To reduce cookie-based tracking, block or partition third-party cookies in your browser, then clear existing cookies and site data. Blocking limits how embedded services can connect your visits across sites; clearing removes identifiers already saved on your device. Neither step makes you anonymous, and some websites may stop working properly when cookies are blocked.
How cookies can track you across websites
A cookie is a small piece of data a website stores in your browser. A site can use it to recognize your browser on a later visit, such as to keep you signed in or remember preferences. See the FTC’s explanation of internet cookies.
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Cross-site tracking can happen when a third party—such as an advertising or analytics service—is embedded on multiple websites. If the browser allows that third party to read the same cookie in those different contexts, it may be able to connect activity across sites. The MDN guide to third-party cookies explains this mechanism and related privacy concerns.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchBlock or partition third-party cookies
Start with the browser’s privacy or cookie controls. Blocking third-party cookies prevents many embedded services from reading or setting those cookies; partitioning keeps a third party’s cookies separated by the site where they were created, limiting their usefulness for linking visits across sites.
#1 Best Overall
- [2 Pack] This product includes 2 pack privacy screen protectors.WORKS FOR iPhone 17e/16e/14/iPhone 13/13 Pro 6.1 Inch tempered glass screen protector.Featuring maximum protection from scratches, scrapes, and bumps.[Not for iPhone 16 6.1 inch, iPhone 13 mini 5.4 inch, iPhone 13 Pro Max/iPhone 14 Pro Max/iPhone 14 Plus 6.7 inch, iPhone 14 Pro 6.1 inch]
- Specialty: to enhance compatibility with most cases, the Tempered glass does not cover the entire screen. HD ultra-clear rounded glass for iPhone 17e/16e/14/iPhone 13/13 Pro is 99.99% touch-screen accurate.
- 99.99% High-definition clear hydrophobic and oleophobic screen coating protects against sweat and oil residue from fingerprints.
- High Privacy: Keeps your personal, private, and sensitive information hidden from strangers,screen is only visible to persons directly in front of screen.Good choose when you are in the bus,elevator,metro or other public occasions.(Note: Due to this privacy cover will darken the image to prevent the peeking eyes near you, you might need to turn your device display brightness up a bit when use it.)
- Online video installation instruction: Easiest Installation - removing dust and aligning it properly before actual installation,enjoy your screen as if it wasn't there.
Chrome on desktop
- Open Settings → Privacy and security → Third-party cookies.
- Choose the available option to block third-party cookies. Chrome’s settings page also documents exceptions for individual sites.
- If a trusted website loses a necessary feature, add an exception for that site rather than disabling protection across the browser.
Chrome’s menus and options can differ on mobile and may change by version; consult Chrome’s current cookie settings help for your device.
Firefox
Firefox’s Enhanced Tracking Protection offers protection levels, and Mozilla describes Total Cookie Protection as placing third-party cookies in a site-specific cookie jar. That separation is designed to stop a tracker from using one shared cookie to connect activity across unrelated sites. See Mozilla’s Total Cookie Protection overview and its Firefox support guide to third-party cookies and tracking protection for current controls and site-specific cookie management.
Rank #2
- Perfect Fit for iPhone 17 Pro Max：Engineered exclusively for iPhone 17 Pro Max with seamless edge-to-edge coverage, ensuring precise alignment and reliable full-screen protection.
- Advanced Privacy Protection：Features a 28° privacy filter with smooth 2.5D curved edges, preventing side glances in public. Your screen remains visible only to you—ideal for commuting, traveling, and crowded environments.
- Effortless Installation：Equipped with an auto dust-elimination tool that delivers a fast, accurate, and bubble-free application, keeping your screen perfectly clear with minimal effort.
- Military-Grade Protection：Made of nano-reinforced 9H tempered glass, SGS certified. Provides 5X stronger scratch resistance and proven durability, withstanding thousands of pressure and impact tests.
- Smudge & Fingerprint Resistant：Hydrophobic and oleophobic coating repels fingerprints, sweat, and oil—ensuring your screen stays clean, clear, and smooth to the touch.
Clear cookies already stored
Blocking or partitioning changes how cookies are handled going forward; it does not automatically erase values already saved. Use your browser’s option to clear cookies and site data if you want to delete those existing values. This may sign you out of websites and remove saved preferences. Sites can set new cookies the next time you visit, so pair clearing with a protection setting rather than treating deletion as a permanent opt-out. Chrome documents cookie and site-data controls in its cookie settings help.
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Private or Incognito windows
Private browsing is not anonymity. It can limit what is retained locally after the private session, but it does not prevent websites from seeing your online activity, according to the FTC’s consumer guidance on how websites and apps collect information. Chrome says third-party cookies are blocked by default in Incognito mode; that cookie behavior does not hide your activity from the sites you visit or stop every form of tracking. See Chrome’s cookie settings help.
Rank #3
- [3 Pack] This product includes 3 pack privacy screen protectors.WORKS FOR iPhone 16/iPhone 15/iPhone 15 Pro 6.1 Inch tempered glass screen protector. Due to the rounded edge design of the iPhone 16/iPhone 15/iPhone 15 Pro and to enhance compatibility with most cases,the tempered glass screen protectors will be slightly smaller than the phone screen.[Not for iPhone 16e 6.1 inch, iPhone 15 Plus/iPhone 15 Pro Max/iPhone 16 Plus 6.7 inch,iPhone 16 Pro 6.3 inch,iPhone 16 Pro Max 6.9 inch]
- Specialty: HD rounded glass for iPhone 16/iPhone 15/iPhone 15 Pro 6.1 Inch is 99.99% touch-screen accurate.
- 99.99% High-definition hydrophobic and oleophobic screen coating protects against sweat and oil residue from fingerprints. Featuring maximum protection from scratches, scrapes, and bumps.
- High Privacy: Keeps your personal, private, and sensitive information hidden from strangers,screen is only visible to persons directly in front of screen.Good choose when you are in the bus,elevator,metro or other public occasions.(Note: Due to this privacy cover will darken the image to prevent the peeking eyes near you, you might need to turn your device display brightness up a bit when use it.)
- Online video installation instruction: Easiest Installation - removing dust and aligning it properly before actual installation,enjoy your screen as if it wasn't there.
Do Not Track
Do Not Track sends a preference request; it is not a technical cookie block. Google Chrome Help says, “Most websites and web services, including Google’s, don’t change their behavior when they receive a Do Not Track request.” You can enable the signal if you wish, but do not rely on it to prevent tracking. See Chrome’s Do Not Track help.
What cookie controls cannot stop
Cookie controls address cookies, especially the cross-site use of third-party cookies. They do not establish that you are anonymous or prevent every tracking method. Browser fingerprinting and other techniques are distinct from cookie storage; MDN discusses these alongside third-party cookies in its privacy guide. Treat cookie blocking as one privacy measure, not a complete shield.
Rank #4
- [3+3 Pack] This product includes 3 pack privacy screen protectors and 3 pack camera lens protectors with Installation Frame. Works For iPhone 16 [6.1 inch] tempered glass screen protector and camera lens protector. Featuring maximum protection from scratches, scrapes, and bumps. [Not for iPhone 16e 6.1 inch, iPhone 16 Pro 6.3 inch, iPhone 16 Pro Max 6.9 inch, iPhone 16 Plus 6.7 inch]
- Night shooting function: specially designed iPhone 16 6.1 Inch camera lens protective film. The camera lens protector adopts the new technology of "seamless" integration of augmented reality, with light transmittance and night shooting function, without the need to design the flash hole position, when the flash is turned on at night, the original quality of photos and videos can be restored.
- High Privacy: Keeps your personal, private, and sensitive information hidden from strangers, screen is only visible to persons directly in front of screen. Good choose when you are in the bus,elevator,metro or other public occasions. (Note: Due to this privacy cover will darken the image to prevent the peeking eyes near you, you might need to turn your device display brightness up a bit when use it.)
- Easiest Installation - Please watch our installation video tutorial before installation. Removing dust and aligning it properly with the help of the included installation frame before actual installation, enjoy your screen as if it wasn't there.
- 99.99% High-definition clear hydrophobic and oleophobic screen coating protects against sweat and oil residue from fingerprints, and enhance the visibility of the screen.
When blocking cookies breaks a website
Some sites rely on cookies for sign-in, embedded content, payments, or other features. If a site you trust stops working, first try its per-site cookie exception if your browser provides one. This grants that site the access it needs without turning off the browser’s protection everywhere. Chrome warns that some sites may not work as expected when cookies are blocked; its cookie settings guide explains site exceptions.
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Best Value
- 【Industry-Leading 100% Anti-Spy Privacy Protection】Designed for iPhone 17 Pro Max. Larger iPhone screens are easier for others to glance at, so UltraGlass uses patented, SEGI-certified 25° Blackout-3 optical technology to help block side views and keep emails, banking apps, and private content visible only to you—while keeping the front view HD-clear and comfortable through hours of scrolling and streaming.
- 【Unbreakable TOP 9H+ Glass, the Excellent 2nd Screen for Your iPhone】Boasting unparalleled shatter resistance and durability. And the core excellence is the top 9H+ tempered glass material, which is widely applied in aerospace and military fields for its ① Shatter-proof ② Scratch & Wear Resistance ③ Durability that is 7-8 times higher than other materials. Thus, UltraGlass builds a second tough screen for your iPhone 17 Pro Max.
- 【Invisible Armor, 1:1 Full Covers the iPhone's Screen】Mimicking the iPhone's original screen design, it uses a 1:1 3D curved reinforced black edge that wraps around every curve — case friendly — while securing even the most vulnerable edges. Seamlessly blending with the iPhone 17 ProMax screen, it's virtually invisible and feels like the original screen while offering enhanced full-screen protection.
- 【0 Bubbles + 0 Dust + 0 Misaligned =100% Successful Installation】Includes everything you need with pioneering automatic positioning, dust removal, and absorption technology, making the installation just effortlessly easy in seconds. No bubbles, no troubles—transforming beginners into experts!
- Trusted Quality, Lifetime Support】Trusted by millions worldwide, UltraGlass comes with a Lifetime Warranty covering installation, fit, and accidental damage. Our 24/7 support team is ready to help with fast, 1-on-1 assistance.
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