Image Resizer
Resize images by pixels or percentage. Maintain aspect ratio or set custom dimensions. 100% private — processed in your browser.
Click to upload or drag & drop an image
PNG, JPG, GIF, WebP, BMP supported
About Image Resizer
Resize any image directly in your browser without uploading it to a server. Supports JPEG, PNG, WebP, GIF, and BMP formats. Lock aspect ratio to avoid distortion, or set custom width and height. Download the resized image in your preferred format.
How to Use
- Click Choose File or drag and drop an image onto the upload area.
- Select By Pixels to enter exact width/height, or By Percentage to scale proportionally.
- Check Lock aspect ratio to prevent distortion when resizing by pixels.
- Choose your preferred output format (JPEG, PNG, or WebP) and adjust quality.
- Click Resize Image, then Download the result.
Tips
Use WebP format for the smallest file size while maintaining quality. Use PNG for images with transparency. JPEG works best for photographs.
Frequently Asked Questions
No. Everything happens entirely in your browser using the Canvas API. Your image never leaves your device and is never sent to any server.
Yes — reducing the pixel dimensions generally reduces file size. You can also control this further with the quality slider when saving as JPEG or WebP.
Locking the aspect ratio means when you change the width, the height is automatically adjusted (and vice versa) to keep the same proportions as the original image, preventing it from appearing stretched or squished.
Yes, but enlarging an image beyond its original dimensions will reduce quality and may cause blurriness, since there is no new pixel data to add. It's best to resize downward whenever possible.
Use JPEG for photos where small file size matters. Use PNG for graphics, logos, or images with transparency. Use WebP for the best combination of quality and compression — it's supported by all modern browsers.