Find and Replace multiple digits with the last character in notepad++

Does anyone know how to replace several different Digits all at once in notepad++.

For example, I have 4 different Digits;

1000x1000.jpg
750x750.jpg
1000x750.jpg
750x1000.jpg

I want the result like this:

1000x1000.jpg 1000
650x550.jpg 650
1200x850.jpg 1200
350x1300.jpg 350

I was trying to select each first digit and make them in groups with this Regex:

([0-9]{4}x+[0-9]{4}.jpg)|([0-9]{3}x+[0-9]{4}.jpg)|([0-9]{3}x+[0-9]{3}.jpg)|([0-9]{4}x+[0-9]{3}.jpg)

But I can’t replace them after .jpg

>Solution :

You can use

^(\d+)x\d+\.jpg$

Replace with $0 $1.

See the regex demo. Details:

• ^ – start of string
• (\d+) – Group 1 ($1): one or more digits
• x – an x char
• \d+ – one or more digits
• \.jpg – a .jpg string
• $ – end of string (line here, in Notepad++).

Note that $0 is a backreference to the whole match value. $1 refers to Group 1 value.

Regex variations

If the match does not fit the whole line, use either word (\b(\d+)x\d+\.jpg\b) or numeric/word ((?<!\d)(\d+)x\d+\.jpg\b) boundaries.

See demo: