Check XSS

Plugin helps in finding site vulnerabilities such as XSS, SQL injection and CRLF. Check XSS makes it possible for you to text XSS (CRLF and SQL commands) with context menu with just 2 mouse clicks.

Check XSS is available to install from Firefox Browser Add-ons and for download from this page. It has 467 daily users. The latest version is 1.1, and it was last updated 5 years ago.

View source code

Install from Firefox Browser Add-ons

Total download count: 0 (Only count downloads from Firefox-Stats)

All available versions

You can find the current and older versions of Check XSS here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

Upgrade to download older versions

Version	Download	Size	Download count	Timestamp
1.1	XPI · ZIP · Source code	12.24K	0	2019-10-03

Install XPI file

An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.

Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

Download the Check XSS ZIP file
In Firefox browser, go to about:addons to open Add-ons Manager
Click on , then select Install Add-on From File
Select the Check XSS ZIP file from step 1. Check XSS is now installed on your browser.