Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Print page margins in mm or inches

  • 1 reply
  • 0 have this problem
  • Last reply by Paul

more options

Ffx 147.0 / Mac OS Tahoe 26.2 / HP printers

Print dialog page margin custom values appear in mm only. No option for inches here.

As recommended years ago for earlier Mac OS and Ffx versions, I've tried the about:config dialog. Changed several universal page margin unit settings from 1 (mm) to 0 (inches), and also or my specific printers, for top, bottom, left and right. Also have tried to disable "unwriteable margins" settings, universal and printer-specific.

But the Print dialog Margins|custom (mm) seems to be hard wired, so not responding to changes in configuration settings.

Also have ensured that all Mac system measurement specs (Language, Region) are US and not metric.

Any ideas will be appreciated.

Ffx 147.0 / Mac OS Tahoe 26.2 / HP printers Print dialog page margin custom values appear in mm only. No option for inches here. As recommended years ago for earlier Mac OS and Ffx versions, I've tried the about:config dialog. Changed several universal page margin unit settings from 1 (mm) to 0 (inches), and also or my specific printers, for top, bottom, left and right. Also have tried to disable "unwriteable margins" settings, universal and printer-specific. But the Print dialog Margins|custom (mm) seems to be hard wired, so not responding to changes in configuration settings. Also have ensured that all Mac system measurement specs (Language, Region) are US and not metric. Any ideas will be appreciated.
Attached screenshots

All Replies (1)

more options

Hi,

The people who answer questions here, for the most part, are other users volunteering their time (like me), not Mozilla employees or developers. When a Mozilla employee jumps into a discussion, you'll see the Mozilla staff label next to their name.

If you want to leave feedback for developers, you can go to the Firefox Help menu and select Share ideas and feedback…. Alternatively, you can use this link. Your feedback is collected by a team that reads it and gathers data on the most common issues.

You can also file a bug report or feature request. See File a bug report or feature request for Mozilla products for details.

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.