#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?mi)^(.*\/thumb\/[0-9a-f]\/[0-9a-f]{2})\/([^\/]+\.(jpg|jpeg|png|gif))\/\d+px-(\2)"
Local $sString = "https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Royal_tyrrell_entrance.JPG/800px-Royal_tyrrell_entrance.JPG" & @CRLF & _
"" & @CRLF & _
"https://upload.wikimedia.org/wikipedia/commons/6/6d/Royal_tyrrell_entrance.JPG" & @CRLF & _
"" & @CRLF & _
"https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Royal_tyrrell_entrance.jpg/800px-Royal_tyrrell_entrance.jpg" & @CRLF & _
"" & @CRLF & _
"https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Royal1000tyrrell_entrance.jpeg/800px-Royal1000tyrrell_entrance.jpeg" & @CRLF & _
"" & @CRLF & _
"https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Royal_tyrrell_entrance.png/800px-Royal_tyrrell_entrance.png" & @CRLF & _
"" & @CRLF & _
"https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Royal_tyrrell_entrance.gif/800px-Royal_tyrrell_entrance.gif" & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Flag_of_Canada.svg/30px-Flag_of_Canada.svg.png 1.5x" & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Royal_Tyrrell_Museum.JPG/220px-Royal_Tyrrell_Museum.JPG" & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Royal_Tyrrell_Museum.JPG/330px-Royal_Tyrrell_Museum.JPG 1.5x" & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Royal_Tyrrell_Museum.JPG/440px-Royal_Tyrrell_Museum.JPG 2x" & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" " & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x" & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/9/91/Joseph_Burr_Tyrrell_bust.jpg/220px-Joseph_Burr_Tyrrell_bust.jpg" & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/9/91/Joseph_Burr_Tyrrell_bust.jpg/330px-Joseph_Burr_Tyrrell_bust.jpg 1.5x, " & @CRLF & _
"" & @CRLF & _
"//upload.wikimedia.org/wikipedia/commons/thumb/9/91/Joseph_Burr_Tyrrell_bust.jpg/440px-Joseph_Burr_Tyrrell_bust.jpg 2x" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
"" & @CRLF & _
""
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH)
Local $aFullArray[0]
For $i = 0 To UBound($aArray) -1
_ArrayConcatenate($aFullArray, $aArray[$i])
Next
$aArray = $aFullArray
; Present the entire match result
_ArrayDisplay($aArray, "Result")
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm