Page Performance Monitor

Privacy-Policy

Introduction

Page Performance Monitor ("the Extension") is a Chrome browser extension developed by Almir Mustafic that helps users measure and analyze website performance metrics. We are committed to protecting your privacy and being transparent about how the Extension handles your data.

This Privacy Policy explains what information the Extension collects, how it is used, stored, and protected, and your rights regarding this data.

Developer Information

Extension Name: Page Performance Monitor
Developer: Almir Mustafic
Contact Email: almir.mustafic@gmail.com
Extension Type: Browser Performance Analysis Tool

What Data We Collect

The Extension collects website performance metrics only from pages you actively choose to measure when monitoring is enabled. This includes:

Performance Metrics

Page Load Times: Total load time, DOM Content Loaded time, and load event duration
Network Timing Data: DNS lookup time, TCP connection time, Time to First Byte (TTFB), and response times
Rendering Metrics: DOM processing time, First Paint, and First Contentful Paint
Resource Information: Total number of resources loaded, resource types (scripts, stylesheets, images, etc.), and total transfer size in kilobytes
Memory Usage: JavaScript heap size information (if available in your browser)

Page Information

Website URLs: The full URL of pages you measure
Page Titles: The title of the webpage as displayed in the browser tab
Base URLs: The origin/domain of the measured websites
Timestamps: Date and time when each measurement was taken

User Control Data

Monitoring Status: Whether you have enabled or disabled performance monitoring

How We Collect Data

Data collection occurs only when:

You have explicitly clicked the "Start Monitoring" button to enable tracking
You visit a webpage and click the Extension icon to measure its performance
The Extension is granted permission to access the current tab

The Extension does NOT collect data:

From pages you visit without clicking the Extension icon
When monitoring is disabled
From Chrome internal pages (like chrome:// pages)
Automatically or in the background without your interaction

How Your Data Is Stored

Local Storage Only

All data is stored exclusively on your local device using Chrome's built-in chrome.storage.local API. This means:

Data never leaves your computer or device
No external servers receive your data
No cloud storage services are used
Data is stored in your browser's secure storage area
Only you have access to this data through as the owner of your computer

Data Retention

Your performance data is retained indefinitely on your device until you choose to delete it. You have complete control over data retention through the Extension's interface.

How Your Data Is Used

The performance data collected by the Extension is used solely for the following purposes:

Display and Analysis

Real-Time Metrics: Showing current page performance measurements in the Extension popup
Performance History: Displaying historical performance data for pages you've measured
Comparative Analysis: Allowing you to compare performance across different pages and time periods

Export Functionality

JSON Export: Enabling you to export your performance data in JSON format for external analysis, reporting, or archival purposes
Data Portability: Allowing you to use your data with other tools or share it with colleagues if you choose

The Extension does NOT use your data for:

Advertising purposes
Marketing or promotional activities
Profiling or behavior tracking
Sale or transfer to third parties
Any purpose other than displaying performance metrics to you

Data Sharing and Third-Party Access

We do not share, sell, rent, or transfer your data to any third parties. Period.

The Extension:

Does NOT communicate with external servers
Does NOT include analytics or tracking services
Does NOT contain advertisements
Does NOT integrate with third-party services
Does NOT send data outside of your local device

Your performance data remains private and under your exclusive control at all times.

Your Rights and Control

You have complete control over your data:

Start and Stop Collection

Use the "Start Monitoring" button to begin collecting data
Use the "Stop & Erase" button to immediately stop collection and delete all stored data
Change monitoring status at any time without restrictions

View Your Data

Access all collected performance metrics through the Extension popup
Review complete performance history at any time
See detailed information about each measurement

Export Your Data

Export all performance data as formatted JSON using the "Export history in raw JSON" button
Save exported data to your local file system by copying from the export textarea into your choice of tool
Use exported data with external tools or share it at your discretion

Delete Your Data

Click the "Stop & Erase" button to permanently delete all stored performance data
Uninstall the Extension to remove all data (Chrome automatically clears Extension storage upon uninstall)
Clear individual entries (if implemented in future versions)

Chrome Permissions Explained

The Extension requires specific Chrome permissions to function. Here's why each permission is needed:

activeTab Permission

Purpose: Allows the Extension to access information about the currently active browser tab
Usage: Required to retrieve the page URL, title, and performance metrics of the page you're measuring
Limitation: Only accesses the tab when you click the Extension icon; does not access tabs in the background

scripting Permission

Purpose: Enables the Extension to run JavaScript code in the context of web pages
Usage: Necessary to inject performance measurement code that collects timing data from the browser's Performance API
Limitation: Code is only injected when you actively click the Extension icon to measure a page

storage Permission

Purpose: Allows the Extension to store data locally using Chrome's storage API
Usage: Required to save performance measurements, history, and monitoring preferences on your device
Limitation: Data is stored only on your local device and never transmitted externally

Data Security

While the Extension does not transmit data externally, we take data security seriously:

Local Security

All data is protected by Chrome's built-in security features
Data is stored in Chrome's secure storage area, isolated from other applications
Access to Extension storage is restricted to the Extension itself

No Transmission Risk

Since data never leaves your device, there is no risk of interception during transmission
No authentication tokens, passwords, or sensitive credentials are collected or stored
No network vulnerabilities apply since no network communication occurs

Children's Privacy

The Page Performance Monitor Extension is not directed at children under the age of 13. We do not knowingly collect personal information from children. The Extension collects only technical performance metrics and does not collect personally identifiable information from users of any age.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in the Extension's functionality or legal requirements. When we make changes:

The "Last Updated" date at the bottom of this policy will be revised
Significant changes will be noted in the Extension's Chrome Web Store listing
Users will be encouraged to review the updated policy

Continued use of the Extension after changes indicates acceptance of the updated Privacy Policy.

Compliance and Legal Basis

This Extension complies with:

Chrome Web Store Developer Program Policies
General Data Protection Regulation (GDPR) principles for EU users
California Consumer Privacy Act (CCPA) for California residents
Other applicable data protection laws

Legal Basis for Data Processing

For users in the European Economic Area (EEA), our legal basis for processing is:

Consent: You explicitly enable monitoring by clicking "Start Monitoring"
Legitimate Interest: Providing the performance measurement service you've requested

Your Data Protection Rights (GDPR)

If you are located in the European Economic Area, you have the following rights:

Right to Access: View all your collected data through the Extension interface
Right to Rectification: This data is ONLY stored within your browser for your use only. As you export it into JSON, you can rectify the data before you use it for other purposes. You are in control.
Right to Erasure: Delete all your data using the "Stop & Erase" button
Right to Data Portability: Export your data in JSON format
Right to Withdraw Consent: Disable monitoring at any time by clicking "Stop & Erase"
Right to Object: Stop data collection by disabling monitoring

Contact Information

If you have any questions, concerns, or requests regarding this Privacy Policy or how the Extension handles your data, please contact:

Developer: Almir Mustafic
Email: almir.mustafic@gmail.com

We will respond to your inquiry within a reasonable timeframe, typically within 7-14 business days.

Transparency Commitment

We are committed to complete transparency about the Extension's data practices. This Privacy Policy represents our full disclosure of how data is collected, used, and protected. If you have any questions not answered here, please contact us.

Acknowledgment

By installing and using the Page Performance Monitor Extension, you acknowledge that you have read, understood, and agree to this Privacy Policy.

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