DNS Tool

A lightweight macOS menu bar app for managing DNS in one click — flush the DNS cache, switch to Cloudflare's resolver, or reset to automatic, without ever opening Terminal.

Features

• 🔄 Flush DNS Cache — clears the system resolver cache instantly
• ☁️ Set DNS → Cloudflare — points Wi-Fi at 1.1.1.1 / 1.0.0.1
• ↩️ Reset DNS → Automatic — restores your router's default (DHCP)
• 📡 Live status line — shows your current DNS servers right in the menu
• ⌨️ Configurable shortcuts — rebind any action to your own key combo
• 🚀 Launch at Login — optional auto-start (toggle in the menu)
• 🪶 Menu bar only — no Dock icon, no window clutter

Install

1. Download DNS Tool.dmg from the Releases page.
2. Open it and drag DNS Tool into Applications.
3. Launch it — the network icon appears in your menu bar.

First launch: right-click the app → Open (the app is self-signed, so Gatekeeper asks once). After that it opens normally.

Usage

Click the menu bar icon:

Item	Default shortcut	What it does
Flush DNS Cache	⌘F	Clears the DNS cache
Set DNS → Cloudflare	⌘C	Uses 1.1.1.1 / 1.0.0.1
Reset DNS → Automatic	⌘R	Back to DHCP / router DNS
Launch at Login	—	Toggle auto-start
Settings…	⌘,	Rebind shortcuts

Actions that change network settings prompt for your Mac password (required by macOS).

Build from source

Requires the Xcode command-line tools.

swiftc -O src/main.swift -o "DNS Tool.app/Contents/MacOS/DNSTool"

The repo includes:

• src/main.swift — the app
• src/makeicon.swift — helper that crops/rounds the source artwork into a macOS icon set

Notes

• DNS changes apply to the Wi-Fi service.
• Tested on macOS 13+ (uses SMAppService for the login item).

License

GPL v3.0.