Web Pen Testing
This collection contains add-on tools that can assist web developers in testing web applications for defects which compromise quality (Security, Performance, Functionality).
- 15
- Add-ons
- JD
- Creator
- Feb 18, 2021
- Last updated
Shodan.io (DEPRECATED)
There is an official add-on for Shodan now - please switch to that one: https://addons.mozilla.org/en-US/firefox/addon/shodan-addon/
Rated 4.4 out of 5Shodan
2,238 users
Show Server IP
Show the Server IP without interacting with external Sites. If you are behind a proxy it will only show the IP of the Proxy!
Rated 3.2 out of 5BongoKarl101010
471 users
Adblock Plus
One of the most popular free ad blockers for Firefox. Block annoying ads on sites like Facebook, YouTube and all other websites. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
Rated 4.4 out of 5Adblock Plus
3,151,920 users
71,547 users
Google Reverse Image Search
Google Reverse Image Search is a simple tool that lets you search the images reversely on Google Images and find the other copies of the very image you are looking for on the web.
Rated 3.1 out of 5Baris Derin
3,322 users
7,966 users
HTTP Version Indicator
An indicator showing the HTTP version used to load the page in the address bar.
Rated 4.7 out of 5Brandon Siegel
3,029 users
FoxyProxy Basic
FoxyProxy is an open-source, advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. No paid accounts are necessary; bring your own proxies or buy from any vendor. The original proxy tool, since 2006.
Rated 4.3 out of 5Eric Jung
5,818 users
Best Proxy Switcher
Best Proxy Switcher was developed by the team, who provides proxy service since 2004 year. You can use Best Proxy Switcher with your own proxy or let it download most recently checked list from our web site automatically!
Rated 4.2 out of 5Proxy-List.org
1,715 users
Flash Debugger
Debug Flash/SWF/Flex files on the web. Edit properties and inspect elements on the fly. View log output inside the extension. Run AS3 code against the active SWF. Profile memory consumption and much much more...
Rated 4.1 out of 5O-Minds
888 users
User-Agent Switcher
Quickly and easily switch between popular user-agent strings.
Rated 3.9 out of 5Linder
17,304 users
Html Validator
HTML Validator is a Mozilla extension that adds HTML validation inside Firefox, Mozilla. The number of errors of a HTML page is seen on the form of an icon For Firefox 56, use 0.974 (see all versions below). For Firefox 57, see Web Extensions.
Rated 4.2 out of 5Marc Gueury
7,093 users
Awesome Screenshot & Screen Recorder
Full page screen capture and screen recorder 2 in 1. Share screencast video instantly.
Rated 4.4 out of 5Diigo Inc.
98,917 users
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
Rated 4.2 out of 5Anthony Lieuallen
166,517 users
Web Developer
The Web Developer extension adds various web developer tools to the browser.
Rated 4.3 out of 5chrispederick
75,208 users