Compare: PixelBlock vs Tracker Blocker: Stop trackers in emails

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Metric	PixelBlock	Tracker Blocker: Stop trackers in emails
User count	40,000	7,000
Average rating	3.72	3.08
Rating count	225	12
Last updated	2025-12-02	2025-12-15
Size	0.07 MB	0.01 MB
Version	2025.12.01	2.0.1

Short description	PixelBlock is a Gmail extension that prevents senders from tracking when you open their emails by blocking tracking pixels.	Block Gmail open-tracking pixels to prevent false opens in campaigns. See a live count of blocked pixels and enjoy Manifest V3 security.
Full summary	PixelBlock is an essential Gmail extension designed to protect your email privacy by blocking tracking pixels commonly used by senders to detect when you open and read their emails. Once PixelBlock detects a tracking attempt within an email, it instantly blocks it and displays a visible 'red eye' icon, informing you of the blocked tracking attempt. This free tool helps maintain your privacy and prevents senders from knowing your email activity, enhancing your control over your personal information. Easy to install and use, PixelBlock seamlessly integrates with Gmail without affecting your overall email experience. This extension is ideal for anyone looking to safeguard their email communications from invasive tracking techniques and maintain greater privacy online.	Tracker Blocker blocks Gmail open-tracking pixels, helping marketers avoid false opens in campaigns when using tools like GMass, YAMM, Mailshake, or Lemlist. Currently focused on GMass pixels, it aims to expand to other platforms over time and uses the latest Chrome Manifest V3 security model. As of the December 2025 update, the extension is back to blocking pixels and now displays a live count of the blocked pixels. It also serves privacy-conscious users who prefer not to have opens tracked by email marketing services, making it a practical privacy tool for Gmail users.