#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = "(?sm)(^[a-zA-z0-9]{32})"
Local $sString = "2629f4a363e64a36bbd86c01dfac5168" & @CRLF & _
"ff29ac3148394d1bbbcf85a7d0fd27dd" & @CRLF & _
"c627930216bc439db8563451be4d8172" & @CRLF & _
"4ed84dd2bb68430e9c4d43884088b364" & @CRLF & _
"84ab4c45d2194651bfa6729ad81cdcb9" & @CRLF & _
"6fb2f2de90ab45f4976a699099d30697" & @CRLF & _
"2d80f4090d0244b4b92ce505874a5f95" & @CRLF & _
"f231e374e45a4f2da1b1dc2c6bcb5991" & @CRLF & _
"91d13e50695140a7b4d66a28880986ef" & @CRLF & _
"3ef3a3990b5e4870840068b500359fca" & @CRLF & _
"43fc4ca5d3a544a49aa0fb6d6e28ceb5" & @CRLF & _
"48e54b84562a41f98224773a163c3123" & @CRLF & _
"be7f7602169844138ef2a9ab66ac38b6" & @CRLF & _
"d2f3b5f91512431b86d943c89fa9b8c4" & @CRLF & _
"18ecb09cf4b94e4d91ec1b3efa97ea1f" & @CRLF & _
"f7ed1df9200543baac16b1e094278f52" & @CRLF & _
"f5b54666ccd84b3b905a5092aaf35a48" & @CRLF & _
"c6a224f88afe4ebc8943cab7aedd5d21" & @CRLF & _
"da180ef24522404598d69e8eb4f071c5" & @CRLF & _
"66ae5365d8294605a9cbb6124773d8c4" & @CRLF & _
"ba491533d84540e384b4e47280cbdded" & @CRLF & _
"d38e9d637dca4d6194ff860187ae9059" & @CRLF & _
"9113322aa1404a66ba28732ae59e603b" & @CRLF & _
"" & @CRLF & _
""
Local $sSubst = "<img src="https://vg05.met.vgwort.de/na/$1" width="1" height="1" alt="">"
Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst)
MsgBox($MB_SYSTEMMODAL, "Result", $sResult)
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