Please enable JavaScript to use regex101
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Regular Expression
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<img.*?src=(?:\'|")?data:image\/(?:png|jpeg|jpg|gif);base64,([^\'"\s>]+)
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ig
Input 1
1
New
Hello, hello, hello <img src="data:image/png;base64,lkqhdklqbhjdkhlqjshdljhqsdhqslkjhdlqhdjlkqshdjlkhsq"> hello hello <img src="data:image/png;base64,ljshqflhsqjlkfhjqsfjlkqhs"> jhfqflsqjk more stuff. test test test <img src=data:image/png;base64,fhiewgjiewoghiewaghieoaieohigeoaehgieoaheigo alt="test?"> and more. <img src="http://example.com/image.png"> and more <img alt="test" src='data:image/jpg;base64,afejwioagjeoiwajgeiowjgoiewjgoejwgiewjgoewa' class="img border"> finally.
Substitution
Hello, hello, hello <img src="data:image/png;base64,lkqhdklqbhjdkhlqjshdljhqsdhqslkjhdlqhdjlkqshdjlkhsq"> hello hello <img src="data:image/png;base64,ljshqflhsqjlkfhjqsfjlkqhs"> jhfqflsqjk more stuff. test test test <img src=data:image/png;base64,fhiewgjiewoghiewaghieoaieohigeoaehgieoaheigo alt="test?"> and more. <img src="http://example.com/image.png"> and more <img alt="test" src='data:image/jpg;base64,afejwioagjeoiwajgeiowjgoiewjgoejwgiewjgoewa' class="img border"> finally.