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Debugging network traffic is one of those tasks where visibility is everything – and Charles Proxy has been the tool developers and QA engineers reach for when they need to see exactly what is traveling between a device and the internet. It sits between your machine and the network as an HTTP and HTTPS proxy, capturing every request and response in real time so you can inspect headers, cookies, payloads, and timing in full detail. What makes Charles software particularly useful is that it works across web browsers, iOS and Android devices, simulators, and emulators, giving teams a single view of network activity regardless of what platform they are testing. It runs on Windows, macOS, and Linux, and it goes far beyond simply showing you traffic – you can intercept, modify, repeat, and throttle requests without touching a line of application code. For developers, testers, and security engineers who need genuine visibility into how their apps communicate, Charles Proxy is the standard tool for the job. What can I do with Charles Proxy? With Charles software, you can: Inspect HTTP and HTTPS traffic in full. See every request and response passing between your machine and the internet – including headers, cookies, query parameters, and body content – in plain, readable form. SSL proxying decrypts HTTPS traffic so nothing is hidden from view. Debug web and mobile applications. Route traffic from iOS devices, Android phones, simulators, and emulators through Charles and get complete visibility into every network call your app makes. Invaluable for tracking down API issues, unexpected responses, and misconfigured endpoints. Modify requests and responses on the fly. Use breakpoints to intercept traffic before it reaches its destination, then edit headers, parameters, or body content in real time. Test how your application handles edge cases, errors, and unexpected server responses without any backend changes. Throttle bandwidth to simulate poor connections. Reproduce slow networks and high-latency conditions to test how your application behaves when connectivity is constrained. Catch performance issues before users on mobile networks do. Repeat and rewrite requests. Replay captured requests to test how backend changes affect responses, or set up rewrite rules to automatically modify traffic matching specific patterns – useful for mocking endpoints and redirecting requests during development. Debug AJAX, JSON, and XML traffic. Charles displays XML and JSON responses as formatted, navigable trees rather than raw text, making it much easier to inspect the data structure your app is working with. Native support for JSON-RPC and SOAP is included. Analyse performance and identify bottlenecks. The sequence view shows requests in chronological order with timing data, helping you spot slow endpoints, unnecessarily large payloads, and redundant calls that are hurting load times. Test security and certificate handling. Security engineers use Charles to examine how applications handle encryption, validate certificate behaviour, and test input handling – all without needing direct access to the server. See Everything With Charles Proxy Network issues are some of the hardest bugs to track down without the right tools, and Charles Proxy is specifically built to make that process faster and less frustrating. The combination of full traffic inspection, real-time request editing, mobile device support, and bandwidth simulation covers the majority of what developers and QA teams need on a daily basis. It runs across all major operating systems and handles both web and mobile environments from a single interface, which means less switching between tools mid-workflow. Whether you are chasing a stubborn API bug, validating how a mobile app handles a slow connection, or testing edge cases that are hard to reproduce in production, Charles software gives you the control to reproduce and fix the issue reliably. Buy Charles Proxy and bring that level of clarity t