quizlet.com

Observed activities (66)

This chart shows the total unique trackers seen on this website. Rather than an exact count per page, it shows the diversity of trackers seen over multiple visits.

Filter the list by category to view subset tracker types.

Sorted by frequency of appearance on domain subpages

Cloudflare

76.19% • Cloudflare • Hosting

Quantcast

74.14% • Quantcast International Limited • Advertising

ScoreCard Research Beacon

74.14% • comScore, Inc. • Site Analytics

OneTrust

72.71% • OneTrust • Consent Management

Google Tag Manager

72.56% • Google • Essential

DoubleClick

63.55% • Google • Advertising

Google User Content

57.11% • Google • Hosting

Google Analytics

49.27% • Google • Site Analytics

Amazon Advertising

49.07% • Amazon • Advertising

10.

Facebook

38.1% • Meta • Advertising

11.

Brandmetrics.com

37.21% • • Advertising

12.

AppsFlyer

34.68% • AppsFlyer • Site Analytics

13.

Google

30.32% • Google • Advertising

14.

Facebook Social Graph

25.87% • Meta • Social Media

15.

Amazon CloudFront

21.57% • Amazon • Hosting

16.

Facebook CDN

20.44% • Meta • Hosting

17.

PageFair

12.76% • Blockthrough • Customer Interaction

18.

Ad Lightning

12.41% • Ad Lightning • Advertising

19.

Google Static

12.31% • Google • Hosting

20.

GrowthCode Analysis

9.91% • GrowthCode • Site Analytics

21.

PubMatic

9.21% • PubMatic, Inc. • Advertising

22.

Rubicon

9.15% • The Rubicon Project, Limited • Advertising

23.

Index Exchange

8.98% • Index Exchange, Inc. • Advertising

24.

AppNexus

8.9% • Microsoft • Advertising

25.

Yahoo!

8.78% • Verizon • Site Analytics

26.

ShareThrough

8.68% • Sharethrough, Inc • Advertising

27.

Sonobi

8.6% • Sonobi, Inc • Advertising

8.28% • Teads • Advertising

30.

Yahoo! Analytics

7.91% • Verizon • Site Analytics

31.

TikTok Analytics

6.12% • ByteDance Inc • Site Analytics

32.

Google AdServices

5.35% • Google • Advertising

33.

ID5 Sync

3.68% • ID5 Technology Ltd. • Site Analytics

34.

LiveRamp

3.52% • LiveRamp • Advertising

35.

Google Fonts

3.48% • Google • Hosting

36.

Criteo

3.16% • Criteo • Advertising

37.

Google Syndication

2.77% • Google • Advertising

38.

Lotame

2.19% • Lotame • Advertising

39.

TradeDesk

1.96% • The Trade Desk • Advertising

40.

Bidswitch

1.96% • Criteo • Advertising

41.

SMART AdServer

1.94% • Smart Adserver • Advertising

42.

Conversant

1.86% • Conversant • Advertising

43.

33Across

1.83% • 33Across • Advertising

44.

sovrn

1.76% • Sovrn Holdings Inc • Advertising

45.

PulsePoint

1.74% • PulsePoint, Inc. • Advertising

46.

OpenX

1.69% • OpenX Software Ltd. • Advertising

47.

Adobe Audience Manager

1.66% • Adobe • Advertising

48.

Google APIs

1.55% • Google • Hosting

11.3

Trackers Per Page Load

10.41

Tracking Requests Per Page Load

15.74%

Trackers Requests / All Requests

0.7MB

Data Saved

Tracking Methods

Cookies are files placed by the website, stored in the browser that is are used to identify you to the website. Learn more

What is a tracker? Where does the data come from?

Tracker Diagram

This diagram maps trackers on this page to their related categories and parent companies. The connecting flows visualize which companies provide trackers in each category and the volume identified across the site.

Tracker categories

Tracking companies