PX: Viewport Dimensions Firefox

PX: Viewport Dimensions

Displays the viewport dimensions when a browser window is resized.
PX: Viewport DimensionsPX: Viewport Dimensions
Download Install

Features & Capabilities

PX: Viewport Dimensions is a handy Chrome extension that shows your browser's viewport size in real-time as you resize the window. Unlike other tools, it doesn't require Developer Tools to be open, making it simple and accessible for both developers and designers. It includes an easy-to-use panel that lets you enable or disable the plugin anytime, providing flexibility based on your needs. This tool is perfect for web development, responsive design testing, and ensuring layouts look great at any screen size.

User Growth & Download Statistics

Manifest V2 Add-on Developer Tools Programming
By:
Luke Peters
Daily users:
947 -19
Rating:
4.59
(22)
Version:
2.0 Last updated: 2025-11-06
Version code:
6069783
Creation date:
2019-03-10
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
Size:
20.63KB
Email:
lu*****@gmail.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-21
Compare stats and ranking:

Ranking

# 3,393 ▼ 33
Other rankings
#45 in resize keyword 33 #66 in sport keyword 10 ▲ 3#148 in tons keyword 32

For Developers

Monetize with App Pass Boost with Extension Booster

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:
Luke Peters
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/px-viewport-dimensions/
Email:
lu*****@gmail.com
Website:
https://github.com/LukePeters/px-viewport-dimensions

User Reviews

PX: Viewport Dimensions is praised by web developers for its simplicity and essential functionality in displaying viewport sizes for responsive design. Users appreciate its ease of use and customization options. However, recurring issues include the popup being obscured by high z-index elements, limited customization of popup size and location, occasional startup delays, and minor bugs like errors in the console or undesired popup appearances during fullscreen videos. Despite these, it remains a valuable and lightweight tool appreciated by its users.
Pros
  • Provides real-time display of viewport dimensions helpful for responsive web design.
  • Simple, easy to use, and integrates well into web developer workflows.
  • Small and lightweight, serving its purpose without unnecessary complexity.
  • Allows customization such as changing the popup location and hide delay time.
Cons
  • Popup may be hidden behind elements with high z-index, causing visibility issues.
  • Limited options for popup size and position; no pointer-event control to allow clicks through the overlay.
  • Occasional initial delay before the addon activates or functions as expected.
  • Can cause console errors or permission issues in some scenarios.
  • Popup may appear in undesired contexts, like fullscreen videos, and lacks full control over persistence timing.
Recent reviews
by 天灭*****, 2025-04-07
by Fi*****, 2025-03-18
by 退出*****, 2025-02-26
View all user reviews ›

Is PX: Viewport Dimensions 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.

PX: Viewport Dimensions 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.
  • 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.

PX: Viewport Dimensions is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
Extension Guard
Extension Guard

Discover every extension in use, analyze risks, and enforce blocking policies with Extension Guard

Secure Your Browser
Upgrade to see full risk analysis details

Best PX: Viewport Dimensions Alternatives

Here are some Firefox add-ons that are similar to PX: Viewport Dimensions:

Viewport
Kameron
213 2.96 (23)
Dimension
Anime no Sekai
6 0.00 (0)
Display Window Size
123B
28 3.00 (1)
Display Div Dimensions
Win55
8 0.00 (0)
Dimensions
Felix Niklas
1K 4.53 (17)
Window Size Helper
Azamat Ciobeer
26 0.00 (0)
sbondPixels
omewelc
1 0.00 (0)
showWindowSize
deni5n
7 0.00 (0)
Browser Windows Size
Mehrshad Farzaneh
12 1.00 (1)
Viewport DPR Info
Azamat Ciobeer
26 0.00 (0)
Edit Resize Dimensions
Game bài 3d
1 0.00 (0)