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A quick guide to scanning your network, monitoring NDI feeds, and testing bandwidth
A quick guide to scanning your network, monitoring NDI feeds, and testing bandwidth
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Snap LAN Scan requires macOS 14.0 (Sonoma) or later. Works on both Apple Silicon and Intel Macs. A WiFi or Ethernet network connection is required for scanning.
Make sure you've allowed local network access when macOS prompts you. Also verify you're connected to a WiFi or Ethernet network. The app scans your local subnet, so devices must be on the same network segment.
NDI video preview requires the NDI runtime to be installed on your Mac. The app will still discover NDI sources via Bonjour without it. You can download the NDI runtime from ndi.video.
Device type detection uses MAC address OUI lookup. Some newer or less common manufacturers may not be in the database. You can manually set a device's type by clicking on it and choosing a category.
No. All scanning happens locally on your Mac. No network data, device information, or scan results are ever transmitted off your device. See our Privacy Policy for details.
Refunds for Mac App Store purchases are handled by Apple. Visit reportaproblem.apple.com to request a refund.
When you first open the app, it will automatically scan your local network and begin discovering connected devices. Make sure you're connected to WiFi or Ethernet.
macOS may prompt you to allow local network access. Tap Allow so the app can discover devices on your LAN.
Click the SCAN button in the toolbar to start a new network scan. The app probes every IP address in your subnet and reads the system ARP table to discover devices.
Devices appear in a sortable table with their IP, MAC address, hostname, and type. Green dots mean online, teal means newly discovered, and gray means offline since the last scan. The app automatically detects device types like Apple devices, PCs, routers, printers, cameras, media devices, and IoT devices using MAC address lookup.
Click any device row to open a detail sheet showing its full info: IP address, MAC address, detected type, and vendor. From there you can set a custom name and category. Your customizations are saved and persist across scans and app launches.
After a scan completes, the app automatically runs a quick connection quality sweep across all discovered devices. Results appear progressively in the Quality column. Click any device to run a full 10-probe latency test and see detailed results including average latency, jitter, packet loss, and a quality rating.
Use the filter bar to show or hide devices by category: Apple, PC, Network, Camera, IoT, Printer, Media, and Unknown. Each filter chip shows a count of matching devices.
Click the NDI Feeds tab. The app uses Bonjour to automatically discover all NDI sources on your network.
If the NDI runtime is installed on your Mac, you'll see live video feeds in a dynamic grid. The layout automatically adapts based on the number of sources.
The floating overlay panel shows your interface speed, gateway latency, jitter, and a verdict on whether your network is ready for NDI streaming.
Click the Bandwidth tab to see your active network interface, connection type (WiFi or Ethernet), and link speed.
Click Test Internet Speed to measure your download speed, upload speed, and internet latency. Results are displayed as large easy-to-read cards.
The app automatically detects your network gateway and tests its health with latency, jitter, and packet loss measurements.
The app calculates how many full NDI and NDI HX streams your network can support based on 80% usable bandwidth. Use this to plan your production setup.