Daylight · 6500 K · 100%
A screen couldn’t connect. Choose Add screen to help it join.
Intensity adjusts the light on this page. Use your display settings for screen brightness.
One space. Many screens.
Your light goes with you.
A second display. A spare laptop. One light, flowing across them all.
Try it: drag the little window across. Or use the arrow keys.
On this computer
Open a window, drag its title bar to another display, then choose Fullscreen there. Change the light here. It changes there, too.
On another computer
Open this address on the same Wi-Fi or Ethernet network. Afterglow looks for your screens and connects automatically.
Allow local-network access if your browser asks. If your screens don’t find each other, use a sharing link below.
Use the original screen to create a sharing link or manual invitation.
More connection options
Have a pairing link or code?
Join stalled or failed?
Enter the inviting screen’s private IP address from its Wi-Fi or Ethernet settings, then choose Join again. Use that screen’s address, not this device’s.
Network troubleshooting
Allow local-network access if your browser asks. If pairing still stalls, enter this device’s IP address from its Wi-Fi or Ethernet settings, then create or join a new invitation. Repeat on the other device using its own address. Leave blank for automatic pairing.
Pair a screen.
Pairing stuck? Connect by network address
Keep both pages open. On the other screen, find its private IP address in Wi-Fi or Ethernet settings and enter it below. Your existing pairing codes stay valid.
Both screens must share a reachable network. Guest Wi-Fi, a VPN, or blocked local-network access can prevent a direct connection.
Pair only screens you trust: connected screens can change this setup. Guest Wi-Fi may block connections. No internet relay is used.
Your light setup
Your screens
This screen · Light is on
Light changes everything.
Turn a spare display into a warm fill light, a colorful backdrop, or a soft fill for your camera.
Adjust your actual screen brightness.
Intensity changes the pixels on this page. Set your display brightness yourself; color temperature is approximate and screens may look different.
Open it. Light together.
Open this same page in another tab or on another device on your network. Afterglow looks for the shared setup and joins automatically. Anyone with Afterglow open on a reachable local network can join and control its screens. Light updates travel directly between browsers.
Not seeing your other screen?
Allow local-network access if your browser asks. Guest Wi-Fi, VPNs, different internet routes, or browser privacy settings can prevent automatic discovery. Choose Add screen to share a link or try another connection method.
Keep your light in view.
Each screen needs its own tap on Fullscreen to expand the light. Keep awake works while this page is visible, when your browser allows it. Automatically joined screens reconnect on refresh, and another screen takes over when the controller closes.
Made by Khaos Studios ↗When focused: H on the hide/show button · F on Fullscreen · Escape to return. The page is cached for later offline visits when your browser supports it. Automatic discovery needs internet access to introduce screens; the light settings stay on the direct connection.