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Getting a screenshot of an iframe

I've been having trouble trying to take a screenshot of only what's inside an iframe. I can access items inside the frame by using:

const frame = this.page.frame({ name: "frame1", url: this.regex });

But after that nothing works. Does anyone know how to do this?

This thread is trying to answer question "How can I take a screenshot of what's inside an iframe?"

1 reply
refactoreric

Hi, since v1.17, dealing with frame objects directly should be avoided. Framelocators are more flake-resistant. Here's the release notes for that: https://playwright.dev/docs/next/release-notes#frame-locators

I think you can do something like await page.frameLocator(...).locator('body').screenshot({ path: 'screenshot.png' });

https://playwright.dev/docs/api/class-framelocator https://playwright.dev/docs/screenshots#element-screenshot

Answer

Capturing Screenshots of iframes with Playwright

First, identify the iframe element using a unique identifier such as its class or label. For example, if the iframe has a class of "frame-class", you can locate it using Playwright's frameLocator method:

const frame = page.frameLocator('.frame-class');

Next, interact with the iframe's elements. For instance, if there's an input field labeled "User Name", fill it in like so:

const username = await frame.getByLabel('User Name');
await username.fill('John');

Now, let's capture a screenshot. Playwright offers various options for this. You can save it to a file or get it as a buffer for further processing.

To save the screenshot to a file named "screenshot.png", use:

await page.screenshot({ path: 'screenshot.png', fullPage: true });

If you want the image as a buffer for further processing, use:

const buffer = await page.screenshot();

You can then manipulate this buffer or pass it to third-party pixel diff facilities.

Remember, these instructions are specific to Playwright. For more tips on efficient Playwright test scripts, check out this blog post.

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