Customizable: user-defined menus, (new) buttons and gestures for user agents, bookmarklets, url services, shell commands, internal functionality links and text processing etc.
Convenient: Any book (pdf/djvu)/dictionary (mdict)/txt/command line/app/webapp (web extensions) can be search engine.
Tiny: less than 200k.
Fast: run fast, even with thousands of user provided css/scripts.
Efficient: less touches, one click to reach any number of search engines without repeated input.
TTS, text reflow, resource sniffer, translation, reader's mode, user-defined url redirection, webdav/http backup & restore, auto next page, sending/receiving msg/file(s), site config (UA, no JS, no image, no 3rd party script/resource,active script, global scripts), http(s)/socks proxy, enabling html5 apps for local files (pdf/djvu/epub viewer, mdict dictionary lookup etc.).
Bookmarklets (works for CSP sites and with option to auto apply to similar sites)
AD blocking (block whole root domain trees etc.)
Customization (define extra menus/buttons/gestures with user-defined functionalities)
Serverless local sites: PWA-kind web extension (chrome .crx & firefox .xpi) support.
Piping between console and uweb tabs.
Resizable floating video support.
Help with localization
We encourage everyone to help with localization. The following is how to do.