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              <h1>Bookmarklet to make the text between 45 and 75 characters turn red.</h1>

<p><a class="bookmarklet-link" href="javascript:(function(){function%20loadScript(a,b){var%20c=document.createElement('script');c.type='text/javascript';c.src=a;var%20d=document.getElementsByTagName('head')[0],done=false;c.onload=c.onreadystatechange=function(){if(!done&&(!this.readyState||this.readyState=='loaded'||this.readyState=='complete')){done=true;b()}};d.appendChild(c)}loadScript('//ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js',function(){

var redOutline={outline:'2px solid red'},text;var textyElements='p, li, dt, dd, h1, h2, h3, h4, h5, h6';$(textyElements).on('mouseover.red',function(){$(this).css(redOutline)}).on('mouseleave.red',function(){$(this).removeAttr('style')}).on('click.red',function(){text=$(this).text();var e=text.substring(0,45);var t=text.substring(45,75);var n=text.substring(75,text.length);var r=e+'<span style=\'color: red;\'>'+t+'</span>'+n;$(this).html(r);$(textyElements).off('mouseover.red mouseleave.red click.red');$(this).removeAttr('style');})

&larr; Click that. Then hover over a text element and click that.

<p>Drag it to your Bookmarks bar to save.</p>

<p>Why? Because that's generally the ideal line length for body copy. When those characters are red you can adjust media queries and font-size and stuff until it's about right at any screen size.</p>

<p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est. Mauris placerat eleifend leo.</p>

<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Velit amet distinctio ab minus repudiandae earum similique sapiente eos maiores illo ut veniam nisi incidunt quaerat ipsam cum ducimus animi id autem illum. Aliquid consequatur a optio illum blanditiis earum error voluptates suscipit in dignissimos facilis ab perferendis modi itaque ullam nam nostrum laborum velit vero est maiores iste quae nesciunt deserunt qui natus aut laudantium magnam neque fugiat animi accusamus eum dolorem? Accusantium earum beatae minus aspernatur recusandae enim unde qui veniam accusamus atque voluptate numquam! Dignissimos aut aspernatur quae enim ab animi deserunt possimus blanditiis cupiditate nobis incidunt velit.</p>
              /* Mobile First */
body {
  font-family: "Lucida Grande", sans-serif;
  margin: 20px auto;
  width: 95%;
  font-size: 70%;
  line-height: 1.4;
@media (min-width: 400px) {
  body { width: 90%; font-size: 75%; }
@media (min-width: 700px) {
  body { width: 80%; font-size: 90%; }
@media (min-width: 850px) {
  body { width: 70%; font-size: 100%; }
@media (min-width: 1000px) {
  body { width: 60%; font-size: 110%; }
@media (min-width: 1100px) {
  body { width: 50%; font-size: 115%;}
@media (min-width: 1450px) {
  body { width: 40%; font-size: 125%; }

p {
  margin: 0 0 1.4rem 0;

.bookmarklet-link {
  border-radius: 4px;
  background: linear-gradient(#eee, #ccc);
  padding: 5px 10px;
  border: 1px solid #999;
  color: #222;
  text-decoration: none;
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