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Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.

Open source

emulateVisionDeficiency(type)

This emulates your website with the specified vision deficiency type.

The supported types are:

  • none: default.
  • blurredVision: where vision is less precise.
  • protanopia: the inability to perceive any red light.
  • deuteranopia: the inability to perceive any green light.
  • tritanopia: the inability to perceive any blue light.
  • achromatopsia: the inability to perceive any color except for shades of grey (extremely rare).

Example

JavaScript
import { browser } from 'k6/experimental/browser';

export const options = {
  scenarios: {
    browser: {
      executor: 'shared-iterations',
      options: {
        browser: {
          type: 'chromium',
        },
      },
    },
  },
};

export default async function () {
  const page = browser.newPage();

  await page.goto('https://test.k6.io/browser.php');
  page.emulateVisionDeficiency('blurredVision');
}