Registry Preview

PowerToys Registry Preview simplifies the process of visualizing and editing complex Windows Registry files. It can also write changes to the Windows Registry.

Getting started

Enable

To start using Registry Preview, enable it in the PowerToys Settings.

How to activate

Select one or more .reg files in Windows File Explorer. Right-click on the selected file(s) and select Preview to open Registry Preview. On Windows 11: select Show more options to expand the list of menu options. Registry Preview can also be opened from PowerToys Settings.

Note: Currently, there is a 10MB file limit for opening Windows Registry files with Registry Preview. It will show a message if a file contains invalid content.

How to use

After opening a Windows Registry file, the content is shown. This content can be updated at any time.

On the other side there is a visual tree representation of the registry keys listed in the file. This visual tree will be updated on each file content change inside the app.

Select a registry key in the visual tree to see the values of that registry key below it.

Select Edit to open the file in Notepad.

Select Reload to reload file content in case the file is changed outside of the Registry Preview.

Select Write to registry to save the data listed in the Preview to the Windows Registry. The Windows Registry Editor will ask for confirmation before writing data.

Select Open key to open the Windows Registry Editor with the location of the key you have highlighted in the treeview as the initial starting point.