EXTPIXEL is a fully client-side image resizer built for browser extension developers who need exact asset dimensions for store submissions, but it also works great for general image scaling and quick edits.
With EXTPIXEL you can resize, crop, and batch export images directly in the browser. Everything runs locally on your device, so your images are never uploaded to a server. This makes the tool fast, simple, and privacy friendly.
I originally built it to solve the annoying process of preparing assets for browser extension stores (like screenshots and promotional images), where specific dimensions are required. Instead of juggling multiple tools or uploading images to online services, EXTPIXEL lets you handle everything instantly in one place.
EXTPIXEL provides multiple resize modes depending on how you want the image to behave:
• Stretch – scales the image to exactly match the target dimensions
• Auto Crop – automatically crops the image to preserve aspect ratio
• Manual Crop -lets you choose the crop area yourself
•Fit – keeps the entire image visible and fills remaining space
When using Fit mode, you can choose how the empty space is handled:
• White background
• Black background
• Blurred background
Features include:
• Fully client side processing
• Precise image resizing
• Cropping support
• Batch export for multiple assets
• No uploads or server processing
• Works directly in the browser
If you want to see it in action, here’s a quick demo video: youtube
You can try it here: EXTPIXEL
If you find it useful, feel free to star the project on GitHub.
Feedback and suggestions are always welcome
Top comments (1)
For a matter of fact, I even used EXTPIXEL to generate the cover image for this post!