NiteLight | Auto Bluelight filter & Grayscale

PDF dark mode, save PDF page position, blue-light filter, grayscale mode, and custom website themes.

PDF dark mode that works directly with native browser PDF viewer, with customizable presets, colors, brightness and contrast. 🌗NiteLight is a customizable darkmode extension built for reading. Transform websites with themes, scheduled blue light filtering & gray-scale. ✨FEATURES • Dark mode PDF • Remember Pdf page no. • 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). Firefox PDF Demo: https://youtu.be/zjQdqaGCPJI 📄 SAVE PDF PAGE NO. • Save & Restore PDF Page Number / Scroll Position • works on multiple instances on the same PDF 🌐 Website Theme • Dynamic Filter: Works on any site. • CSS themes (beta): ‣ Custom theme: Create your own theme presets. ‣ CSS filters: Add support for your website yorself. 🌅 Auto Blue light Filter & Grayscale • Reduce blue light or apply Grayscale automatically based on sunrise/sunset, customizable time and intensity. ♿ ACCESSIBILITY • Color correction: Accessibility tool for people with vision problems like - color correction, reduce brightness. • Brightness Reducer or Enhancer • 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. Tested on Chrome, Edge, Firefox 🆓 Free • No sign-in • Lightweight • Offline 🔐 Privacy • 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 How is it so lightweight ? • 0 redundant code: It doesn't waste CPU cycles rebuilding a toolbar or a sidebar. It relies on the Firefox UI that is already loaded into your RAM. • Hardware acceleration: Because it applies a CSS canvas filter, GPU handles the color inversion efficiently, keeping CPU usage near 0 and saves battery. What makes it Secure ? • Browser handles the heavy lifting: document is still opened and processed by Browser’s highly secure, sandboxed native Pdf engine. Other 3rd party reader extensions use their own PDF viewer, introducing new attack surfaces, if it has security flaw, a malicious PDF can hijack your computer. • Strictly visual: it doesn't read or process the core data of your PDF; it simply sits on top as a visual stylesheet filter to change the colors you see. How is it Monetized? We don't even earn a penny from this project. Why low user count ? It uses bookmark on Firefox (optionally Chromium) for PDF so Google/Mozilla never finds out.