How to add a space after every third character in strings in Notepad++

In this article, we will discuss how to add a space after every third character in strings in Notepad++. Notepad++ Download

Open the file where you need to add spaces or paste the text into a new file.
Press Ctrl+H to open the Find and Replace window.
In the Find field, enter the following regular expression:
```
.{3}
```
This regular expression matches any sequence of three characters.
In the Replace with field, enter:
```
$0 
```
Here, $0 represents the found sequence of characters, and a space is added immediately after it.
Make sure the Regular expression checkbox is checked at the bottom of the window.
Click the Replace All button to apply the changes to the entire text in the file.

Example:

Let's consider an example. Suppose we have a string:

abcdefghijklmno

After performing the replacement as described above, the string transforms into:

abc def ghi jkl mno

Each group of three characters is now separated by a space.