Can we use screen media when printing web page using headless chrome

[prakashvis...@gmail.com]

Hi Everyone,

I'm converting web page to PDF using prebuilt chrome headless browser in command line, but it always uses print media type to render the webpages in PDF document. But I need to print the webpages with screen media type. Is there any option to enable or disable print/screen media type when generating PDF. 

Regards,

Prakash V

[Eric Seckler]

You can use Emulation.setEmulatedMedia to achieve this, but note that printing with screen media type is not an officially supported configuration - you may see some incorrectly rendered content when doing this.

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[prakashvis...@gmail.com]

Hi Eric,

Thanks for your update.

I'm using pre built headless to print the PDF, how do I set the Emulation.setEmulatedMedia in command line.

[Eric Seckler]

There is no way to set this from the command line, sorry. You'll have to use the DevTools protocol (e.g. using --remote-debugging-port=9222 or --remote-debugging-pipe). Puppeteer might be an alternative, too, if you don't want to write your own DevTools protocol client implementation.

To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/headless-dev/9a08f844-c784-42fe-af71-587bb4ed019d%40chromium.org.

[teo.et...@gmail.com]

Definitely there should be a option to disable the screen media type to be print. A lot of pages has unoptimised print.css that just destroy the page.

A simple parameter would to the job.