When do browsers send the Origin header? When do browsers set the origin to null?...

Can Perl's CGI.pm process Firefox's <input type="file", multiple=""&g...

Available Keyboard Shortcuts for Web Applications...

navigator.clipboard.readText() is not working in Firefox...

Having trouble nonuniformly scaling feImage from data uri in svg...

TCP server in WebExtension...

Hide scroll bar, but while still being able to scroll...

Why are images zoomed in browsers, and how to circumvent this issue?...

How can one avoid the 5-second "lack of user activation" timeout for the file picker in Fi...

Smallstep X509 Certificates cause SEC_ERROR_BAD_DER in Firefox...

Why is Firefox not trusting my self-signed certificate?...

How to set Selenium Python WebDriver default timeout?...

What is the correct browser behaviour when you have CSS shorthands in combination with individual sh...

Having a html element flash a background color and fade to another...

HTML5 audio not working on Firefox...

Prevent line/paragraph breaks in contentEditable...

Why do flex-row and justify-items-center classes have no effect on Firefox but work on Chrome?...

Can I determine from JavaScript or from the user-agent string if browser is "Developer" ve...

How to tell if navigator.permissions.query with a certain permission is supported...

Firefox "Couldn't Load XPCOM" error won't go away, even after uninstalling Firefox...

How to change "File Upload" dialog's Title in a browser?...

Slower canvas in Firefox...

Firefox not honoring hosts file...

Base64 JPEG image disappearing on page refresh...

Ho do I filter by multiple methods in network tab of Firefox?...

addthis's script fails to load in Chrome...

Firefox WebExtention API: TypeError: browser.browserAction is undefined...

variable not defined in developer tools console...

How to get the current tab's history in a Web Extension in Firefox?...

CSS - Fonts Render Differently in Firefox and Chrome...