Pixefy - Responsive Design Checker Firefox

Pixefy - Responsive Design Checker

By: Pixefy
Preview and debug your website’s responsiveness across multiple devices in real-time, all inside one browser tab.

Features & Capabilities

Pixefy helps you spot layout issues instantly with live editing and multi-device previews in a single tab. Preview, debug, and fine-tune designs across breakpoints without juggling multiple windows.

Key capabilities include custom screens and presets, CSS debugging, content editing, accessibility checks, and an SEO overview—delivered through side-by-side previews, live inspections, and export-ready feedback.

User Growth & Download Statistics

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:
Pixefy
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/pixefy/
Email:
in*****@gmail.com
Website:
https://www.pixefy.io

Permission Change History

2026-01-11: Version 1.0.0 → 1.0.1
Remove Permissions: cookies
2026-01-08: Version 0.9.11 → 1.0.0
Add Permissions: browsingData cookies
Remove Optional permissions: browsingData downloads

User Reviews

Wonderful extension for web devs!
by Mi*****, 2025-12-05
View all user reviews ›

Is Pixefy - Responsive Design Checker 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.

Pixefy - Responsive Design Checker 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 ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
  • High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
  • Low ******* ****** ** *** ********* ******** ********** ***
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.

Pixefy - Responsive Design Checker is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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