# Making the right edge of Firefox wider?

**URL:** <https://boards.straightdope.com/t/making-the-right-edge-of-firefox-wider/1023078>\
**Category:** Factual Questions\
**Created:** [September 16, 2025, 5:24am UTC](https://boards.straightdope.com/t/making-the-right-edge-of-firefox-wider/1023078 "2025-09-16T05:24:19Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![mixdenny](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mixdenny/32/2962_2.png) [@mixdenny](https://boards.straightdope.com/u/mixdenny)\
**Post date:** [September 16, 2025, 5:24am UTC](https://boards.straightdope.com/t/making-the-right-edge-of-firefox-wider/1023078/1 "2025-09-16T05:24:19Z")

</div>

The slide bar is really narrow and shrinks even further if the cursor is not hovering. Seems like it used to be wider.

---

<div class="post-metadata">

**Author:** ![BigT](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/bigt/32/12044_2.png) [@BigT](https://boards.straightdope.com/u/BigT)\
**Post date:** [September 16, 2025, 6:07am UTC](https://boards.straightdope.com/t/making-the-right-edge-of-firefox-wider/1023078/2 "2025-09-16T06:07:16Z")

</div>

It’s not doing it on mine, so I can’t test this, but supposedly you can fix it in about:config:

1. Type `about:config` into your address bar and press enter.
2. If necessary, click to say you’ll “Accept the Risk”.
3. search for the this setting: `layout.css.scrollbar-width-thin.disabled` and toggle it to true.

You may or may not then need to restart Firefox.

---

<div class="post-metadata">

**Author:** ![Reply](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/reply/32/15952_2.png) [@Reply](https://boards.straightdope.com/u/Reply)\
**Post date:** [September 16, 2025, 7:37am UTC](https://boards.straightdope.com/t/making-the-right-edge-of-firefox-wider/1023078/3 "2025-09-16T07:37:46Z")

</div>

You can also set `widget.non-native-theme.scrollbar.style` there to [make it mimic different operating systems’ scrollbar styles](https://github.com/WesleyBranton/Custom-Scrollbar/wiki/How-to-enable-wide-scrollbars-on-Firefox):

> ```
> 0 is the default value for your computer
> 1 is macOS
> 2 is Linux
> 3 is Android
> 4 is Windows 10
> 5 is Windows 11
> 
> ```

Setting it to `4` makes it look like Windows 10, which should be wider than most modern defaults:

[![](https://fightingignorance.org/c589466d-93c9-4d3a-b67e-70268cfc804c-making-the-right-edge-of-firefox-wider-factual-questions-straight-dope-message-board-september-16-12-33-14-am.gif) ](https://fightingignorance.org/c589466d-93c9-4d3a-b67e-70268cfc804c-making-the-right-edge-of-firefox-wider-factual-questions-straight-dope-message-board-september-16-12-33-14-am.gif)

And if that’s _still_ not wide enough, you can set `widget.non-native-theme.scrollbar.size.override` to something absurd, like `50`, to make it super wide:

[![](https://fightingignorance.org/f0a143e4-1e0c-44c0-9253-c1ed92b3d46d-how-to-enable-wide-scrollbars-on-firefox-wesleybrantoncustom-scrollbar-wiki-september-16-12-40-24-am.jpg) ](https://fightingignorance.org/f0a143e4-1e0c-44c0-9253-c1ed92b3d46d-how-to-enable-wide-scrollbars-on-firefox-wesleybrantoncustom-scrollbar-wiki-september-16-12-40-24-am.jpg)

That link has more details (again: [How to enable wide scrollbars on Firefox · WesleyBranton/Custom-Scrollbar Wiki · GitHub](https://github.com/WesleyBranton/Custom-Scrollbar/wiki/How-to-enable-wide-scrollbars-on-Firefox))

---

<div class="post-metadata">

**Author:** ![mixdenny](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mixdenny/32/2962_2.png) [@mixdenny](https://boards.straightdope.com/u/mixdenny)\
**Post date:** [September 16, 2025, 6:28pm UTC](https://boards.straightdope.com/t/making-the-right-edge-of-firefox-wider/1023078/4 "2025-09-16T18:28:46Z")

</div>

> [@BigT](#):
>
> It’s not doing it on mine, so I can’t test this, but supposedly you can fix it in about:config:

That didn’t work, in fact I had no scrollbar at all.

---

<div class="post-metadata">

**Author:** ![mixdenny](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mixdenny/32/2962_2.png) [@mixdenny](https://boards.straightdope.com/u/mixdenny)\
**Post date:** [September 16, 2025, 6:31pm UTC](https://boards.straightdope.com/t/making-the-right-edge-of-firefox-wider/1023078/5 "2025-09-16T18:31:21Z")

</div>

> [@Reply](#):
>
> ou can also set `widget.non-native-theme.scrollbar.style` there to [make it mimic different operating systems’ scrollbar styles](https://github.com/WesleyBranton/Custom-Scrollbar/wiki/How-to-enable-wide-scrollbars-on-Firefox):

This didn’t seem to work either. In Control Panel I set scrollbar to Always On and that did work and is now a wider bar as well. Maybe I had to restart one more time or something.

---

<div class="post-metadata">

**Author:** ![Reply](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/reply/32/15952_2.png) [@Reply](https://boards.straightdope.com/u/Reply)\
**Post date:** [September 16, 2025, 8:12pm UTC](https://boards.straightdope.com/t/making-the-right-edge-of-firefox-wider/1023078/6 "2025-09-16T20:12:47Z")

</div>

Great. Glad it worked.
