Free Image Resizer Online
Resize JPG, PNG and WebP images to exact pixel dimensions or a percentage of original size. Lock aspect ratio to avoid distortion. Instant, private, free.
Drop image here or browse
JPG, PNG, WebP, GIF supported
✓ Resize complete
About the Image Resizer
This free online image resizer uses the HTML5 Canvas API to resize images entirely within your browser. You can resize by exact pixel dimensions (width × height) or by a percentage of the original size. The aspect ratio lock ensures your image is never stretched or distorted.
Common use cases include resizing product photos for e-commerce platforms, reducing image dimensions before uploading to social media, or preparing images for email attachments.
How to Resize an Image Online
Upload Your Image
Click or drag-drop a JPG, PNG, WebP or GIF image.
Choose Mode
Select "By Pixels" to enter exact width/height, or "By Percentage" to scale proportionally.
Set Dimensions
Enter your target size. Toggle the lock icon to maintain or break aspect ratio.
Download
Click "Resize Image" then download. Output is available in JPEG, PNG or WebP.
Frequently Asked Questions
Downscaling (making smaller) generally looks excellent. Upscaling (making larger) uses bicubic interpolation via Canvas and may introduce some blurriness at extreme enlargements. For best upscaling quality keep enlargement under 150%.
The resizer currently handles one image at a time. For batch resizing use the Image Compressor which supports up to 20 files.
Input images up to 50 MB and up to 16,000 × 16,000 pixels are supported. Very large files may take a few seconds to process on mobile devices.
The lock icon between Width and Height is enabled by default. When locked, changing one dimension automatically updates the other to maintain the original proportions.