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Contributions

You can contribute to and help Dark Reader in many ways. Read on below to learn how and thank you in advance.

Sponsor

Sponsor the development of Dark Reader.

Translation

Improve or suggest a translation. See the list of language codes that we can support.

Adding a website that is already dark

If a website is already dark and meets the following requirements:

  • The entire website, including all subpages, is dark by default, regardless of the system's preferred color scheme.
  • The URL is the actual website address. No redirects of any kind are allowed.
  • The website is complete and finished. Any website in the design or development phase or any other incomplete status is not permitted. These statuses can include any placeholder web pages or verbiage about coming soon, the website being under construction, the website having moved, etc.

Then you can add it to the dark-sites.config file.

Please maintain the alphabetical order of the websites listed in this file.

Fixing incorrect inversions

If any element on a web page is not inverted or styled correctly, you can fix it by specifying the appropriate CSS selector. Use the dynamic-theme-fixes.config file for Dynamic Theme mode and the inversion-fixes.config file for Filter and Filter+ modes.

Please maintain the alphabetical order of the websites listed, use short selectors, and preserve the code style in these files.

You can learn how to create a fix for the appropriate mode below.

How to use the Dev Tools

The Dev Tools help you fix minor issues on a web page. These can include a dark icon on a dark background, removing a bright background, adding a white background to a transparent image, etc.

In Dynamic mode, if the page looks partially dark and bright, it is considered a bug.

In Filter mode, it is a common practice to invert elements on the page that are already dark.

  • Open Chrome Dev Tools (F12) in Chrome or "Inspector" (Ctrl+Shift+C) in Firefox.
  • Click on element picker (top-left corner). It is enabled automatically in Firefox.
  • Pick an incorrectly inverted element.
  • Choose a selector for that element or all similar elements (for example, if it has class="icon small", the selector may look like .icon).
  • Click Dark Reader icon.
  • Click Open developer tools (at the bottom of the Dark Reader popup).
  • Edit or add a block containing the URL and selectors to invert.
  • Click Apply.
  • Check how it looks both in Light and Dark mode.
  • If the fix works open dynamic-theme-fixes.config file or inversion-fixes.config file.
  • Click Edit (login to GitHub first).
  • Insert your fix there. Preserve alphabetic order by URL.
  • Provide a short description of what you have done.
  • Click Propose file change.
  • Review your changes. Click Create pull request.
  • GitHub actions will run tests to make sure it has the right code style.
  • If you see a red cross, click Details to see what is wrong and edit the existing Pull Request.
  • When you see a green checkmark then everything is fine.
  • A Dark Reader developer will review and merge your changes, making them available.
dynamic-theme-fixes.config
================================

example.com

INVERT
.icon

CSS
.wrong-element-colors {
    background-color: ${white} !important;
    color: ${black} !important;
}

IGNORE INLINE STYLE
.color-picker

IGNORE IMAGE ANALYSIS
.logo
Rule Description Notes / Examples
INVERT Inverts specified elements. Dynamic Mode: INVERT only for dark images that are invisible on dark backgrounds.
CSS Adds custom CSS to a web page. !important keyword should be specified for each CSS property to prevent overrides by other stylesheets.
Dynamic mode supports ${COLOR} template, where COLOR is a color value before the inversion.
Example: ${white} will become ${black} in dark mode.
IGNORE INLINE STYLE Prevents inline style analysis of matched elements. Example: <p style="color: red"> element's style attribute will not be changed.
IGNORE IMAGE ANALYSIS Prevents background images from being analyzed for matched selectors.

Adding a new color scheme

If you can add a new popular or unique but usable predefined color scheme to Dark Reader, you can add it to the src/config/color-schemes.drconf file. Please use the following steps to add a new color scheme:

  • Open color-schemes.drconf file.
  • Click Edit (login to GitHub first).
  • Insert your fix there. Preserve alphabetic order by Color scheme name.
  • Provide a short description of what you have done.
  • Click Propose file change.
  • Review your changes. Click Create pull request.
  • GitHub actions will run tests to make sure it has the right code style.
  • If you see a red cross, click Details to see what is wrong and edit the existing Pull Request.
  • When you see a green checkmark then everything is fine.
  • A Dark Reader developer will review and merge your changes, making them available.

Dynamic variables

When making a fix for background or text colors, instead of using hardcoded colors (like #fff, #000, black or white), please use CSS variables that are generated based on the user settings:

dynamic-theme-fixes.config
================================
example.com

CSS
.logo {
    background-color: var(--darkreader-neutral-background) !important;
}
.footer > p {
    color: var(--darkreader-neutral-text) !important;
}

Here is a full table of available CSS variables:

Variable Description Use
--darkreader-neutral-background Neutral background color that
corresponds to the user's settings.		 Mostly used for elements that have
the wrong background color.
--darkreader-neutral-text Neutral text color that
corresponds to the user's settings.		 Used for elements with the wrong text color.
--darkreader-selection-background The text color setting
defined by the user.		 The user's Text Color setting.
--darkreader-selection-text The background color setting
defined by the user.		 The user's Background Color setting.

Fixes for Filter and Filter+ mode

inversion-fixes.config
================================

example.com

INVERT
.icon
.button
#player

NO INVERT
#player *

REMOVE BG
.bg-photo

CSS
.overlay {
    background: rgba(255, 255, 255, 0.5);
}
  • Filter and Filter+ work by inverting the entire web page and reverting necessary elements (images, videos, etc.) listed in the INVERT section.
  • If an inverted element contains images or other content that becomes incorrectly displayed, use the NO INVERT rule.
  • REMOVE BG removes the background image from an element and forces a black background.

Adding new features or fixing bugs

If you would like to add a new feature to Dark Reader or fix a bug, submit an issue in GitHub (if there is no existing one), discuss it with active contributors, and wait for approval.

To build and debug the extension install the Node.js LTS version. Install development dependencies by running npm install in the project root folder. Then execute npm run debug.

Chrome and Edge

  • Open the chrome://extensions page.
  • Disable the official Dark Reader version.
  • Enable the Developer mode.
  • Click Load unpacked extension button.
  • Navigate to the project's build/debug/chrome folder.

Firefox

  • Open the about:addons page.
  • Disable the official Dark Reader version.
  • Open the about:debugging#addons page.
  • Click the Load Temporary Add-on button.
  • Open the build/debug/firefox/manifest.json file.

If you execute npm run debug:watch instead of npm run debug, it will automatically recompile after making any code changes.

Tips

You can use any text editor or web IDE (for example, Visual Studio Code or WebStorm) for editing the code.

Please preserve the code style (for example, whitespaces, etc.). It can be done automatically by executing npm run code-style.

Run tests by executing npm test to verify it will pass.

If your code is ready to be reviewed and merged, you can submit a pull request and wait for a review.