Add /mobile to the end of a Tumblr URL if a blog theme makes posts difficult to read from your desktop browser. You’ll get Tumblr’s bare-bones mobile view: readable, black text on a clean, white background. No notes or tags will show. If the mobile-view text is too wide, simply narrow your browser window.
This tip works on a Tumblr blog index page, an individual blog’s tag page or a single post. Photo posts with single images will display with a 250-pixel width. But photosets, audio and video will not appear.