Many marketing emails and newsletters contain a tiny, invisible 1×1 pixel image known as a tracking pixel. The moment you open the email, this image is downloaded from the sender’s server, secretly notifying the sender that you read the email, exactly when you opened it, and sometimes even revealing your IP address and location. To protect your privacy and block this tracking, you can configure Gmail to stop loading images automatically.
How Email Tracking Pixels Work
Tracking pixels rely entirely on the fact that modern email clients load external images by default. The pixel is hosted on the sender’s web server and given a unique URL tied specifically to your email address. Because the image must be requested from the server to be displayed on your screen, the server records the request. If you block the image from loading, the request is never made, and the tracking pixel completely fails.
How to Disable Automatic Images in Gmail (Desktop)
You can turn off automatic image loading directly from the Gmail settings menu.
- Open Gmail in your web browser.
- Click the Gear icon in the top right corner and select See all settings.
- Ensure you are on the General tab.
- Scroll down to the Images section.
- Select the radio button next to Ask before displaying external images.
- Scroll to the very bottom of the page and click Save Changes.
How to Handle Images in Trusted Emails
Once this setting is active, any new email you open will appear mostly text-based, with broken image placeholders. This successfully blocks the tracking pixels.
If you receive an email from a trusted source, such as a friend or a retail receipt you need to see, Gmail will display a banner at the top of the message stating: “Images are not displayed.” You can safely click Display images below to load them for that specific email only.
If it is a sender you trust permanently, you can click Always display images from [Sender] to automatically whitelist their address in the future.