A bright white page at night is hard to read, and plenty of sites still don't offer a dark theme. Reader Mode has always had its own dark theme — but that only helps once you've switched into the reader.
FocusFlow v2.11.0 adds Page Dark Mode (Pro): dark backgrounds and light text on the web pages you visit, without leaving the page — or set it to System and let your device decide.
🌙 Two Modes: Dark or System
- Dark keeps every page dark, all the time.
- System follows your device's light/dark setting. When your device switches to dark, your pages follow straight away, and they go back to light when your device does.
🎨 What It Changes, and What It Leaves Alone
Page Dark Mode repaints the page itself with one dark palette — the same Dark values Reader Mode uses:
- Background
#121212, with a slightly lighter#1E1E1Efor text fields and buttons. - Text
#E8E8E8, measured at a 15.3:1 contrast ratio against the background. - Links
#78A9FF, measured at 8.0:1 against the background.
It recolours the page; it doesn't invert it. So:
- Images and video are left as they are. Photos, video, canvas drawings and SVG graphics keep their real colours — no negative-looking pictures.
- Icons keep their colour, so a red warning icon is still red.
- Reader Mode keeps its own theme. When you open the reader it uses its own themes, and the page goes back to Page Dark Mode when you close it.
- Visual Filters still work on top of it, because Page Dark Mode doesn't use a filter to darken the page.
While Page Dark Mode is on it sets the page's text colours itself, because light-page text colours would be unreadable on a dark background.
🖱️ How to Turn It On
- Open the FocusFlow popup → click Advanced Settings.
- Switch to the Visual Aids tab.
- Turn on Page Dark Mode, then pick Dark or System.
🔒 Private by Design
Page Dark Mode runs entirely in your browser. It doesn't send the pages you visit anywhere — like all of FocusFlow's reading aids, it works on your device.
Related Reading
- FocusFlow v2.11.0: PDF Export, Page Dark Mode & Smarter AI Tools — everything else in this release.
- Reduce Screen Reading Fatigue — more ways to make long reading sessions easier on your eyes.
Try It Today
Page Dark Mode is part of FocusFlow Pro, which works in Chrome and desktop Firefox — not yet in Edge or Firefox for Android. Step-by-step help lives in How to Use → Page Dark Mode.
Install FocusFlow Free on Chrome
Frequently Asked Questions
What is Page Dark Mode?
Page Dark Mode is a FocusFlow Pro feature that repaints the web pages you visit with dark backgrounds and light text. It uses the same Dark colours as Reader Mode: text #E8E8E8 on #121212, measured at a 15.3:1 contrast ratio.
What is the difference between Dark and System?
Dark keeps pages dark all the time. System follows your device's light/dark setting and switches with it.
Does Page Dark Mode invert images?
No. It recolours the page instead of inverting it, so images, video, canvas drawings and SVG graphics keep their real colours, and icons keep theirs.
How do I turn on Page Dark Mode?
Open the FocusFlow popup, click Advanced Settings, switch to the Visual Aids tab, turn on Page Dark Mode, then pick Dark or System.
Does Page Dark Mode change Reader Mode?
No. Reader Mode keeps its own themes. When you close the reader, the page goes back to Page Dark Mode.
Which browsers support Page Dark Mode?
Page Dark Mode is part of FocusFlow Pro. FocusFlow Pro works in the FocusFlow extension for Chrome and desktop Firefox. It is not yet available in Edge or in Firefox for Android.