Circadian

Overview

A browser extension that tints pages by time of day (daytime, sunset, bedtime).

Circadian is really simple. It creates an invisible element over your whole web page, then applies a CSS filter to it! There's a bit of math involved to calculate the RGB values from the blackbody radiation scale, but that's essentially it! Philosophy: Blue-light impacts our sleep and overall health by disrupting melanopsin receptor's normal function that calibrates our circadian rhythm. This extension's creation was inspired by f.lux's ability to adjust your device's color profile temperature based on the time of day to aid in preventing this. It's not perfect (this extension definitely isn't) but it's a simple tool many users use to help. The idea: I was checking out some dark reader Firefox addons when I asked myself if any of these dark reader addons had temperature adjustments? I suspect not. And if I were to make an extension, I could use Orion on my iPhone to install my extension and essentially get f.lux on my iPhone! (Apple shut down f.lux's app) Obviously it's not system wide, but still kinda neat! You can even pair Circadian with other dark reader extensions to get the best experience!

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Details

Version
1.0.4
Updated
November 10, 2025
Flag concern
Offered by
Pas
Size
68.68KiB
Languages
English
Developer
Email
psteam.bulldog471@slmails.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

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