# Open sidebar to the right by default. Possible?

**URL:** <https://discourse.mozilla.org/t/open-sidebar-to-the-right-by-default-possible/48005>\
**Category:** Development\
**Created:** [November 3, 2019, 12:07pm UTC](https://discourse.mozilla.org/t/open-sidebar-to-the-right-by-default-possible/48005 "2019-11-03T12:07:25Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![kjemmo](https://avatars.discourse-cdn.com/v4/letter/k/439d5e/32.png) [@kjemmo](https://discourse.mozilla.org/u/kjemmo)\
**Post date:** [November 3, 2019, 12:07pm UTC](https://discourse.mozilla.org/t/open-sidebar-to-the-right-by-default-possible/48005/1 "2019-11-03T12:07:25Z")

</div>

The sidebar opens in the left side of the screen by default. Is it possible to change this default the right side?

([https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/sidebar\_action](https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/sidebar_action))

---

<div class="post-metadata">

**Author:** ![jscher2000](https://sea1.discourse-cdn.com/flex001/user_avatar/discourse.mozilla.org/jscher2000/32/28202_2.png) [@jscher2000](https://discourse.mozilla.org/u/jscher2000)\
**Post date:** [November 4, 2019, 8:03pm UTC](https://discourse.mozilla.org/t/open-sidebar-to-the-right-by-default-possible/48005/2 "2019-11-04T20:03:55Z")

</div>

This is determined by the value of the preference **sidebar.position\_start** (true is left and false is right). I don’t know if there is a way to switch that position from an extension, or whether it would be appreciated by the user.