IT-info

Webbläsare

Firefox

How to reverse / block "allow to paste" in Developer Web Console

In the address bar, type about:config and press Enter/Return.
Proceed to the config / settings options.
In the Search field, type devtools.selfxss.count, then doubleclick this preference (or right-click and choose "Reset")
to set it to the default value of 0 (null).
Restart Firefox. devtools.selfxss.count needs to be 0 when Firefox boots up to get the warning.

Firefox

Redigera inställningar i Firefox (capability.policy-inställningar)

Configurable Security Policies
User.js file
Profile folder

Google Chrome

Chrome DevTools

Chrome DevTools
Chrome DevTools Overview
Chrome 66 - What's New in DevTools

Internet Explorer

Info on document modes

Request.Browser always registers as IE7 even when running IE8 or IE9
X-UA-Compatible is set to IE=edge, but it still doesn't stop Compatibility Mode
How Internet Explorer Chooses Between Document Modes
What does <meta http-equiv="X-UA-Compatible" content="IE=edge"> do?
Deprecated document modes and Internet Explorer 11
Forcing Internet Explorer 9 to use standards document mode
Internet Explorer for Developers - Compatibility
Internet Explorer for Developers - About conditional comments

Google Chrome

How to view a website's security certificate

How Do You View SSL Certificate Details in Google Chrome?

How to view cookies in some browsers

A wikiHow guide on how to view cookies in Google Chrome, Firefox, Microsoft Edge, Internet Explorer, and Safari. The guide also contains some info about how to delete cookies.

Källa:
5 Ways to View Cookies

Google Chrome Canary

chrome://flags

OBS! Eftersom Google Chrome Canary är en testversion av Google Chrome fungerar den kanske inte felfritt och kan även vara instabil. Dessutom är chrome://flags-funktionerna experimentella och kan ställa till det rejält i Google Chrome Canary.

16 Hidden Chrome Settings Worth Tweaking

Google Chrome Canary

Förbättra videokvalitén vid sändning av en webbläsarflik till din Chromecast

OBS! Eftersom Google Chrome Canary är en testversion av Google Chrome fungerar den kanske inte felfritt och kan även vara instabil. Dessutom är chrome://flags-funktionerna experimentella och kan ställa till det rejält i Google Chrome Canary. Testa följande tips på egen risk.

Ladda ner webbläsaren Google Chrome Canary och installera den.

Skriv chrome://flags/#media-remoting i adressfältet och tryck Enter / Retur.

Once in the Chrome flags menu, simply toggle "Media Remoting during Cast Tab Mirroring" from "Default" to "Enabled". While that’s technically all you need to do to turn it on, let’s cover our bases: go ahead and toggle secondary entry "Encrypted content too" on. Then click "Relaunch Now" to restart Chrome.

Källa:
https://www.howtogeek.com/304671/how-to-improve-chromecast-video-tab-casting-with-a-simple-tweeak/

Google Chrome

Öppna innehållet i en flik i ännu en flik (duplicera flik)

Klicka på fliken vars innehåll du vill öppna i ännu en flik.
Tryck Alt + D och sedan Alt + Enter.

Microsoft Edge (legacy)

Återställ Microsoft Edge i Windows 10

First, navigate to the following folder and clear everything inside it:

C:\Users\%username\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe

(Replace %username with your own username.)

Next, right-click on the Start menu and choose “Windows PowerShell (Admin)”.
Copy and paste the following code inside PowerShell and press Enter:

Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml” -Verbose}

Källa:
How to Reset Microsoft Edge in Windows 10