Best alternatives to Viewport Resizer: Ultimate Device Emulator & Website Testing Tool (2026)
10 Chrome extensions that do a similar job to Viewport Resizer, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.
Viewport Resizer: Ultimate Device Emulator & Website Testing Tool today
Viewport Resizer alternatives, compared
- 1
Mobile View: Device Emulator & Responsive Tester
Mobile simulator and responsive design tester. Compare phone, tablet and desktop views, sync scrolling and capture screenshots.
≈3K users5.0★ from 22 ratingsUpdated 8 days ago10 permissions- About 27× fewer users than Viewport Resizer
- Rated 0.8 stars higher
- Updated more recently
- Asks for more permissions (10 vs 5)
- 2
Responsive Website Testing Toolkit - Multiple Viewport Simulator
An essential tool to test the responsiveness of any website on multiple screens simultaneously
≈6K users4.0★ from 23 ratingsUpdated 6 months ago6 permissions- About 13× fewer users than Viewport Resizer
- Updated more recently
- Asks for more permissions (6 vs 5)
- 3
Mobile View Extension - View website as mobile
Use Mobile View Extension for testing mobile websites with a responsive website checker, a responsive design test, and previews.
≈3K users4.7★ from 11 ratingsUpdated in the last day4 permissions- About 27× fewer users than Viewport Resizer
- Updated more recently
- Asks for fewer permissions (4 vs 5)
- Listed under Tools
- 4
Mobile View Tester: Responsive Web Design Tool
Mobile-first design validation. Quickly preview and optimize website performance across multiple device screen sizes.
≈1K users3.6★ from 7 ratingsUpdated 19 months ago8 permissions- About 80× fewer users than Viewport Resizer
- Updated less recently
- Asks for more permissions (8 vs 5)
- Listed under Tools
- 5
Mobile View: Test responsive designs fast
Test your responsive designs on multiple devices at once.
≈20K users4.2★ from 40 ratingsNot updated for 2+ years7 permissions- About 4.0× fewer users than Viewport Resizer
- Updated less recently
- Asks for more permissions (7 vs 5)
- 6
Over.fig – Compare design to website in real time
Bridge the gap between design and code. Convert your Figma into a pixel-perfect semi-transparent overlay directly on your web page.
≈1K users4.6★ from 9 ratingsUpdated 8 weeks ago3 permissions- About 80× fewer users than Viewport Resizer
- Updated more recently
- Asks for fewer permissions (3 vs 5)
- 7
Mobile Simulator
Use Mobile Simulator for web devs — mobile view extension, browser simulator and emulator for Chrome with responsive design testing.
≈3K users5.0★ from 10 ratingsUpdated 5 months ago8 permissions- About 27× fewer users than Viewport Resizer
- Updated more recently
- Asks for more permissions (8 vs 5)
- Listed under Tools
- 8
Designer Tools
A collection of tools to help you design and develop websites with precision.
≈80K users4.4★ from 233 ratingsUpdated 15 months ago5 permissions- A similar number of users to Viewport Resizer
- Rated 0.2 stars higher
- Updated less recently
- 9
Mobile Simulator MSIM Responsive Viewer
Professional mobile device simulator with multiple views, extensive device library, and sync scrolling
≈2K users5.0★ from 10 ratingsUpdated 5 days ago3 permissions- About 40× fewer users than Viewport Resizer
- Updated more recently
- Asks for fewer permissions (3 vs 5)
- 10
Responsive Viewer
Show multiple screens once, Responsive design tester
≈400K users4.2★ from 352 ratingsUpdated 3 months ago6 permissions- About 5.0× more users than Viewport Resizer
- Updated more recently
- Asks for more permissions (6 vs 5)
Viewport Resizer alternatives: questions
What is the best alternative to Viewport Resizer?
By users, the most popular alternative is Responsive Viewer with ≈400K users and a 4.2-star rating. The closest match by what it does is Mobile View: Device Emulator & Responsive Tester.
Which Viewport Resizer alternative has the best rating?
Designer Tools has the highest rating of these alternatives with 50+ ratings: 4.4 out of 5 from 233 ratings.
Is there a Viewport Resizer alternative that asks for fewer permissions?
Over.fig – Compare design to website in real time asks for 3 permissions, against 5 for Viewport Resizer.
How many alternatives to Viewport Resizer are there?
We list 10 close alternatives to Viewport Resizer on the Chrome Web Store, picked by what they do and ranked by how close they are.
Users and ratings are the figures shown on the Chrome Web Store, re-checked continuously. Alternatives are matched on name, description, category and topic. Browse best-of lists by niche.