accessibility

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Specify theme context for images in Markdown GA

You can now specify whether to display images for light or dark themes in Markdown, using the HTML <picture> element in combination with the prefers-color-scheme media feature.

For example:

<picture>
  <source media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/25423296/163456776-7f95b81a-f1ed-45f7-b7ab-8fa810d529fa.png">
  <img alt="Shows an illustrated sun in light color mode and a moon with stars in dark color mode." src="https://user-images.githubusercontent.com/25423296/163456779-a8556205-d0a5-45e2-ac17-42d089e3c3f8.png">
</picture>
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Specify theme context for images in Markdown (Beta)

You can now specify whether to display images for light or dark themes in Markdown, using the HTML <picture> element in combination with the prefers-color-scheme media feature.

For example:

<picture>
  <source media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/25423296/163456776-7f95b81a-f1ed-45f7-b7ab-8fa810d529fa.png">
  <img alt="Shows an illustrated sun in light color mode and a moon with stars in dark color mode." src="https://user-images.githubusercontent.com/25423296/163456779-a8556205-d0a5-45e2-ac17-42d089e3c3f8.png">
</picture>

An animated screenshot of an issue comment that changes the color mode. The content shows an octobiwan in light and stormtroopocat in dark color mode.

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Tritanopia Colorblind Theme Beta

A new Tritanopia colorblind theme for blue/yellow color blindness is now available to all github.com users in a public beta. Based on customer feedback, the previous Colorblind theme has been split into two themes: a Protanopia & Deuteranopia colorblind theme, and a Tritanopia colorblind theme. A Protanopia & Deuteranopia colorblind theme is now also available in beta. Navigate to the “Appearance” page in your profile settings to update your theme preferences.

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Protanopia & Deuteranopia Colorblind Themes Beta

New Protanopia & Deuteranopia colorblind themes for red/green color blindness are now available to all github.com users in a public beta. Based on customer feedback, the previous Colorblind theme has been split into two themes: a Protanopia & Deuteranopia colorblind theme, and a Tritanopia colorblind theme. This Protanopia & Deuteranopia colorblind theme is an update to the previous Colorblind themes. A Tritanopia colorblind theme is now also available in beta. Navigate to the “Appearance” page in your profile settings to update your theme preferences.

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Managing keyboard shortcuts using accessibility settings

You can manage your keyboard shortcuts using the new accessibility settings page.

Screenshot of the new accessibility settings page

You can choose to disable "character key shortcuts". This turns off keyboard shortcuts that only use single characters like s, g c, and . (the period key). Shortcuts which make use of modifier keys like command and control are not affected by this setting.

This feature prevents accidental triggering of keyboard shortcuts. This is important for people who use a keyboard and for people who use assistive technologies like voice input.

Read our documentation on managing accessibility settings.

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