Web Developer Form Filler

Name: Web Developer Form Filler
Rating: 4.625 (24 reviews)
Author: Eric Busch

This extension is used by developers to make it easy to save and fill forms for use in submission testing and validation.

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Features & Capabilities

The Web Developer Form Filler extension is a powerful tool designed for developers to simplify the process of saving and refilling web forms, primarily used during submission testing and validation. With just one click, you can save any form and quickly refill it whenever needed, boosting efficiency and reducing repetitive manual input.

Key features include filtering saved form fills by URL, domain, or globally, customizable hotkeys for instant form fills, support for exporting and importing saved form sets to transfer between browsers, and syncing capabilities across devices. Released as free and open-source software under the MIT license, it encourages community contributions and continuous improvement. This extension enhances productivity and streamlines workflow for web developers handling form-related tasks.

User Growth & Download Statistics

Add-on Developer Tools Open Source

By:

Daily users:

Rating:

Version:

1.3.0 Last updated: 2023-06-10

Version code:

5579032

Creation date:

2019-02-22

Risk:

Permissions:

tabs
http://*/
https://*/
storage

Content scripts matches:

Size:

441.70KB

Email:

*****@etbus.ch

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-03

Compare stats and ranking:

Ranking

# 2,788 ▼ 38

Other rankings

#311 in Web Development

#5 in developer keyword 68

#6 in form keyword 22

#7 in developer tools keyword 60

#17 in development keyword 13 ▼ 1

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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:

Eric Busch

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/web-dev-form-filler/

Email:

*****@etbus.ch

Website:

https://github.com/etbusch/web-developer-form-filler-ext

User Reviews

Users find the Web Developer Form Filler add-on very useful for saving time and automatically filling complex forms, even for non-developers. While it offers a comprehensive feature set, common issues include loss of saved data upon closing Firefox, shortcut hotkey malfunctions, and difficulty managing many saved entries due to missing filtering options. Some users also lack export/import or synchronization features and report occasional errors depending on specific form conditions.

Pros

Saves a lot of time when testing websites by automatically filling forms.
Very useful and effective for filling complex forms automatically.
Works well even for non-developers requiring simple form filling.
Allows user-defined data to auto-fill form fields, aiding testing.
Provides a full set of features expected from a form filler add-on.

Cons

All saved form filler data get deleted when closing Firefox, requiring re-entry.
Shortcut hotkeys may not work properly or inconsistently.
Lack of features to filter or sort saved form entries when many are stored.
No export/import or sync of saved data with Firefox account.
In some situations, the add-on does not work correctly depending on type or number of fields filled.

Recent reviews

by -:*****, 2026-04-25

by gl*****, 2025-05-29

Looks like it's working :-)

by Mi*****, 2025-04-04

View all user reviews ›

Is Web Developer Form Filler 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.

Web Developer Form Filler requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

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.

Web Developer Form Filler has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

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