Charles Web Debugging Proxy
Business Profile
Core Value Proposition
Charles Web Debugging Proxy provides developers with visibility into all HTTP and SSL/HTTPS traffic between their machine and the Internet, enabling debugging.
Target Customer
Developers and testers who need to observe and debug web traffic (web developers, QA engineers).
Key Differentiator
Runs locally on the userâs computer as an HTTP proxy/monitor/reverse proxy with builtâin SSL proxying, breakpoints for intercepting/editing, and capabilities to edit/repeat requests and view AJAX/AMF traffic.
Implementation Timeline
Immediate value: on startup, Charles attempts to automatically configure the browser so youâre up and running immediately.
Pain Points
- 1Lack of visibility into what is sent and received between the browser/client and the servers.
- 2Difficulty diagnosing and fixing problems without access to requests, responses, and headers.
- 3Need to simulate conditions and test backend changes (e.g., slower connections, repeated requests) during debugging.
Key Features
- 1SSL Proxying to view SSL requests/responses in plain text
- 2Bandwidth Throttling to simulate slower Internet connections
- 3AJAX debugging to view XML and JSON requests/responses as a tree or text
- 4AMF / Flash Remoting viewer
- 5Breakpoints to intercept and edit requests or responses
Target Customer Industries
Decision Makers
- 1Developer
Client Results
- 1Visibility into all HTTP and SSL/HTTPS traffic to diagnose issues quickly
- 2Faster debugging by viewing requests/responses and headers
- 3Time savings in identifying and fixing problems
Competitive Advantages
- 1Operates locally on the userâs computer (no external service required)
- 2Comprehensive visibility into traffic including SSL
- 3Intercept and edit with Breakpoints
- 4Support for AJAX debugging and AMF viewing
- 5User-friendly UI with features like inline search and structured views
Key Benefits
Additional Product Information
Product Description
Charles is a web proxy (HTTP Proxy / HTTP Monitor) that runs on your own computer to record and display all data sent and received between your browser/client and servers, including SSL traffic. It supports SSL proxying, bandwidth throttling, AJAX debugging, AMF viewing, breakpoints, and more. It runs on Windows, Mac OS and Linux.
Target Market
Developers and testing teams building or debugging web applications who need deep visibility into HTTP/HTTPS traffic.
Unique Value Proposition
A local, feature-rich debugging proxy that decrypts and presents SSL traffic, intercepts and edits requests, and supports advanced debugging (AJAX/AMF) directly on the developerâs machine.
Technical Requirements
Runs on Windows, Mac OS and Linux; browser is configured to use Charles as the proxy (automatic browser configuration on startup).
Pricing Model
Free trial available; pricing not specified in the provided content.
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