NiteLight | Native PDF Darkmode

PDF dark mode that works directly with native browser PDF viewer, with customizable presets, colors, brightness and contrast. Free, No Signup, offline 🌗NiteLight is a customizable darkmode extension built for reading. Transform websites with themes, scheduled blue light filtering & gray-scale. 🆓 100% Free • No sign-in • Lightweight • Offline ✨KEY FEATURES • Dark mode PDF • Website theme • Blue-light Filter • Gray scale 📄 PDFs Customizable PDF reader dark mode made with Presets. • Works on browser’s built-in native PDF viewer. • Presets: for different documents and preferences • Customize: colors, brightness, and contrast • Unlike other PDF night mode extensions it doesn't compromise security (working offline and with browser's PDF viewer). 🌐 WEBSITE THEMING • Website Dynamic Filter: Works on any site. • CSS themes: (beta) ‣ Custom theme: Create your own theme presets. ‣ CSS filters: Add support for your favorite website. 🌅 BLUE LIGHT FILTER – Day & Night • Reduce blue light automatically based on sunrise and sunset, customizable time and intensity. • Grayscale ♿ ACCESSIBILITY • Color correction: Accessibility tool for people with vision problems like - color correction, reduce brightness. • Brightness Reducer or Enhancer • Grayscale mode • E-Ink-style display emulation • Visual customization 1-click to save your eyes ! 🔥 Why NiteLight? it's built for reading. ⚙️ Presets: suit any type of document/website, any time of day. 🎨 Customize: use presets or create your own. Fine-control: Adjust colors, brightness, contrast, warmth, and more. ⚙️ Setup Install → open PDF → turn on NiteLight. 🔐 Private by design • no tracking or no data collection • no account • Offline: runs entirely on your device. One extension. PDFs, websites, and your browser. 🌙 Make your next reading session your own with NiteLight. FAQs Does NiteLight work with PDFs? Yes. NiteLight can apply its PDF dark mode directly to the browser's native PDF viewer, allowing you to customize PDF colors, brightness, contrast, and presets without opening the document in a separate reader. Can I use NiteLight on websites? Yes. NiteLight can apply dynamic filtering and custom themes to websites, with additional CSS-based customization available in beta. Is NiteLight free? Yes. NiteLight is free to use and does not require an account. Does NiteLight require an internet connection? NiteLight's core filtering functionality runs locally in the browser and does not require an online account. Does NiteLight track browsing activity? NiteLight is designed to process its filtering functionality locally and does not require an account.