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Fbevents

Meta Platforms, Inc.

Advertising
monitor Exposure
v525a75a0
A JavaScript library that allows websites to track user actions and events for advertising and analytics purposes, primarily to optimize Facebook ad campaigns.
10M+ sites
Updated 7/14/2026
https://connect.facebook.net/en_US/fbevents.js
Exposure Score
77

Popularity

92%

Usage across websites

File Size

98.50 KB

Download size

Load Time

18.27ms

Network latency

Execution Time

0.00ms

Runtime performance

Version Telemetry

Version Timeline

Visual representation of each version's active period

Metrics Over Time

Security score, performance score, and file size trends

0255075100v3c72v3427v525av7d1dvfd7bv6028v83eevc5b3v4bddv24abvbda8v203bv8b3bv2395v5647va1e3vc530v5a26v2cd7ve566ve681Normalized ScoreVersion
Security Score
Performance Score
File Size (KB)

Uptime History

Average response time over time

Version History Details

Detailed information for each version

ve6818637Latest
Span: 3 days
Score: 70
Size: 103.70 KB
ve5661082Active
Span: 1 day
Score: 65
Size: 103.70 KB
v2cd7745b
Span: 1 day
Score: 70
Size: 103.68 KB
v5a26ecf0
Span: 1 day
Score: 65
Size: 103.68 KB
vc53010b7
Span: 1 day
Score: 70
Size: 103.68 KB
va1e3c8f5
Span: 2 days
Score: 65
Size: 103.68 KB
v5647bad8
Span: 2 days
Score: 65
Size: 103.62 KB
v23956608
Span: 1 day
Score: 85
Size: 103.62 KB
v8b3bc01c
Span: 1 day
Score: 65
Size: 103.62 KB
v203bc3d9
Span: 1 day
Score: 65
Size: 103.06 KB
vbda83d88
Span: 4 days
Score: 70
Size: 102.80 KB
v24abadc1
Span: 1 day
Score: 85
Size: 102.78 KB
v4bddd157
Span: 1 day
Score: 70
Size: 102.66 KB
vc5b39539
Span: 2 days
Score: 70
Size: 102.50 KB
v83ee7352
Span: 4 days
Score: 70
Size: 102.50 KB
v6028a35d
Span: 1 day
Score: 70
Size: 102.50 KB
vfd7b3502
Span: 1 day
Score: 85
Size: 102.59 KB
v7d1d916b
Span: 4 days
Score: 85
Size: 98.49 KB
v525a75a0
Span: 8 days
Score: 70
Size: 98.50 KB
v34272a2c
Span: 7 days
Score: 70
Size: 98.50 KB
v3c72a748
Span: 5 days
Score: 70
Size: 98.50 KB

Exposure & Risks

Security Score

Overall Security70 / 100
Exposure Levelmonitor

Risk Assessment

Critical Risks1
Total Observations2

Exposure Status

Monitor
Moderate behavioral concerns, review and mitigation advised.

Behavioral Concerns

Long Script Execution Time

Detects unusually long script execution times, which could indicate resource abuse (e.g., cryptomining) or a stalled script.

Security Observations

Security-related findings from analysis

No security observations recorded for this version

Privacy & Data Flow

Data Collection

Cookies and local storage used by this script

Cookies

_fbp3 months
Used by Facebook to deliver a series of advertisement products, such as real-time bidding from third-party advertisers. It identifies the browser for tracking purposes.
fr3 months
Core Facebook tracking cookie used to provide, measure, and improve the relevancy of ads, for broad targeting, and conversion attribution.
_fbc3 months
Used by Facebook to store referrer data to track conversions across different websites and sessions for Facebook ads.

Third-party Connections

External domains this script connects to

No external connections detected

Permissions Required

Browser permissions and capabilities used

user profilenotifications

Privacy Observations

Privacy-related findings from analysis

No privacy observations recorded for this version

Technical & Performance Analytics

Load Performance

File Size98.50 KB
Load Time18.27ms

Runtime Performance

Execution Time0.00ms
Network Requests0

Impact Assessment

Good
Minimal performance impact on page load

Performance Observations

Performance-related findings from analysis

No performance observations recorded for this version

Global Variables

Variables added to the global scope

__SENTRY__

Event Listeners

Events this script listens for

No event listeners detected

Browser API Access

APIs and browser features accessed by this script

navigator.userAgentNotification.requestPermission

Technical Details

Compressed
Yes
CDN Delivery
Yes
Total Views
577
Is Mirror
No
Network Requests
0
Resource Hash
525a75a05d2ded55a857efc20611ca9d97b5a5a71ef56dc22a6354c3b0ee2253

AI Insights & Alternatives

Description

A comprehensive overview of this resource

The Facebook Pixel, loaded via `fbevents.js`, is a piece of JavaScript code that website owners embed on their sites to track visitor activity. It collects data on how users interact with the website, such as page views, button clicks, product views, additions to cart, and purchases. This data is then sent back to Facebook. The primary purpose of the Facebook Pixel is to help advertisers measure the effectiveness of their Facebook ad campaigns, optimize ad delivery to relevant audiences, build custom audiences for retargeting, and create lookalike audiences. It uses cookies to identify users across different sessions and devices, enabling cross-device conversion tracking. The script facilitates the reporting of various standard and custom events, providing insights into user funnels and campaign performance.

Key Features

Core functionalities and capabilities of this resource

  • Ad Campaign Optimization
  • Conversion Tracking
  • Audience Building
  • Retargeting
  • Lookalike Audiences
  • Event Tracking
  • Cross-device Tracking

Alternatives

Similar libraries you might consider

Documentation & Resources

Official Documentation