We have created browser plugins for Chrome, Firefox. These plugins allow you to highlight text on any website, right-click and search Q posts for that text. These will work on Desktops, and Android based mobile devices. Unfortunately, Apple iOS devices do not support these types of plugins. If you use and like the extension please rate it.
Please find them below:
Chrome - https://chrome.google.com/webstore/detail/q-posts-search/jebimmiepjmcbkcapifibicmaecbapji
Firefox - https://addons.mozilla.org/en-US/firefox/addon/q-posts-search/
Opera (coming soon)