NiteLight | new Save Pdf Page No by Lumex

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.

🆓 Free • No sign-in • Lightweight • Offline

✨KEY 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

📄 Remember Pdf Page No.
• Save & Restore PDF Page Number / Scroll Position
• works on multiple instances on the same PDF

🌐 Website Themes
• 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.

🌅 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

🔐 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

Is NiteLight free?
Yes. NiteLight is free to use.

Does NiteLight track browsing activity?
NiteLight is designed to process its filtering functionality locally. No data is send anywhere.

Do I need a account for NiteLight ?
No

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.

Does NiteLight require internet ?
NiteLight work completely offline.

How is NiteLight so lightweight ?
• Zero 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 NiteLight applies a CSS canvas filter, your computer's GPU handles the color inversion efficiently, keeping CPU usage near zero and saving battery life during long reading sessions.

What makes NiteLight Secure ?
NiteLight uses Browser's Native Sandbox
• Browser handles the heavy lifting: The document is still opened and processed by Browser’s highly secure, sandboxed native Pdf engine.
Other 3rd party reader extensions work by using their own PDF viewer, introducing new attack surfaces, if that extension has a unknown security flaw, a malicious PDF can hijack your computer.
• Strictly visual: NiteLight 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 Nitelight Monetized?
Lumex doesn't even earn a penny from this project.

Why so low user count ?
NiteLight uses bookmark on Firefox (optionally on Chromium as well) for PDF so Google/Mozilla never finds that out. Downloads number is higher.