Tim Ferriss's Speed Reading Method, in a Chrome Extension
chrome.google.com
chrome.google.com
I use something similar to Squirt [0], unfortunately I forgot the name as I failed to properly name the bookmarklet. Unfortunately Squirt is a little buggy and doesn't strip out connecting/useless words (just, basically, a, etc.) but it gives a good idea of what I'm talking about.
I typically have it set to 850wpm~ which is good enough for comprehension so long as the material is within my vocabulary. If it doesn't parse well (punctuation like parenthesis often breaks the parsing) or the vocab isn't in my reach - I drop it down to 450-550wpm.
[0] https://www.squirt.io/install.html
Edit:
Spritz is another speed-reading bookmarklet that I recommend over Squirt, as the parsing is better:
http://fourhourworkweek.com/2009/07/30/speed-reading-and-acc...
Thomas Frank breaks down the math in a video. Basically our eyes take so long to move and refocus, then read. The lines added by the chrome extension give you a target for your eyes to help practice using your periferal vision, requiring fewer eye movements to read a line.