accessibility

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Accessibility improvements for npmjs.com

Many accessibility improvements have been deployed to npmjs.com. Highlights include:

  • Site-wide improvements to color contrast, text resize, and support for users with low vision.
  • Improvements that enable keyboard-only access including visual tracking of the focus indicator.
  • Improved support for assistive technologies including screen readers.

Your feedback is welcome! Please share feedback on the accessibility community discussions page and learn more about GitHub accessibility at accessibility.github.com.

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Light and dark theme color contrast improvements

a11y contrast improvement

We improved the color contrast of our default light and dark themes on github.com, making them accessible to all users. These changes were made to Primer, GitHub's Design System, as part of our commitment to making GitHub inclusive to all developers. Visit accessibility.github.com for more information.

The VS Code light and dark themes will also be updated to match these changes.

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Accessibility improvements for the contribution graph

The contribution graph now supports keyboard interaction and compatibility with assistive technologies. Users can navigate the graph and filter contributions using the keyboard. While navigating the graph, a summary of each day is displayed visually in a tooltip and announced by screen readers.

Image of a Contribution Graph with the contributions done on June 16 showing in a tooltip

Users can move keyboard focus to the contribution graph and then navigate it using the following commands:

  • Press arrow keys to navigate cell by cell
  • Press Page Up to navigate to the first cell in a column
  • Press Page Down to navigate to the last cell in a column
  • Press Home to navigate to the first cell in a row
  • Press End to navigate to the last cell in a row
  • Press Enter to filter content in the Contribution Activity section by the current cell

If the user is running a screen reader, it will announce the following text when the graph receives keyboard focus:

Contribution Graph, table, 54 columns, 8 rows.
User activity over 1 year of time. Each column is one week, with older weeks to the left. Select a cell to filter the "Contribution Activity" section.

When the user navigates to a cell, the screen reader will read a summary such as:

11 contributions on Monday, February 21, 2022.

We are excited to make one of our favorite GitHub features available to more users! If you encounter any issues with these changes, please leave a reply on this feedback discussion.

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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.

Share feedback

 

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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.

Share feedback

 

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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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