SSE Inspector

Chrome DevTools extension specifically designed for Server-Sent Events (SSE), making SSE debugging more efficient and convenient.

What Problem Does It Solve?

Difficult to find SSE requests — Manually searching through numerous requests in the Network panel is time-consuming.

Message content scattered — SSE messages are spread across multiple EventStream records, making it hard to get a complete picture.

JSON formatting trouble — Need to manually copy content and paste it into another tool to format JSON.

Multiple connections mixed — Multiple SSE connections are mixed together, making them hard to distinguish.

Cannot search history — No support for searching through historical messages.

History lost on refresh — Historical records are lost after refreshing the page.

SSE Inspector vs Network Panel

Feature comparison: SSE Inspector vs Chrome Network Panel
Feature Network Panel SSE Inspector
Find SSE Requests Manual search Auto aggregated
View Message Content Click each record Chronological view
Format JSON Manual copy Auto-format
Multiple Connections Mixed together Grouped clearly
Search Messages Not supported Full search
History Retention Lost on refresh Preserved history

Key Features

Auto-Aggregation

Automatically collects all SSE requests and displays them in a dedicated panel for easy access.

Chronological View

All messages are displayed in time order, giving you a complete picture of the data flow.

JSON Auto-Format

Click any message to automatically format it into readable JSON with proper indentation.

Connection Grouping

Multiple SSE connections are automatically grouped and clearly labeled for easy distinction.

Message Search

Search through all historical messages with keyword filtering.

History Persistence

Message history is preserved in the panel, even after page refreshes.

Who Is It For?

Frontend Developers

Debug SSE implementations and monitor real-time data streams.

Backend Developers

Verify SSE endpoint responses and troubleshoot streaming issues.

API Testers

Inspect SSE APIs and validate real-time data delivery.

Mobile Developers

Monitor SSE connections in web views and hybrid apps.

Privacy & Security

SSE Inspector operates entirely locally in your browser. No data collection, no tracking, no external servers.

Learn More

Privacy Policy

Last Updated: January 14, 2026

TL;DR: SSE Inspector operates entirely locally in your browser. We do not collect, store, or transmit any of your personal data to external servers.

Introduction

Welcome to SSE Inspector. This Privacy Policy explains how we handle your information when you use our browser extension. We are committed to protecting your privacy and ensuring transparency about our data practices.

Information We Collect

SSE Inspector is designed with privacy as a core principle. The extension:

  • Does not collect personal information — We do not gather any identifiable information about you
  • Does not track your browsing history — Your web activity remains completely private
  • Does not use analytics or tracking tools — No third-party services monitor your usage
  • Processes data locally only — All SSE stream monitoring happens within your browser

How We Use Information

The extension accesses the following data solely for its core functionality:

Network Request Monitoring

SSE Inspector monitors network requests to identify and display Server-Sent Events (SSE) streams. This monitoring occurs entirely within your browser's developer tools and is temporary — data is only held in memory while the DevTools panel is open.

Local Storage

The extension may use browser local storage to save your preferences and settings. This data never leaves your device and is stored securely within your browser's sandboxed environment.

Data Sharing and Third Parties

We want to be crystal clear:

  • We do not sell your data
  • We do not share your data with third parties
  • We do not have servers that receive your data
  • No external analytics or advertising services are integrated

Since all processing happens locally in your browser, there is no data transmission to any external entity.

Permissions Explained

SSE Inspector requires certain browser permissions to function. Here's why:

DevTools Permission

Allows the extension to create a panel in your browser's developer tools where SSE streams are displayed. This permission is essential for the core functionality but does not grant access to your browsing data.

WebRequest Permission

Enables monitoring of network requests to identify SSE connections. This permission operates under the principle of minimum privilege — it only observes requests, does not modify them, and does not transmit data externally.

ActiveTab Permission

Allows interaction with the currently active tab only when you explicitly open the DevTools panel. This ensures the extension cannot access tabs you're not actively working with.

Data Security

All data processed by SSE Inspector remains within the secure, sandboxed environment of your browser. We follow browser extension security best practices to ensure:

  • No unauthorized access to your data
  • Isolation from other extensions and web pages
  • Compliance with browser security policies

Your Rights and Control

You have complete control over the extension:

  • Disable or Remove: You can disable or uninstall the extension at any time through your browser settings
  • Clear Data: You can clear any locally stored preferences by removing the extension
  • Transparency: The extension's source code behavior is transparent through the browser's extension inspection tools

Children's Privacy

SSE Inspector is a developer tool and is not directed at children under 13 years of age. We do not knowingly collect information from children. Since we don't collect any personal information at all, this risk is inherently minimized.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in the extension or legal requirements. When we do, we will update the "Last Updated" date at the top of this page. We encourage you to review this policy periodically.

Continued use of the extension after changes constitutes acceptance of the updated policy.

Open Source and Transparency

We believe in transparency. The extension's code can be inspected through your browser's extension management interface, allowing technically inclined users to verify our privacy claims.

Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our privacy practices, please don't hesitate to contact us:

Email: [email protected]

We take your privacy seriously and will respond to your inquiries as promptly as possible.