DEV-Tools
Adds a new sidebar to the developer tools inspector panel. The sidebar displays the page document as an inspectable object.
Manifest V2 Add-on
- By:
- Juniper
- Daily users:
- 26 5
- Rating:
- 4.50 (2)
- Version:
- 8.9.0 Last updated: 2022-08-16
- Version code:
- 5444833
- Creation date:
- 2022-08-15
- Risk:
- Moderate risk impact Low risk likelihood
- Permissions:
- <all_urls>
- <all_urls>
- Size:
- 8.34KB
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Data ingested on:
- 2025-07-16
User reviews
by 远离*****, 2025-04-11
by 敬念*****, 2025-03-18
by Se*****, 2024-12-05
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.
DEV-Tools requires a few sensitive permissions. 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.
- 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.
DEV-Tools 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 **** ********* *** **** **** *******
Upgrade to see full risk analysis details
Instantly check and monitor your browser extensions' risks and permissions with
Extension Guard.Compare add-ons
- Compare DEV-Tools vs New-Free-sidebar
- Compare DEV-Tools vs Inspector DOM Sidebar
- Compare DEV-Tools vs devtools Extension
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