All instructions about how to set up Cookie-Script properly

Third-party cookies are cookies that are set by a website other than the one you are currently on. For example, you can have a "Like" button on your website which will store a cookie on visitor's computer, that cookie can later be accessed by Facebook to identify visitor and see which websites he visited. Such cookie is considered to be a third-party cookie.

Another example would be an advertising service (ex: AdSense) which also creates a third-party cookie to monitor which websites were visited by each user.

Read on to learn more about third-party cookies and why these may soon be disappearing from the web.

How to Tell if a Website Uses Third-Party Cookies

You can check if website uses third-party cookies in any modern browser. Instructions vary in different browsers.

In Google Chrome, do the following:

  • Press F12 to open Developer Tools (or right-click on the page and choose Inspect Element)
  • In Developer Tools choose the Application tab
  • On the left, double-click the Cookies section to unfold it

You should see current website domain (or subdomain) here. If you see any other domains in this list it means the website uses third-party cookies:


Blocking Third-Party Cookies

Learn how to prevent third-party cookies from running on your site until users consent to your cookie policy with these helpful instructions from Cookie Script.

How Third-Party Cookies Work

Third-party cookies are — you guessed it — cookies that are tracked by websites other than the one you are currently visiting. The most common third-party entitities are advertisers, marketers, and social media platforms.

Third-party cookies… one common example. Let’s say earlier in the week you looked up some vacation rentals in Cancun. You browsed a few websites, admired the photos of the sunsets and sandy beaches, but ultimately decided to wait another year before planning your vacation. A few days go by and suddenly it seems like you are seeing ads for Cancun vacations on many of the websites you visit. Is it mere coincidence? Not really. The reason you are now seeing these ads on vacationing in Cancun is that your web browser stored a third-party cookie and is using this information to send you targeted advertisements.

You’re unintentionally creating a “trail of crumbs.” Most web users don’t realize that a browser window with multiple tabs open constitutes a single “session.” As you move from tab to tab, you are unwittingly relaying information about your web visit history to other websites and parties. And, closing the web browser doesn’t always eliminate the cookies your computer stores following the session. Depending on the browser you use, you may have to activate this manually.

Dump your cookies after each session. If you want to dump your cookies at the end of each session, select one of the following in your browser’s preferences:

  • Chrome: ‘Keep local data only until you quit your browser’
  • Firefox: ‘Clear history when Firefox closes’
  • nternet Explorer: Delete browsing history on exit

If you do not select one these preferences your browser will preserve cookie data from session to session. In other words, those ads tempting you into a vacation in Cancun will not disappear so quickly.

That seemingly random email isn’t so random. Let’s say you’ve visited a website where you have created a login ID. They likely have your name, email address, and possibly even your telephone number and street address. If the website uses third-party cookies, or you have other tabs open during your session, your cookies may be revealing your contact information to other parties in order to send you SPAM.

You may be on a website with third-party cookies and not even know it. One of the failings of cookie notices is that they don’t often specify what types of cookies are being used on the site. They could be first-party, third-party, or both. But, if the website has advertisements (which many do), then you can reasonably expect the website to be generating both first- and third-party cookies.

To see if a particular website is using third-party cookies you can try the method mentioned at the start of this article, or visit and enter the web address into the bar on the home page.

But, are Third-Party Cookies Actually Useful?

Since the late 1990s, online marketers have built their businesses on the ability to track online users and then target them with advertisements, and much of this has been through the use of third-party cookies. Let’s play “devil’s advocate” for a moment. Could third-party cookies actually be useful for users? In a way, yes. The two largest online advertising firms, Google Ads and AdSense, make a valid point that third-party cookies are useful to consumers as they create advertisements that are in line with individual interests.

What happens after third-party cookies are eliminated? Once third-party cookies disappear, there’s a likelihood that online advertisements will revert to contextual advertisements. That is, advertisements that are targeted to certain populations based on the website being visited, much like how magazines operate.

The Crackdown of Third-Party Cookies

With the passage of CCPA, ePR, and GDPR, governments are seeking to protect the privacy rights of website users. These laws and regulations create civil and/or criminal penalties for those that fail to notify web users of the presence of cookies. These regulations also require website operators to let users know what information is being collected and to whom this information is shared, along with a way to opt-out at any time.

Third-party cookies’ days are numbered. Pressure from regulators and consumers has led many within the tech industry to declare third-party cookies (and the targeted ads fueled by them) will soon come to an end. Apple’s Safari and Mozilla’s Firefox now block third-party cookies by default. One notable holdout is Google Chrome, which has a commanding 67% of browser market share.

Google has a major stake in third-party cookies. Nearly 90% of Google’s revenue is generated through advertising. Without third-party cookies, their advertising prowess could be negatively affected. This is one of the suspected reasons that the company is delaying a default block on third-party cookies until 2022. Until then, the company is taking steps to curtail some of the more invasive aspects of third-party cookies with their SameSite tool.

Why You Should Be Using Cookie Script on Your Website

Keeping up with the latest cookie regulations and making sure your website is in compliance is a job in itself. Cookie Script keeps you compliant with GDPR, CCPA, ePR, and other regulations that are surely on the horizon. And, it’s super-easy to use.

How it Works

Cookie Script automatically does the following:

  • Scans your website for cookies
  • Categorizes and adds descriptions to your cookies
  • Maintains a full history of user consents (as required by GDPR)
  • Allows users to withdraw consent at any time
  • Blocks cookies until users agree to privacy policy
  • Block cookies until visitor consents (GDPR and CCPA)

Block third-party cookies by default. Cookie Scirpt also gives you the option to prevent third-party cookies from running on your website.

Cookie Script makes the web a friendlier, more transparent experience for businesses and users. Getting started is free — create an account today, or check out the live demo to see how Cookie Script will work on your website.