Viewport Resizer: Ultimate Device Emulator & Website Testing Tool

Emulate devices, resize screens, and perfect your web design effortlessly with this cutting-edge testing and presentation tool.

Viewport Resizer: Emulate Devices & Test Websites

Viewport Resizer: Ultimate Device Emulator & Website Testing Tool is a dynamic testing and presentation tool designed to create, test, and showcase digital experiences on any device. Customize your workspace, use device mockups, explore display resolutions, and harness advanced emulation features within a professional-grade environment for high-quality development and debugging.
Install from Chrome Web Store

Extension stats

Manifest V3
Users: 80,000+
Rating: 4.20
(279)
Version: 2.0.3 (Last updated: 2024-11-19)
Creation date: 2019-12-28
Permissions:
  • activeTab
  • scripting
  • declarativeNetRequest
  • storage
Host permissions:
  • <all_urls>
Size: 146.43K
Full description: See detailed description

Other platforms

Not available on Android
Not available on Firefox
Not available on Edge

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Works well for localhost environments
  • Lightweight and easy to use
  • Offers a variety of options and configurations
  • Does not require subscriptions or special permissions
  • Useful for responsive development testing
Cons
  • Does not work with HTTP versions for testing
  • Struggles with refreshing pages correctly during navigation
  • Limited device resolution options compared to current market devices
  • Issues with local file testing
  • Cross-domain security errors on protected sites
Most mentioned
  • Preference for the older version of the extension
  • Need for the extension to work with localhost
  • Frustrations with not retaining viewport settings after page refresh
  • Desire for updated device resolutions
  • Overall ease of use and functionality for developers
User reviews
The older version of this extension worked perfectly for all URLs. However, in the new version, I am unable to test the test domains, and it also does not work with HTTP versions. Could you please verify this?
by Suresh, 2025-01-03

I prefer the old version, rather than the current version.
by Zul Fikar, 2024-10-18

Hi, can you add the time ones to the navigation bar?
by Eric May, 2024-09-30
View all user reviews

Extension safety

Risk impact

Viewport Resizer: Ultimate Device Emulator & Website Testing Tool 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.
  • Low ******* ****** ** *** ********* ********
Risk likelihood

We don't have sufficient data to confidently determine the risk likelihood of Viewport Resizer: Ultimate Device Emulator & Website Testing Tool. Use it at your own risk.

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

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