Introduction

As web developers, our browser is our primary workspace, and the right extensions can transform how we code, test, and browse. These four Chrome extensions solve real problems that developers face daily — from testing responsive layouts to saving video timestamps for learning, blocking distracting ads, and improving grammar in documentation.​

Each of these tools is free, easy to install, and designed to make your workflow smoother without slowing down your browser.

1. Window Resizer — Test Responsive Design Instantly

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

Window Resizer eliminates the guesswork from responsive design testing by letting you resize your browser to exact dimensions with one click. Instead of manually dragging windows and estimating viewport sizes, this extension provides preset resolutions for phones, tablets, and desktops, plus the ability to create custom presets for your specific breakpoints.​

Why developers love it:

• Test at precise pixel dimensions (320px, 768px, 1024px, 1920px) instantly​
• Customize and save your most-used screen sizes for faster testing​
• Apply sizing to the entire window or just the viewport area​
• Debug CSS media queries with accurate viewport measurements​

This is essential for anyone building responsive websites who needs to verify how layouts adapt across different devices without manually resizing or using browser DevTools constantly.

2. AdBlock Plus — Focus Without Distractions

Download: https://chromewebstore.google.com/detail/ijhioehnbkllpelkfgjhdppoanhmphfc

AdBlock Plus is the most popular ad blocker with over 500 million downloads, helping developers maintain focus by blocking pop-ups, video ads, banners, and intrusive tracking. When you’re researching documentation, reading Stack Overflow, or watching YouTube tutorials, ads break your concentration and waste time.​

Key features:

• Blocks annoying ads including YouTube pre-rolls and mid-video interruptions​
• Reduces third-party tracking to keep your browsing more private​
• Protects against malicious ads containing viruses or phishing attempts​
• Customizable settings to whitelist specific sites you want to support​
• Works immediately after installation with optional “Acceptable Ads” feature​

The extension is fully compatible with Chrome’s latest security standards and never collects user information, prioritizing your privacy.​

3. YouTube Timestamp Saver — Never Lose Learning Moments

Download: https://chromewebstore.google.com/detail/ogchdkjjhoelgehjnpgdlfchbkdcfloo

For developers learning through YouTube tutorials, YouTube Timestamp Saver solves the frustrating problem of losing track of important moments in long videos. Instead of scrubbing through hours of content trying to find that one crucial explanation, you can bookmark exact timestamps with custom labels and search across all your saved moments.​

What makes it valuable:

• Bookmark key moments in any YouTube video with one click​
• Add custom names to each timestamp so you know exactly what it contains​
• Search through all your bookmarks across multiple videos instantly​
• Syncs with your Google account for access across devices​
• Keyboard shortcut (Ctrl+Shift+Q or ⌘+⇧+E) to quickly save timestamps​

This is particularly useful when following coding tutorials, conference talks, or technical explanations where you need to reference specific sections later while implementing the concepts in your own projects.​

4. Gramo — Polish Your Writing

Download: https://chromewebstore.google.com/detail/jabokopjemhpbppppnjccpbgnekkgnge

While specific details about Gramo weren’t available in search results, grammar and writing enhancement extensions are essential for developers who write documentation, README files, commit messages, code comments, and technical blog posts. These tools help ensure your written communication is clear, professional, and free of errors that could confuse collaborators or users.

Typical features in grammar extensions:

• Real-time spelling and grammar checking across all web text fields
• Style suggestions to make technical writing clearer
• Vocabulary enhancement for more precise language
• Works in GitHub, GitLab, Google Docs, email, and content management systems

Installation Made Easy

All four extensions install through the Chrome Web Store in seconds. For each extension:​

1. Click the download link provided above
2. Select Add to Chrome on the extension page
3. Review the permissions and click Add extension to confirm​
4. Pin the icon to your toolbar for quick access

Chrome displays exactly what permissions each extension needs before installation, ensuring you stay in control of what extensions can access.

4 Chrome Extensions Every Developer Needs in 2025 was originally published in Coinmonks on Medium, where people are continuing the conversation by highlighting and responding to this story.

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.