We all know that the default wapka img bbcode tag does not display image above 20kb, with this js you can do so.

var msg=document.getElementsByName("d");for(var i=0;i&lt;msg.length;i++){var oldtext=document.getElementsByName(&quot;d&quot;)[i].innerHTML;var newtext=oldtext.replace(/(^|[\n ])([\w]+?:\/\/[^ ,\&quot;\n\r\t&lt;]*)/ig, &quot;$1<a href='$2'>$2</a>");newtext=newtext.replace(/\[img\](.+?)\[\/img\]/ig, "<a href='$1'><img src='$1' style='max-width:100%' /></a>"); document.getElementsByName("d")[i].innerHTML=newtext;}

Goto Edit Site>Wap2>Styles of content in forum/chat>set styles for own msg in forum>Enter first box, find ::msg:: and replace it with below code
</p><br />
<div>::msg::</div><br />
<p>

How to use:
1,
[img+]http://url of image you want to show in post[/img+]

Delete +
If this code be error pls use This link