Resize Image
Change image dimensions by exact pixels or percentages. Free, instant, private.
How to use Resize Image
- 1
Upload your image
Drop or click to select any JPG, PNG, WebP, or AVIF image you want to resize.
- 2
Set dimensions
Enter a specific Width or Height. By default, proportions are locked so your image won't stretch.
- 3
Download
Click 'Resize Image' to instantly scale and download the new file.
Frequently asked questions
How do I resize an image by pixels or percentage?
Upload your image, choose either 'Pixels' or 'Percentage' mode, enter your desired values, and click resize.
What technology powers this image resizer?
We use Pica, a high-quality WebAssembly-based image resizing engine, for crisp, pixel-perfect results.
How do I maintain the original aspect ratio while resizing?
Ensure the 'Lock aspect ratio' icon is enabled between the width and height inputs.
How does percentage resizing work?
Instead of entering exact pixels, you simply scale the image up or down by a set percentage (e.g., 50% for half size).
Can I resize images to exact pixel dimensions?
Yes, switch to 'Pixels' mode to manually type in exact width and height values.
Is resizing executed locally inside my web browser?
Yes, all resizing is processed locally without uploading files to a server.
Is there any fee for resizing images?
No, the image resizer is completely free to use.
Which image formats can be resized using this tool?
We support resizing for JPG, PNG, WebP, and AVIF formats.
Does resizing images degrade pixel sharpness?
Our advanced Lanczos resampling algorithms ensure the resized image remains as sharp and clear as possible.
Can I resize images on mobile phone browsers?
Yes, the interface is fully mobile-friendly.
Are watermarks added to resized pictures?
No, resized images are always watermark-free.
Is software download required to resize photos?
No, everything runs seamlessly inside your browser.
How fast is WebAssembly image resizing?
WebAssembly allows resizing to complete in milliseconds, far faster than traditional server-side tools.
Can I resize images for web design and development?
Yes, resizing images to exact dimensions helps improve website load times and performance.
Does resizing strip original image metadata?
Depending on browser canvas implementations, some metadata may be removed during the resizing process.
What happens if I unlock the aspect ratio lock?
You can enter independent width and height values, which will stretch or squash the image to fit.
Can I upscale small images to larger dimensions?
Yes, though upscaling significantly may result in a softer or pixelated image.
Can I download the resized file immediately?
Yes, clicking the apply button generates the image for instant download.
Is PNG transparency maintained after resizing?
Yes, transparent backgrounds in PNG files are fully preserved.
Is there a limit on input photo resolution?
Browsers have canvas size limits (typically around 16,384x16,384 pixels), but standard high-res photos process flawlessly.