Viewport Switcher for Chrome
Resizes the actual browser window to exact mobile, tablet, and desktop presets and restores your original window size in one click.
Replaces:
Window ResizerResponsive Viewer
Why Developers Switch to OmniDev
Installing a separate browser extension just for viewport switcher bloats Chrome memory, adds permission risk, and clutters your toolbar. OmniDev integrates Viewport Switcher natively alongside 53 other frontend and QA tools.
Resizes the actual browser window to exact mobile, tablet, and desktop presets and restores your original window size in one click.
Runs inside an isolated Shadow DOM panel so host page styles never break or leak
Zero background RAM overhead when idle — lazy-loaded on demand in milliseconds
Replaces standalone Window Resizer, Responsive Viewer extensions inside a single 54-in-1 toolkit
Shadow-DOM isolated • Zero host-page CSS leakage
STEP 01
Install OmniDev from the Chrome Web Store and open the popup or press your custom shortcut.
STEP 02
Select "Viewport Switcher" under the Utilities category (or search "Viewport Switcher" in the launcher).
STEP 03
Inspect, capture, or export results directly on the live page — 100% locally in your browser.
Frequently Asked Questions — Viewport Switcher
Is the Viewport Switcher tool in OmniDev completely free?
Yes. Viewport Switcher and all 54 tools in OmniDev are 100% free to use with no account signup or paywall.
Does Viewport Switcher send my webpage data to an external server?
No. Viewport Switcher runs locally inside your browser tab. OmniDev is architected local-first and never uploads your DOM, storage, or network payloads to a Jambo backend.
Which standalone Chrome extensions does Viewport Switcher replace?
Viewport Switcher replaces single-purpose extensions such as Window Resizer, Responsive Viewer, saving browser RAM and reducing extension permission sprawl.
More Utilities Tools in OmniDev
Every tool below is included in the same single Chrome extension install.
Explore All 54 Tools
Text Edit Mode
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Asset Explorer (Asset Spy)
Discovers, previews, filters, and bulk-downloads all images, inline SVGs, icons, and CSS background assets on the page.
Tailwind Converter
Click any element on any website to convert its computed CSS styles into clean Tailwind CSS utility classes.
Data Scraper
Point-and-click visual DOM scraper to extract repeating lists, tables, and structured data into CSV or JSON.
Dark Mode Toggle
Force toggle dark, light, dim, or sepia color schemes and `prefers-color-scheme` themes on any website.
Cookie Manager
View, search, add, edit, export, or delete cookies for the current domain without digging through DevTools Application tabs.
Get Viewport Switcher + 53 More Tools in 1 Click
Stop cluttering Chrome with dozens of single-purpose extensions. Install OmniDev free and run everything locally.
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