FormVisualizer

Name: FormVisualizer
Author: tterac

A small Firefox extension for web app security testers. It allows visualizing and manipulating form elements and clearing cookies, local storage and cache with a single action.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-08-15

Version:

1.3.2

Last updated: 2021-06-07

Features & Capabilities

FormVisualizer is a Firefox add-on designed for web application security testers. It provides features such as form visualization, manipulation, clearing of cookies and local storage, showing DOM HTML source, and tracking HTTP response status code and URLs.

User Growth & Download Statistics

Add-on

By:

tterac

Daily users:

Version:

1.3.2 Last updated: 2021-06-07

Version code:

5246933

Creation date:

2019-03-03

Risk:

Permissions:

<all_urls>
menus
browsingData
webRequest

Content scripts matches:

Size:

24.63KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-08-15

Compare stats and ranking:

Ranking

# 65,499 ▼ 136

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

tterac

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/formvisualizer/

Website:

https://github.com/t-tera/FormVisualizer

Is FormVisualizer Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

FormVisualizer requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

FormVisualizer is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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