Frequently asked questions ========================== :title: Frequently asked questions The Compiler [qanda] What is qutebrowser based on?:: qutebrowser uses http://www.python.org/[Python], http://qt.io/[Qt] and http://www.riverbankcomputing.com/software/pyqt/intro[PyQt]. + The concept of it is largely inspired by http://portix.bitbucket.org/dwb/[dwb] and http://www.vimperator.org/vimperator[Vimperator]. Many actions and key bindings are similar to dwb. Why another browser?:: It might be hard to believe, but I didn't find any browser which I was happy with, so I started to write my own. Also, I needed a project to get into writing GUI applications with Python and link:http://qt.io/[Qt]/link:http://www.riverbankcomputing.com/software/pyqt/intro[PyQt]. + Read the next few questions to find out why I was unhappy with existing software. What's wrong with link:http://portix.bitbucket.org/dwb/[dwb]/link:http://sourceforge.net/projects/vimprobable/[vimprobable]/link:https://mason-larobina.github.io/luakit/[luakit]/link:http://pwmt.org/projects/jumanji/[jumanji]/... (projects based on WebKitGTK)?:: Most of them are based on the http://webkitgtk.org/[WebKitGTK+] http://webkitgtk.org/reference/webkitgtk/stable/index.html[WebKit1] API, which causes a lot of crashes. As the GTK API using WebKit1 is https://lists.webkit.org/pipermail/webkit-gtk/2014-March/001821.html[deprecated], these bugs are never going to be fixed. + The newer http://webkitgtk.org/reference/webkit2gtk/stable/index.html[WebKit2 API] seems to lack basic features like proxy support, and almost no projects seem to have started porting to WebKit2 (I only know of http://www.uzbl.org/[uzbl]). + qutebrowser uses http://qt.io/[Qt] and http://wiki.qt.io/QtWebKit[QtWebKit] instead, which suffers from far less such crashes. It might switch to http://wiki.qt.io/QtWebEngine[QtWebEngine] in the future, which is based on Google's https://en.wikipedia.org/wiki/Blink_(layout_engine)[Blink] rendering engine. What's wrong with https://www.mozilla.org/en-US/firefox/new/[Firefox] and link:http://5digits.org/pentadactyl/[Pentadactyl]/link:http://www.vimperator.org/vimperator[Vimperator]?:: Firefox likes to break compatibility with addons on each upgrade, gets slower and more bloated with every upgrade, and has some https://blog.mozilla.org/advancingcontent/2014/02/11/publisher-transformation-with-users-at-the-center/[horrible ideas] lately. + Also, developing addons for it is a nightmare. What's wrong with http://www.chromium.org/Home[Chromium] and https://vimium.github.io/[Vimium]?:: The Chrome plugin API doesn't seem to allow much freedom for plugin writers, which results in Vimium not really having all the features you'd expect from a proper minimal, vim-like browser. Why Python?:: I enjoy writing Python since 2011, which made it one of the possible choices. I wanted to use http://qt.io/[Qt] because of http://wiki.qt.io/QtWebKit[QtWebKit] so I didn't have http://wiki.qt.io/Category:LanguageBindings[many other choices]. I don't like C++ and can't write it very well, so that wasn't an alternative. But isn't Python too slow for a browser?:: http://www.infoworld.com/d/application-development/van-rossum-python-not-too-slow-188715[No.] I believe efficiency while coding is a lot more important than efficiency while running. Also, most of the heavy lifting of qutebrowser is done by Qt and WebKit in C++, with the https://wiki.python.org/moin/GlobalInterpreterLock[GIL] released. Is there an adblocker?:: There is a host-based adblocker which takes /etc/hosts-like lists. A "real" adblocker has a http://www.reddit.com/r/programming/comments/25j41u/adblock_pluss_effect_on_firefoxs_memory_usage/chhpomw[big impact] on browsing speed and https://blog.mozilla.org/nnethercote/2014/05/14/adblock-pluss-effect-on-firefoxs-memory-usage/[RAM usage], so implementing it properly might take some time and won't be done for v0.1 if at all. How do I play Youtube videos with mpv?:: You can easily add a key binding to play youtube videos inside a real video player - optionally even with hinting for links: + ---- :bind m spawn mpv {url} :bind M hint links spawn mpv {hint-url} ---- + Note that you might need an additional package (e.g. https://www.archlinux.org/packages/community/any/youtube-dl/[youtube-dl] on Archlinux) to play web videos with mpv. + There is a very useful script for mpv, which emulates "unique application" functionality. This way you can add links to the mpv playlist instead of playing them all at once. + You can find the script here: https://github.com/mpv-player/mpv/blob/master/TOOLS/umpv + It also works nicely with rapid hints: + ---- :bind m spawn umpv {url} :bind M hint links spawn umpv {hint-url} :bind ;M hint --rapid links spawn umpv {hint-url} ---- How do I use qutebrowser with mutt?:: Due to a Qt limitation, local files without `.html` extensions are "downloaded" instead of displayed, see https://github.com/qutebrowser/qutebrowser/issues/566[#566]. You can work around this by using this in your `mailcap`: + ---- text/html; mv %s %s.html && qutebrowser %s.html >/dev/null 2>/dev/null; needsterminal; ---- What is the difference between bookmarks and quickmarks?:: Bookmarks will always use the title of the website as their name, but with quickmarks you can set your own title. + For example, if you bookmark multiple food recipe websites and use `:open`, you have to type the title or address of the website. + When using quickmark, you can give them all names, like `foodrecipes1`, `foodrecipes2` and so on. When you type `:open foodrecipes`, you will see a list of all the food recipe sites, without having to remember the exact website title or address. == Troubleshooting Configuration not saved after modifying config.:: When editing your config file manually, qutebrowser must be exited completely. This can be done by issuing the command `:quit` or by pressing `Ctrl+q`. Unable to view flash content.:: If you have flash installed for on your system, it's necessary to enable plugins to use the flash plugin. Using the command `:set content allow-plugins true` in qutebrowser will enable plugins. Packages for flash should be provided for your platform or it can be obtained from http://get.adobe.com/flashplayer/[Adobe]. Experiencing freezing on sites like duckduckgo and youtube.:: This issue could be caused by stale plugin files installed by `mozplugger` if mozplugger was subsequently removed. Try exiting qutebrowser and removing `~/.mozilla/plugins/mozplugger*.so`. See https://github.com/qutebrowser/qutebrowser/issues/357[Issue #357] for more details. Experiencing segfaults (crashes) on Debian systems.:: For Debian it's highly recommended to install the `gstreamer0.10-plugins-base` package. This is a workaround for a bug in Qt, it has been fixed upstream in Qt 5.4 More details can be found https://bugs.webkit.org/show_bug.cgi?id=119951[here]. Segfaults on Facebook, Medium, Amazon, ...:: If you are on a Debian or Ubuntu based system, you might experience some crashes visiting these sites. This is caused by various bugs in Qt which have been fixed in Qt 5.4. However Debian and Ubuntu are slow to adopt or upgrade some packages. On Debian Jessie, it's recommended to use the experimental repos as described in https://github.com/qutebrowser/qutebrowser/blob/master/INSTALL.asciidoc#on-debian--ubuntu[INSTALL]. + Since Ubuntu Trusty (using Qt 5.2.1), https://bugreports.qt.io/browse/QTBUG-42417?jql=component%20%3D%20WebKit%20and%20resolution%20%3D%20Done%20and%20fixVersion%20in%20(5.3.0%2C%20%225.3.0%20Alpha%22%2C%20%225.3.0%20Beta1%22%2C%20%225.3.0%20RC1%22%2C%205.3.1%2C%205.3.2%2C%205.4.0%2C%20%225.4.0%20Alpha%22%2C%20%225.4.0%20Beta%22%2C%20%225.4.0%20RC%22)%20and%20priority%20in%20(%22P2%3A%20Important%22%2C%20%22P1%3A%20Critical%22%2C%20%22P0%3A%20Blocker%22)[over 70 important bugs] have been fixed in QtWebKit. For Debian Jessie (using Qt 5.3.2) it's still https://bugreports.qt.io/browse/QTBUG-42417?jql=component%20%3D%20WebKit%20and%20resolution%20%3D%20Done%20and%20fixVersion%20in%20(5.4.0%2C%20%225.4.0%20Alpha%22%2C%20%225.4.0%20Beta%22%2C%20%225.4.0%20RC%22)%20and%20priority%20in%20(%22P2%3A%20Important%22%2C%20%22P1%3A%20Critical%22%2C%20%22P0%3A%20Blocker%22)[nearly 20 important bugs]. My issue is not listed.:: If you experience any segfaults or crashes, you can report the issue in https://github.com/qutebrowser/qutebrowser/issues[the issue tracker] or using the `:report` command. If you are reporting a segfault, make sure you read the link:doc/stacktrace.asciidoc[guide] on how to report them with all needed information.