn it on.

This website

This website (spacinginspector.netlify.app) is separate from the extension. To understand how many people visit and which pages help them, it uses Google Analytics and Google Tag Manager (Google) and Microsoft Clarity (Microsoft). These services may set cookies and collect usage data such as pages viewed, clicks, scrolling, device and browser type and an approximate location based on your IP address; Clarity can also record anonymized sessions of how the page is used. They load only after you interact with the page. See Google’s privacy policy and the Microsoft privacy statement. You can block them with your browser’s tracking protection or an ad blocker; the site and the extension keep working.

None of this applies to the extension: website analytics never see what you inspect or do with Spacing Inspector.

Children

Spacing Inspector is a developer tool and is not directed at children. It collects no personal data from anyone.

Changes

If this policy changes, the new version will be posted on this page with a new date. A change that collects data would also require your consent first.

Contact

Questions about privacy? Use the Support tab on the Chrome Web Store listing.