Firefox prints blank pages? Check the preview first

Make sure the page range includes the content you need. Under More settings, try Simplified format if it is available, and check that it keeps the part you want to print. If the same page is blank in another browser but other websites preview normally, the website’s print layout is a likely cause. Look for a printable version of that page.

Print the saved PDF using your usual PDF viewer. If that also comes out blank, try a known good document on the same printer. When that fails too, use the printer maker’s troubleshooting for blank output. A PDF with the expected content confirms that Firefox could render the page to that destination.

Open about:support in Firefox. In the Printing section, choose Clear saved print settings and open Print again. This clears modified Firefox print preferences, so note any custom settings you want to reuse. Retest a simple page and then the original page before sending another job.