Add transparent background option instead white

[andremacola]

Here an example how to on src/index.js

  relaxedGlobals.puppeteerPage = await browser.newPage()
  relaxedGlobals.puppeteerPage._emulationManager._client.send(
    'Emulation.setDefaultBackgroundColorOverride',
    { color: { r: 0, g: 0, b: 0, a: 0 } }
  );

[DanielRuf]

Hi, can you deacribe the usecase that you want to cover with this?

I think adding this and more of the many Puppeteer options is not a good idea.

There should be a config object to set this and others which are used by Puppeteer.

[andremacola]

Hi @DanielRuf sorry for the delay. Well, I'm developing an automated newspaper system using puppeteer with relaxed and one of the workflow process is generating the PDF than change to CMYK colors with our print profiles. After that a person responsible for printing the steel plate "marry" the pdf pages of the newspaper using an appropriate software.

For this last step, is better using the PDF's with transparent backgrounds, with no white rectangle.

I'm sorry if it seems confusing.