Show HN: My image removing bookmarklet

I use this whenever I'm at work and need to browse a page with questionable content:

javascript: (function(){for(var g=document.getElementsByTagName("img"), o=g.length, n=0; o>n; n++) {g[n].src="https://placehold.it/"+g[n].clientWidth+"x"+g[n].clientHeight;}}())