Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, 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

freeze screen zoom

  • 10 replies
  • 18 have this problem
  • 63 views
  • Last reply by Happy112
  • Solved

How do I "freeze" the screen zoom size to 80%? I tried deleting the xulstore.json file and it still goes to 100% (too big). I also tried the add on No Squint and that worked for a while and now does not.

How do I "freeze" the screen zoom size to 80%? I tried deleting the xulstore.json file and it still goes to 100% (too big). I also tried the add on No Squint and that worked for a while and now does not.

Chosen solution

You sure made me laugh .......  !

See you in a couple of days  !

Read this answer in context 👍 2

All Replies (10)

Hi  !

Would you give this a try :

Type in the address bar about:config (press Enter) (promise to be careful, if asked)

Type in the search bar and look fot the preference :

layout.css.devPixelsPerPx

You can set the value to 1.0 (default is -1) Adjust its value in 0.1 or 0.05 steps (1.1 or 0.9) until icons or text looks right. Modifying 'layout.css.devPixelsPerPx' affects user interface and web pages (global zoom).

Remember to close and restart Firefox after you've changed the value.


You could also consider this Webextension :

https://addons.mozilla.org/en-US/firefox/addon/zoom-page-we/

Another thing you could try in about:config :

Type in the search bar :

zoom.maxPercent and zoom.minPercent

And set the value to 80%

(then close and restart Firefox)

Thanks Happy112...I'll give them both a spin and let you know.

Tomface said

Thanks Happy112...I'll give them both a spin and let you know.

Take all the time you need - no rush  !

Well just did the first solution and while the toolbar is smaller (it's acceptable) the screen display size looks about right (at 1.0). I might play around with it, but it's better than having JUMBO SIZED EVERYTHING jumping out at me. Being older, you'd think I'd like the JUMBO EVERYTHING (eye-sight-wise), but JUMBO EVERYTHING is (for me) very annoying.

Let's keep this open for a couple days and I'll keep you posted.

Thanks again!

Modified by Tomface

Chosen Solution

You sure made me laugh .......  !

See you in a couple of days  !

Hello Happy122...between the 2 solutions you offered, I think I'm in a better position than I was before (it was like watching a 55" TV at 3FT away). That being the case, I've marked the issue as solved.

Thanks again for your help. It IS APPRECIATED. Have a great day.

Tom

Modified by Tomface

You're very welcome, Tom - I'm glad that things are easier on your eyes now. I haven't clue which of the two suggestions worked for you, but as long as you're happy - I'm happy (pun intended). You have a great day as well  !

Happy112 said

You're very welcome, Tom - I'm glad that things are easier on your eyes now. I haven't clue which of the two suggestions worked for you, but as long as you're happy - I'm happy (pun intended). You have a great day as well  !

I'm actually using a combination of the 2....fine tuning it.

Tomface said

I'm actually using a combination of the 2....fine tuning it.

Makes perfect sense  !