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What our analysis found

Jank Simulator is not yet reviewed by Extension Auditor. Its permissions mean it can read and change data on all websites and can inject scripts into pages. It was last updated in October 2025.

Jank Simulator

Jank Simulator Edge extension security report

ID: blocgifiimclbjonpkjbcaakjfkiokcc

Supported Languages

🇺🇸US English

Extension Info & Metadata

Status
Active
Version
1.1
Size
0.02 MB
Rating
5.0/5
Reviews
1
Users
26
Type
Extension
Updated
Oct 3, 2025
Category
Developer-tools
Price
Paid
Featured
No
Visibility
Listed
Mature
No
By Google
No
Trusted
No
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1extension
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Publisher Contextual Analysis

Author
Andy Luhrs
Privacy
Privacy Policy
Website
Visit
Extensions
1
Active
1
Obsolete
0
Listed
1
Unlisted
0
Users
26

Install growth

Item
Type
Severity
Description
scripting
Permission
Critical
This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.
<all_urls>
Risk Factor
Critical
This permission grants access to all websites without restriction. Rated High because it can access any web content, monitor all web activity, and potentially steal sensitive data across all sites.
Broad Host Permissions
Risk Factor
High
This extension has broad host permissions allowing it to access many or all websites.
Broad Content Script Access
Risk Factor
High
This extension can inject scripts into any website.
activeTab
Permission
Medium
This permission grants temporary access to the current tab. Rated Medium because it can access current page content when invoked, though limited to user-initiated actions.
storage
Permission
Medium
This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.

About this extension

Simulates UI jank by running long tasks on the main thread

Read the publisher’s full description

This extension simulates the sluggish behavior of low-end devices by injecting JavaScript that runs intensive tasks directly on the main thread. It helps developers observe and diagnose UI responsiveness issues under heavy load conditions. Note: Simulated long tasks automatically stop when the page is refreshed.

User reviews

Extension files

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No network indicators were extracted from this version.

Version
Size
Verdict
Findings
Permhash
1.0
Latest
0.02 MBNot scanned—
2b1e78ea935f5a876ba08e38c3dd3238db38dc1a6119179a34a733747daf953f
1.1
0.02 MBNot scanned—
2b1e78ea935f5a876ba08e38c3dd3238db38dc1a6119179a34a733747daf953f
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Code Diff

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0 changed files detected

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