No PDF created after printToPDF

[oliverini]

I have your Basic Usage demo working with the addition of the necessary autoload and use classes, but nothing happens on printToPDF. No PDF is created. $devtools->page()->printToPDF($ctx, PrintToPDFRequest::make()) returns a PrintToPDFResponse Object with data. I've tried saving that data using file_put_contents but it's not a valid PDF. Am I missing something?

[oliverini]

Solved this as follows: The PrintToPDFResponse Object data is base64 encoded (see https://chromedevtools.github.io/devtools-protocol/tot/Page/#method-printToPDF) so all I was missing was to decode it before saving, so for anyone wanting a working example you have this...

First install with composer...

composer require jakubkulhan/chrome-devtools-protocol

Then this saves a PDF...

require_once "vendor/autoload.php";

use ChromeDevtoolsProtocol\Context;
use ChromeDevtoolsProtocol\Instance\Launcher;
use ChromeDevtoolsProtocol\Model\Page\NavigateRequest;
use ChromeDevtoolsProtocol\Model\Page\PrintToPDFRequest;

// context creates deadline for operations
$ctx = Context::withTimeout(Context::background(), 30 /* seconds */);

// launcher starts chrome process ($instance)
$launcher = new Launcher();
$instance = $launcher->launch($ctx);

try {
    // work with new tab
    $tab = $instance->open($ctx);
    $tab->activate($ctx);

    $devtools = $tab->devtools();
    try {
        $devtools->page()->enable($ctx);
        $devtools->page()->navigate($ctx, NavigateRequest::builder()->setUrl("https://www.google.com/")->build());
        $devtools->page()->awaitLoadEventFired($ctx);

        $response = $devtools->page()->printToPDF($ctx, PrintToPDFRequest::make());
        file_put_contents('sample.pdf', base64_decode( $response->data ));

    } finally {
        $devtools->close();
    }

} finally {
    $instance->close();
}

[mikeyaa]

I was using the basic example as well and could not get a screenshot generated with:

$response = $devtools->page()->captureScreenshot($ctx, CaptureScreenshotRequest::builder()->setFormat("jpg")->setQuality(95)->build());

The response data is an empty string. It should also be base64 encoded. Any suggestions?

[albi90]

The basic sample for screenshot is incorrect you need to use "jpeg" in the setFormat not "jpg"