Convert Images in Seconds — Right in Your Browser with This Free Chrome Extension
Have you ever needed to convert a bunch of images to a different format — say, from PNG to JPEG — and found yourself uploading files to some sketchy website or juggling heavy desktop tools? We’ve all been there.
That’s exactly why I created Image Converter, a lightweight, privacy-friendly Chrome extension that lets you batch convert images instantly inside your browser, with zero uploads.
🚀 What Is Image Converter?
Image Converter is a simple Chrome extension that lets you:
✅ Convert multiple images at once
✅ Choose from PNG, JPEG, WebP, or BMP formats
✅ Drag and drop or select files manually
✅ Automatically adapts to light and dark mode
✅ Works entirely offline — no internet or uploads required
✅ Fully open-source on GitHub
👉 Install it from GitHub:
https://github.com/yang-shuohao/image-converter
🖼️ Why Another Image Converter?
Most online image converters:
❌ Require uploading your private files
❌ Have annoying ads or paywalls
❌ Don’t support batch processing
❌ Can’t work offline
With Image Converter, you stay in control:
No file leaves your computer
No server processing
No tracking or analytics
It just works — fast and clean.
💡 Use Cases
🧑💻 Developers converting design assets
🖌️ Designers preparing previews in different formats
📸 Photographers exporting JPEGs for web
🧍♀️ Everyday users who need to shrink PNGs to JPGs
🔧 How It Works
Install the extension in developer mode:
Clone the GitHub repo
Go to
chrome://extensions/Enable Developer mode
Click Load unpacked and select the folder
Open the extension
Drag in or select image files
Pick a format (PNG, JPEG, WebP, BMP)
Click "Convert & Download ZIP"
🎉 Done! Your converted files are zipped and downloaded.
⚙️ Supported Formats
🟢 Input Formats:
PNG, JPG, JPEG, WebP, GIF (static), BMP, SVG, AVIF (modern browsers)
🟢 Output Formats:
PNG, JPEG, WebP, BMP
GIFs and SVGs are rendered as static images
ICO/TIFF not yet supported due to browser limitations
🕶️ Looks Great in Dark Mode Too
The UI adapts to your system theme — whether you’re rocking light or dark mode, the extension blends right in.
![Screenshot of plugin in dark mode - insert image if possible]
🧑💻 Open Source & Built with Privacy in Mind
This project is 100% open source. You can view, fork, and contribute via GitHub:
📦 https://github.com/yang-shuohao/image-converter
There’s no telemetry, no analytics, no hidden code. It’s just clean, client-side JavaScript using the Canvas API.
📈 Help Me Spread the Word!
If you find this extension useful:
⭐ Star the GitHub repo
💬 Share it with friends or colleagues
📝 Drop feedback, suggestions, or PRs — I’m always open to improvements!
🙌 Final Thoughts
In a world full of bloated apps and data-hungry tools, sometimes the simplest solution is the best.
Image Converter does one job — and it does it fast, cleanly, and securely.
Happy converting!
— yang-shuohao
🔗 Links
🧩 GitHub: github.com/yang-shuohao/image-converter
🧑💻 Author: @yangshuohao
