Tumblr Tip: Editing those 404 pages
One of the worst things with Tumblr is that you can’t edit those 404 pages… But with some simple jQuery, now you can!
Code:
$(document).ready(function() {
$("p:contains(The URL you requested could not be found.)").append(".");
});
What it does:
When the page loads, it checks to see if the Tumblr 404 text is there in the paragraph. If it it, it adds to it. If not, nothing happens. Its that simple.