Vesper — Smart Dark Mode

About

Vesper transforms every website into a comfortable dark experience — without the harsh greens or muddy grays of generic dark mode tools.

✦ 5 CURATED COLOR MODES
Choose the mood that fits your moment: Standard, Dimmed, Midnight, Warm, or Cool. Each mode is hand-tuned for readability and beauty.

✦ PER-SITE CONTROLS
Fine-tune brightness, contrast, and sepia for each website individually. Set it once — Vesper remembers.

✦ READING MODE (Pro)
Strip away sidebars, ads, and distractions. Focused articles, nothing else.

✦ PRIVACY FIRST
No data collection. No telemetry. All settings stay on your device. Vesper never reads or transmits your browsing data.

✦ LIGHTWEIGHT
Runs as a Manifest V3 extension — minimal permissions, low memory footprint, and no background tracking.

HOW IT WORKS
Vesper analyzes page colors and applies a dark filter tuned to each color mode. Works on virtually every website, including complex web apps.

PERMISSIONS
• Storage — saves your preferences locally
• Scripting — applies the dark mode filter to pages
• Font Settings — adjusts font rendering for dark backgrounds

SUPPORT
Visit https://vesper.agatisgroup.com for help and documentation.