When you change themes multiple times in WordPress, you may encounter cases where unexpected widgets appear in the sidebar.
Particularly, while the existing site only had search and recent posts, after installing a different theme and then returning to GeneratePress, issues can occur where previously non-existent widgets are added or the same widgets appear in duplicate.
In such cases, it is not a problem with the theme itself, but rather you must first check WordPress’s widget area and the default widget handling method provided by the theme.

What is a Sidebar in GeneratePress?
A sidebar is a space that displays a separate content area on the right or left side of the main blog content.
Generally, you can insert the following widgets:
Search Recent Posts Recent Comments Categories Tags Archives Custom HTML Advertisements Other Plugin Widgets
On an informational blog, the sidebar can be useful, but if you want to focus on the main content, you can remove it altogether.
How to Remove the Sidebar across the Entire Site
According to official GeneratePress documentation, sidebar settings can be managed in Appearance → Customize → Layout → Sidebars.
Here, there are sidebar layout settings that apply to general pages, blog/archives, and single posts.
To remove the sidebar from the entire site, configure it as follows:
Appearance → Customize → Layout → Sidebars
Set the necessary area here to
Content (no sidebars)
Layouts such as Content/Sidebar, Sidebar/Content, and Content (no sidebars) are provided in GeneratePress.
However, What if You Want to Keep the Sidebar and Only Clean Up the Widgets?
In this case, you must not remove the sidebar itself.
Instead, go into the WordPress widget settings and delete unnecessary widgets.
Generally, from the admin menu, go to
Appearance → Widgets
and check the Sidebar area.
The list of widgets actually being displayed will appear here.
For example, if it is configured like this:
Search Recent Posts Recent Posts Recent Comments Categories
Leave only what is necessary and delete the rest.
Why Widgets Get Duplicated After Changing Themes
In WordPress, changing a theme does not simply change colors and design.
The widget areas available and the default widget handling methods can differ from theme to theme.
Official GeneratePress documentation also explains that if a sidebar layout is selected but the user has not added widgets to the sidebar widget area, search and archive widgets can fill the space by default. When you add desired widgets to the sidebar, these default widgets are automatically removed.
Therefore, just because search or recent posts are visible on the screen, it does not necessarily mean that separate widgets are actually registered in duplicate.
Checking what items are actually contained in the widget area comes first.
What Should You Do If There Are Actually Duplicate Widgets?
First and foremost, check the sidebar in the admin screen.
For example, if there are two search widgets, delete one.
The same goes for the recent posts widget.
For an informational blog, you can configure it simply like this:
Sidebar
Search Recent Posts
Leaving just about this much is sufficient.
You can add advertisements or categories if necessary, but there is no need to unconditionally fill the sidebar with lots of information.
The Difference Between Keeping the Sidebar and Removing It
If you keep the sidebar, you can immediately provide visitors with other posts or a search function.
On the other hand, if you remove the sidebar, the main content area becomes wider and the page structure becomes simple.
Especially on mobile, because the desktop sidebar may move below the main content or be displayed in a different manner, if you have a blog with many mobile readers, you must check the actual mobile screen as well.
You Can Also Remove the Sidebar Only on Specific Posts
In cases where there is no need to remove the sidebar across the entire site, you can also change the layout of individual posts or pages.
GeneratePress supports specifying a layout different from the global settings by using the Layout metabox when editing individual pages and posts.
Therefore, it is also possible to operate differently, for example:
General posts → Right sidebar Important long posts → No sidebar Landing pages → Full width
Differences Between the Free Version and Paid Version
There is a part to be careful about here.
Not all layout control features of GeneratePress are identical to the free version.
In GP Premium, you can use the Layout feature in Elements to finely specify the layout of the entire site according to specific conditions. Official documentation also explains that this feature can be used to apply different sidebar layouts to specific categories, pages, etc.
However, just because you want to remove the sidebar or clean up basic widgets does not mean Premium is strictly required.
Important Points When Actually Cleaning Up Widgets
If the screen looks strange immediately after changing themes, rather than modifying CSS first or adding code, it is recommended to check in the following order:
Go to Appearance → Widgets Check the Sidebar area Check for duplicate widgets Delete unnecessary widgets Leave only necessary widgets Check on the actual site Clear cache if using a cache plugin Check on mobile as well
Following this order can reduce the possibility of modifying code unnecessarily.
Conclusion
If you want to remove the search or recent posts appearing on the right in GeneratePress, you do not unconditionally need to use CSS or modify theme files.
To remove the sidebar itself, select Content (no sidebars) in Customize → Layout → Sidebars, and to remove only duplicate widgets while keeping the sidebar, clean up the Sidebar area in Appearance → Widgets.
Particularly when returning to GeneratePress after installing other themes multiple times, checking the widget area first is the simplest solution.