Deluminate is an extension for Google Chrome (and Chromium) that inverts the luminance of websites to make them easier on the eyes.

Warning: because of the way this extension inverts the luminance of rendered pages, it may cause noticeable slowdowns for some users. If this happens, you may prefer another extension that uses custom CSS to set the default background and text color of web pages.


Invert the brightness of the web without changing the colors! Useful as a night mode to darken most bright web sites (like Google), or just for making the web soothing black instead of glaring white. Similar to the "High Contrast" extension by Google, but tries not to ruin images by blowing out the contrast or changing the colors. It also offers a low-contrast mode and three strategies for dealing with images, configurable on a per-domain basis!

Invert Everything

In this mode, the luminance is inverted on everything, including all images.

Keep Images Normal

In this mode, the plugin tries to avoid inverting the luminance on all images. Useful for websites that make strange decisions about image types (e.g., using PNGs for photos).

Smart Invert Images

The default--this mode tries to intelligently choose whether images should be inverted or not based on the following criteria:

Low Contrast

This mode does not invert the luminance of the site. It only lowers the contrast. Useful for sites that are mostly dark but have large, bright sections that are distracting.


This mode does not invert the luminance of the site. It lowers the brightness only.


The latest release is always available on the Chrome Web Store. Search for "Deluminate". Deluminate always supports the latest stable version Chome.