DevPeek documentation

DevPeek is a local HTTP(S) proxy desktop app for development, testing, and joint debugging. This guide walks you from install and certificates through capture, scripts & breakpoints, page debugging, replay, and LAN collaboration.

Back to home for installers for every platform.

Browse by topic

• Install & preferencesGet installers, language & theme, proxy port, auto-update and changelog entry points.
• Proxy & HTTPS / certificatesSystem proxy, recording toggle, SSL allowlists, export certs, mobile install.
• Capture UI & requestsClient tabs, filters, raw vs script views, breakpoints, resend debug, throttling.
• Global scripts & breakpointsFour script phases, manager, manual & script rules, groups, script logs.
• Page debug & replayPick a client, Chromium extension import, preview & Elements/Console/Network, repro & JSON import.
• LAN collaborationDiscover peers, notes, send captures or debug recordings.
• FAQLinux install issues, CSP vs preview, auto-update, and more.

Main UI & replay entry points

The main window title bar only keeps two tabs: Capture and Debug. Record & replay (Repro) no longer has its own top tab—use the History sidebar, a detached replay window from the side toolbar (or equivalent), or import recording JSON as needed. The gear menu opens settings: script manager, SSL & breakpoint config, script logs, update notes, about, and more.

• Capture: tabs per client IP, list on the left and details on the right, with HTTPS decryption, filters, collaboration, resend debug, and more.
• Debug: pick an HTML client seen on the proxy; built-in DevTools-like panels and session recording; saved recordings appear in History.
• Repro / replay: pick a saved debug session in History and open Repro (often a new window), or import recording JSON when available; align console, DOM, and network on one timeline.

Decrypt HTTPS only where you are authorized—never use this on traffic you do not own or have permission to inspect.