DevTools Prototyper

Name: DevTools Prototyper
Rating: 3.5 (2 reviews)
Author: Tim Nguyen

This add-on adds JS Fiddle style code prototyping to Firefox DevTools.

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Keyboard shortcuts Windows and Linux : You can use Ctrl+S or Ctrl+Enter to run. Mac : You can use Cmd+S or Cmd+Enter to run.

Contribute You can contribute on Github : https://github.com/nt1m/devtools-prototyper

Add-on

By:

Daily users:

Rating:

Version:

5.0a1 Last updated: 2020-12-05

Version code:

5144816

Creation date:

2014-10-25

Risk:

Permissions:

<all_urls>
tabs
storage
unlimitedStorage

Size:

450.74KB

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-17

Ranking

# 21,298 ▼ 451

Other rankings

#197 in tools keyword 68 ▼ 6

Extension safety

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.

DevTools Prototyper 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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Medium ****** ** ********* ****** ********* *** **** ****** **** **** ** ******* ** ********** **** ***********

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 Browser Add-ons, 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.

DevTools Prototyper 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.
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Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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