Developer Tools

Tools we built for our own workflow

Everything here started as something we needed while building our own apps, then got cleaned up enough to hand to someone else. No accounts, no telemetry, no upsell screens.

Header Modifier

A developer tool for Chrome. Add or override HTTP request headers on requests your browser makes, using rules you define — a header name, a value, and a URL pattern. Toggle any rule on or off, or kill them all with the master switch without deleting anything.Learn more about Header Modifier →

  • Add or override headers
  • Match by URL pattern
  • Per-rule toggles
  • Master switch
Add to ChromeRequires Chrome or a Chromium-based browser
Header nameX-Debug-Mode
Valueverbose
URL patternhttps://staging.example.com/*

More as we build them.