Sunrise Brightness

Automatically adjusts your screen brightness throughout the day based on the sun's position. Runs in the system tray and adapts to weather conditions.

Features

• Solar-powered brightness: uses the NREL Solar Position Algorithm (±0.0003°) to compute precise sunrise, sunset, and solar elevation for your location — no API key needed
• Weather adaptation: dims your screens when it's cloudy or rainy using Open-Meteo's free forecast (no API key)
• Interactive curve editor: drag control points to customize your brightness profile, with 7 presets (Natural, Linear, Night Owl, Relax, Cinema, Paper, Early Bird)
• Per-monitor support: set each display to follow the global curve, apply an offset, use a fully custom curve, or be ignored entirely
• System tray: runs silently in the background, opens a settings panel on click
• Auto-start: optional launch on boot
• Auto-update check: notifies you when a new version is available on GitHub

Installation

Linux (.deb)

Download the .deb from the latest release and install:

sudo dpkg -i sunrise-brightness_*.deb

This automatically installs the binary to /usr/bin/ and pulls in runtime dependencies.

Linux (manual binary)

Download the binary from the latest release, then:

# Install runtime dependencies
sudo apt install libgtk-3-0 libxdo3 libappindicator3-1 libssl3

# Install the binary
sudo install -m 755 sunrise-brightness-linux /usr/local/bin/sunrise-brightness

# Run it
sunrise-brightness

Windows

Download sunrise-brightness-windows.exe from the latest release and run it. No installation needed, the binary is self-contained.

Configuration

Settings are stored in a TOML file at the platform-appropriate config directory:

Platform	Path
Linux	~/.config/sunrise-brightness/config.toml
Windows	%APPDATA%\sunrise-brightness\config\config.toml

All settings can be changed through the GUI. Example config:

latitude = 45
longitude = 0
update_interval_secs = 180
start_on_startup = true
weather_adaptive = true
cloud_attenuation = 0.5

[global_curve]
preset = "natural"
[[global_curve.points]]
position = 0.0
brightness = 0.0
# ... more points

If latitude/longitude are omitted, your location is auto-detected from your IP address.

Building from source

# Linux: install build dependencies
sudo apt install build-essential pkg-config libgtk-3-dev libappindicator3-dev libxdo-dev libssl-dev libwayland-dev

# Build
cargo build --release

# The binary is at target/release/sunrise-brightness

Build verification

All release binaries include SLSA build provenance attestations. You can verify any binary with:

gh attestation verify sunrise-brightness-linux --repo Vianpyro/sunrise-brightness