How to remove all characters except digits in Notepad++

Sometimes you need to remove all characters except digits in a text. In this article, we will look at how to do this using Notepad++. Notepad++ Download

Launch Notepad++ and open the file from which you need to remove all characters except digits. To do this, click File -> Open and select the desired file.

To remove characters, we will use the search and replace function. Press Ctrl + H or select Search -> Replace in the menu.

Search and replace settings

In the opened window, go to the Replace tab.
In the Find: field, enter the following regular expression:
```
[^\d]+
```
Leave the Replace with: field empty.
Make sure the Regular expression option is selected in the Search Mode section.
Click the Replace All button to remove all characters except digits.

Example usage

Let's consider an example where you need to remove all letters from the string "abc123def456ghi789" and leave only digits:

Original string: abc123def456ghi789
Result: 123456789

Now you know how to quickly remove all characters except digits in Notepad++ using the search and replace function. This is a convenient and efficient way to process text.