The Problem Every Web Developer Faces

If you build websites, you know the drill: manually dragging your browser window smaller, then bigger, then smaller again, trying to see how your design looks on a phone, tablet, and desktop. It’s tedious, imprecise, and wastes time you could spend actually coding or designing.​

Window Resizer solves this by letting you resize your browser to exact dimensions with one click, making responsive design testing instant and accurate.​

What Window Resizer Does

Window Resizer is a Chrome extension built specifically for web designers and developers who need to test their layouts across different screen resolutions. Instead of manually resizing your browser and guessing dimensions, the extension provides preset resolution options and custom size controls directly from your toolbar.​

Key features include:

• Resize browser windows to emulate phones, tablets, laptops, and desktop screens​
• Fully customizable resolution list where you can add, delete, or reorder presets​
• Set exact width, height, and window position values​
• Apply dimensions to the entire window or just the viewport area​
• Support for multiple window control to test different layouts simultaneously​

Why This Matters for Your Workflow

Testing responsive design manually is error-prone because you never know the exact pixel dimensions when you drag a window. Window Resizer gives you precision, letting you test at common breakpoints like 320px, 768px, 1024px, and 1920px instantly.​

This is especially valuable when you’re debugging CSS media queries or checking how your layout adapts to different viewport sizes, because you can switch between resolutions in seconds and immediately see the changes.​

How to Install Window Resizer

Getting the extension installed takes less than a minute through the official Chrome Web Store.​

Steps to install:

1. Visit the extension page: https://chromewebstore.google.com/detail/clpflmgfapbjmlbajbkgadjjlbgaidgb
2. Click Add to Chrome in the top-right corner
3. Confirm the installation by clicking Add extension in the popup
4. The Window Resizer icon will appear in your toolbar, ready to use

After installation, you can immediately start resizing your current browser window by clicking the icon and selecting from the preset options.​​

Using It for Real Development Work

Once installed, open any website you’re working on and click the Window Resizer icon in your toolbar. A popup appears with preset layouts showing different screen sizes, and clicking any option instantly resizes your browser to those exact dimensions.​

You can also customize your own presets by going to the settings and adding specific dimensions you test frequently, such as your site’s custom breakpoints. The extension remembers these settings, so your workflow becomes faster every time you use it.​​

For designers working on documentation or taking screenshots, Window Resizer ensures every capture has consistent dimensions, making your visuals look more professional.​

Privacy and Performance

Window Resizer is open-source software that does not collect any user information, ensuring your browsing and development work remains private. The extension only activates when you click it, meaning it doesn’t consume resources or slow down your browser when idle.​

Get Started Today

If you design or develop websites and you’re still manually resizing browser windows, install Window Resizer and experience how much faster testing becomes when you have pixel-perfect control. Try it on your current project and add your most-used screen sizes to the preset list for instant access.

Download link: https://chromewebstore.google.com/detail/clpflmgfapbjmlbajbkgadjjlbgaidgb

Test Like a Pro: How Window Resizer Makes Responsive Design Effortless was originally published in Coinmonks on Medium, where people are continuing the conversation by highlighting and responding to this story.