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Customizer Browser History

Sync browser URL in Customizer with current preview URL and focused panels, sections, and controls.

This is a feature plugin intended to implement #28536: Add browser history and deep linking for navigation in Customizer preview

This plugin keeps the Customizer URL in the browser updated with current previewed URL as the url query param and current expanded panel/section/control as autofocus params. This allows for bookmarking and also the ability to reload and return go the same view (which is great for developers), including which device you are previewing (desktop, tablet, or mobile). Not only will the URL be kept in sync with the current customizer UI, but new browser history entries will be added as you navigate around the site in the preview (via history.pushState()), allowing you to use the back/forward buttons as you would normally when browsing the site outside the customizer. The scroll position for each previewed URL is tracked as well, so that when you navigate back/forward the scroll position will be restored, just as happens when browsing the site outside the customizer preview. Restoring the scroll position also works when reloading the customizer, as the position is persisted in a scroll query parameter: again, this is extremely useful during development.

This plugin complements well the Customize Snapshots plugin which allows you to save your Customizer state in a shapshot/changeset with an associated UUID that also gets added to the browser URL in the Customizer.

For example, if you load the Customizer and then click the “Site Identity” section, the URL will be replaced to add autofocus[section]=title_tagline.

If you navigate into the nav menus panel, open a menu section, and then expand a nav menu item control, then the URL will have these autofocus params added:


And while these changes to the autofocus params are being made in the browser's URL as the Customizer UI is interacted with, if you navigate to another page in the preview the url parameter will also be replaced to reflect the new preview URL.

Note that the url param will be URL-encoded. So a typical Customizer URL would get updated to look like:

Development of this plugin is done on GitHub. Pull requests welcome. Please see issues reported there before going to the plugin forum.

Author Weston Ruter
Contributors xwp, westonruter
Tags customize, customizer


Prevent dropping non-home initial url param when loading customizer. See #19.


Fix compatibility with WordPress 4.6. See #17.


Ensure changeset_uuid param is added to customize.php URL if state is dirty OR the changeset post exists. PR #16.


Only include one autofocus param. If autofocus[control] is present, skip including autofocus[section] (since implied). Likewise, if autofocus[section] is present, also exclude its containing autofocus[panel] since it is also implied. By only including one autofocus param the URL bar is less cluttered, but also an issue is fixed where focus may not reliably be added due to apparent inconsistencies in which construct is autofocused first (the control should really be the last to get focus).


Send scroll message to previewer to fix 4.7 scroll position.


Misc cleanup and improve integration with WP 4.7.


Fixed issue whereby an expanded widget control could persist its autofocus param when another section is expanded.


  • Added persistence of scroll position when navigating back/forward in the preview and when reloading the customizer.
  • Renamed the customize_previewed_device query param to just device.
  • Improved the building of the URL query params to omit any params that are the same as the defaults, so device=desktop and scroll=0 should not be shown, nor should a url that points to the home URL.
  • Fixed dropping of value-less query params, e.g. customize.php?debug


  • Add back/forward browser history for navigation in the Customizer preview. See #2, PR #8.
  • Eliminate initial insertion of url and customize_previewed_device params when same as default.


Persist the device being previewed (desktop, tablet, mobile) in the URL via a new customize_previewed_device query param. See #3.


Remove autofocus[control] when there is not a section expanded, such as when a widget is expanded when the sidebar section is collapsed.


Initial release.

Version 0.4.7

Requires WordPress version: 4.6.0 or higher

Compatible up to: 4.7.2

Last Updated 25 Jan 2017

Date Added: 15 Jul 2016

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