A very little script to blur the content of Trello cards for taking screenshots and showing what your board looks like.
Add the bookmarklet by selecting and dragging it to your bookmarks bar. Then go to your Trello Board and click the bookmark to toggle the blurness.
javascript:if($('.list-card-title').hasClass('blurTitle')){$('.list-card-title').css({"color":"black","text-shadow":"none"}).removeClass('blurTitle');}else{$('.list-card-title').css({"color":"transparent","text-shadow":"0 0 10px black"}).addClass('blurTitle');};void 0;