Image Tools
Image Resizer
Resize image dimensions by width/height pixels or custom percentages. Fully offline and secure inside your browser.
What is Image Resizer?
The Image Resizer is a free browser-based utility that allows you to change the dimensions (width and height) of your images in pixels or percentages. Resize JPG, PNG, and WebP images locally without uploading them to external servers, ensuring complete privacy.
How Does Image Resizer Work?
It uses the HTML5 Canvas API to load your image file and redraw it at new target dimensions. The browser then exports the scaled canvas as a downloadable file, ensuring high performance and data security.
How to Use Image Resizer — Step by Step
- Select and upload an image (JPG, PNG, or WebP) from your device.
- Specify target width and height in pixels or select a percentage scale.
- Choose whether to lock the aspect ratio to prevent image distortion.
- Click 'Resize Image' and download the resized file.
Key Benefits
- Aspect Ratio Lock: Ensures images do not look stretched or squished.
- Multi-Format Output: Convert to JPG, PNG, or WebP while rescaled.
- Safe Local Processing: Files never leave your local browser sandbox.
Who Uses Image Resizer?
- Web Uploads: Resize photos to fit website banners, blog posts, or store products.
- Profile Photos: Scale avatars to meet specific platform dimensions (e.g. 500x500).
Tips & Best Practices
- Keep the aspect ratio checked unless you explicitly want to distort the image width and height.
- Downscaling images improves website page load times significantly.
Common Mistakes to Avoid
- Upscaling very small images, which will cause pixelation and blurriness.
- Closing the tab before downloading the output file.
Image Resizer — Frequently Asked Questions
Reducing image dimensions uses advanced interpolation to keep the image sharp. Upscaling, however, may result in a softer or blurry look.
Yes, because the resizing calculations are performed entirely inside your local browser memory.