Devlens

Devlens is a browser-based debugging and observability tool designed to help developers inspect, understand, and troubleshoot modern web applications more efficiently. It focuses on providing deep visibility into network activity, application state, and performance characteristics without requiring complex setup or backend integration. The primary purpose of Devlens is to streamline the debugging workflow by centralizing essential diagnostics into a single, intuitive interface accessible directly from the browser.

Key features of Devlens include detailed HTTP request and response inspection, including headers, payloads, and timing breakdowns, so developers can quickly identify API issues and integration problems. It offers structured logging and event tracking, enabling users to correlate frontend behavior with backend calls and application state changes. Performance insights help pinpoint slow endpoints, bottlenecks, and inefficient resource loading. Devlens also supports session-based analysis, making it easier to reproduce, share, and investigate issues across teams.