Firefox refresh current tab from command-line

You can use xdotool for automation. Install on Ubuntu with sudo aptitude install xdotool Then you can search for windows and send keys or mouse events, see man xdotool for the full documentation. I use following script on Ubuntu 16.04 LTS during development: WID=`xdotool search –name “Mozilla Firefox” | head -1` xdotool windowactivate $WID xdotool … Read more

How to extract number of currently opened tabs?

Open the about:telemetry link in Firefox and click scalars tab from the sidebar menu. Alternatively, opening about:telemetry#scalars-tab_search=tab will take you directly to the scalars tab. The browser.engagement.max_concurrent_tab_count key will show the number of tabs active for the session, but does not update when a tab is closed. Instead, if you want to update this value … Read more

How do I disable Firefox’s “Search for text when I start typing” on pages with keyboard shortcuts?

To disable this in firefox, just go to “Options->General Tab->Browsing and disable “Search for text when I start typing”. More info here . This is very useful in some cases, for example when you try to play WebGL games or when using pages like Gmail or Protonmail that have their own kb shortcuts. UPDATED to … Read more

How to use frame-src and child-src in Firefox and other browsers?

Update: Jan 2017: Stop using child-src and begin using frame-src again. In an effort to create even more confusion, CSP Level 3 has undeprecated frame-src and actually re-appointed it as the preferred way to achieve this. While child-src is still supported frame-src is once again preferred. Old post frame-src is deprecated, but it was only … Read more

Exact difference between add-ons, plugins and extensions

General rule of thumb: Plugins When you’re talking about a web browser, a plugin talks about a NPAPI or similar plugin, which is specific to the page. IE doesn’t support “plugins” per se, but they have activex controls which can fill a similar function, though there are also BHO (Browser Helper Object) ActiveX controls which … Read more

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