ClearType – Windows Blog by Brink

ClearType

Use ClearType Text Tuner to Improve Text Readability in Windows 11

ClearType is a software technology developed by Microsoft that improves the readability of text on existing LCDs (Liquid Crystal Displays), such as laptop screens, Pocket PC screens, and flat panel monitors. With ClearType font technology, the words on your computer screen look almost as sharp and clear as those printed on a piece of paper.

ClearType works by accessing the individual vertical color stripe elements in every pixel of an LCD screen. Before ClearType, the smallest level of detail that a computer could display was a single pixel, but with ClearType running on an LCD monitor, we can now display features of text as small as a fraction of a pixel in width. The extra resolution increases the sharpness of the tiny details in text display, making it much easier to read over long durations.

ClearType is a form of sub-pixel font rendering that draws text using a pixel’s red-green-blue (RGB) components separately instead of using the entire pixel. When the pixel is used in this way, horizontal resolution theoretically increases 300 percent.

Picture elements on an LCD screen are actually comprised of individual horizontally-oriented red, green and blue sub-pixels. For instance, an LCD screen that has a display resolution of 800×600 pixels actually has 2400×600 individual sub-pixels. The human eye is not capable of differentiating colors on such a small scale, so a combination of these three primary colors can emulate any intermediate color. Sub-pixel font rendering takes advantage of this by antialiasing at the sub-pixel level instead of at the pixel level.

This tutorial will show you how to use ClearType Text Tuner to improve text readability on each display for your account in Windows 10 and Windows 11.

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How to Enable or Disable Enhance Text Contrast in Microsoft Edge

Microsoft has improved font rendering in the latest Microsoft Edge Dev and Canary builds. Microsoft has improved the contrast enhancement and gamma correction to match the quality and clarity of other native Windows applications. Font rendering will also now respect user ClearType Tuner settings when applying text contrast enhancement and gamma correction.

To experiment with different values, run the ClearType Text Tuner. Note that Microsoft Edge must be restarted whenever the ClearType settings are changed, and that only the settings for your primary monitor are used.

This tutorial will show you how to enable or disable the Enhance Text Contrast flag for improving font rendering in Microsoft Edge.

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