Thank @jan_blaha very much! That did the trick!

"Full" solution for the benefit of others:

<script>
    window.onload = function() {
        window.JSREPORT_CHROME_PDF_OPTIONS = {
            height: (document.body.scrollHeight + 100).toFixed(0) + 'px',
        };
    };
</script>

* +100 is extra space for margins I'm using

I'm trying to generate a PDF (using chrome-pdf) to be printed on a receipt printer. This means that the paper size is 8cm wide and has practically infinite height. In order for the printout to print correctly I need to set the paper height to the height of the content. Otherwise, I get very long receipts with lots of white space.

The problem is that I can set the page width and height in template, which works fine, but I don't know what will be the height of generated receipt. I've tried so far to add a script to HTML template, which measures the page and adds a CSS rule with @page { size: ... }, but that gives me unpredictable and unexpected results (width is wrong, orientation sometimes changes, etc.).

Is there a way to add a script to a template that can access both HTML DOM to measure the content and configure JS Report page height?

Appreciate any help.

I'm using JS Report standalone executable (2.6.1) deployed as a Windows service. On one of the boxes, it failed to start with the following error in logs:

Error occured during reporter init Error: ENOENT: no such file or directory, open 'C:\Windows\TEMP\jsreport\compile\jsreport-2.6.1-HkSd-6jOS\chrome.zip'

The file was indeed missing in this directory. After I've remove the whole C:\Windows\TEMP\jsreport folder, the service worked correctly after restart.