Viewport Resizer: Ultimate Device Emulator & Website Testing Tool

Name: Viewport Resizer: Ultimate Device Emulator & Website Testing Tool
Rating: 4.207885304659499 (279 reviews)
Author: Malte Wassermann

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

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Viewport Resizer is the ultimate device emulator and website testing Chrome extension designed to enhance your web design process. Effortlessly resize screens and emulate various devices, from wearables to ultra-wide monitors, allowing you to preview your digital experience across multiple platforms. Customize your workspace with your own or pre-made device mockups, explore various display resolutions, and leverage advanced features like touch fingerprint simulation, user-agent emulation, and breakpoint guides.

Built as a professional-grade tool for developers and designers, Viewport Resizer offers an intuitive zoomable workspace, precise rulers and grids, and a sleek presentation mode called 'Coffee Mode'. While it provides a comprehensive first-level approximation of your web design's look and feel on multiple devices, it is recommended to complement this with physical device testing to ensure accuracy.

Extension Developer Tools Design Productivity

By:

Users:

Rating:

Version:

2.0.3 Last updated: 2024-11-19

Creation date:

2019-12-28

Risk:

Permissions:

activeTab
scripting
declarativeNetRequest
storage

Host permissions:

<all_urls>

Size:

143.00KB

Email:

*****@maltewassermann.com

Full description:

Source:

Chrome Web Store

Updated:

a day ago

Ranking

# 2,262 ▲ 62

Other rankings

#612 in Developer Tools ▼ 2 #28 in device keyword 17 ▼ 13 #126 in testing keyword 40 ▼ 60 #171 in mobile keyword 37 ▼ 5

User reviews

Viewport Resizer is praised for its ease of use, functionality, and lightweight design, serving as a useful tool for responsive web design testing. However, multiple users report significant limitations when testing on localhost environments without HTTPS, leading to functionality loss. Other recurring issues include inability to save custom device settings, problems with page refresh resetting the tool, lack of automatic page refresh during navigation, and outdated resolution options. Despite these drawbacks, it remains a valuable extension for many developers seeking an efficient viewport emulator.

Pros

Easy to operate and configure devices.
Works well as a developer tool for responsive testing.
Lightweight with many useful options.
Doesn't require extra privileges and can resize beyond current screen resolution.
Useful for testing mobile views without needing physical devices.

Cons

Does not work well or at all on localhost environments without HTTPS.
Page refresh causes loss of extension settings and requires re-selection.
Lacks ability to save custom resolutions persistently.
Doesn't refresh the page automatically as navigation occurs within the viewport.
Outdated device resolution profiles (missing newer mobile devices).

Recent reviews

A extensão faz o que promete. Muito fácil de operar. Você pode configurar facilmente os dispositivos de seu interesse. Recomendo!

Ad*****, 2025-05-27

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?

Su*****, 2025-01-03

I prefer the old version, rather than the current version.

Zu*****, 2024-10-18

View all user reviews ›

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.

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.

Risk likelihood

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. 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 Chrome extension.

Viewport Resizer: Ultimate Device Emulator & Website Testing Tool has earned a good reputation and can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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