JSFiddle - React, Tailwind, and code Playground

HTML

<pre>STARTLIST</pre>

<pre id="output"></pre>

<pre>ENDLIST</pre>

JavaScript

var imglst = '0000000100000002000000030000000400000005';

var c = 0;
for (var i = 0, len = imglst.length; i < len; i++) {
    document.getElementById('output').innerHTML += imglst[i];
    if (c / 7 == 1) {
        document.getElementById('output').innerHTML += '.tif \n';
        c = 0;
    } else {
        c++;
    }
}