regex101: HTML image tag src

Regular Expression

<img.*?src="([^"]*)"[^>]*>(?:</img>)?

New

<b>More</b> <strike>formatting</strike> and stuff<br><br><p class="image-placeholder"><img src="http://test.com/image1.gif" alt="" class="" style="width: 100%" title="">Text <b>after</b> image<i></i></p> src is cool

<img alt="" class="" src="http://test.com/image2.gif" style="width: 100%" title=""></img>