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* fix: added parts of website * fix: removed unnecessary lines * fix: updated contributing.md * fix: added parts of sidebar * fix: added all APIs * fix: added version 10.0.0 Co-authored-by: Jack Franklin <jacktfranklin@chromium.org>
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Home > puppeteer > Page > emulateVisionDeficiency
Page.emulateVisionDeficiency() method
Simulates the given vision deficiency on the page.
Signature:
emulateVisionDeficiency(type?: Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']): Promise<void>;
Parameters
| Parameter | Type | Description |
|---|---|---|
| type | Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type'] | the type of deficiency to simulate, or 'none' to reset. |
Returns:
Promise<void>
Example
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.goto('https://v8.dev/blog/10-years');
await page.emulateVisionDeficiency('achromatopsia');
await page.screenshot({ path: 'achromatopsia.png' });
await page.emulateVisionDeficiency('deuteranopia');
await page.screenshot({ path: 'deuteranopia.png' });
await page.emulateVisionDeficiency('blurredVision');
await page.screenshot({ path: 'blurred-vision.png' });
await browser.close();
})();