How to use this tool

1. Fill in the inputs.
2. Read the result.
3. Copy or download as needed.

About the Image Resizer

The Image Resizer changes the pixel dimensions of an image to whatever width and height you specify, which is useful for fitting an image into a specific space, meeting a platform's upload requirements, or simply reducing an oversized photo down to a more manageable size. Upload an image, adjust the width and height fields, and download the resized result as a PNG.

Because the tool pre-fills the width and height fields with the image's original dimensions, you can see exactly what you are starting from and adjust from there, whether you need an exact pixel size or just want to scale the image down proportionally.

When you enter new width and height values, the tool draws your original image onto an HTML canvas element set to those exact dimensions, which effectively stretches or shrinks the image to fit the new size. This happens using the browser's built-in image-drawing capabilities, so the resize is fast and requires no server upload.

Note that entering a width and height that do not match your original image's aspect ratio will stretch or squash the image rather than cropping it — if you need to preserve the original proportions exactly, calculate a matching width and height pair (for example, by keeping the same ratio between width and height as the original image) before resizing, or use the Image Cropper tool instead if you specifically need to crop to a fixed aspect ratio.

Common use cases

• Resizing a photo to meet a specific upload requirement, such as a profile picture or thumbnail size.
• Shrinking a large photo down to a smaller, web-friendly size before publishing it online.
• Preparing images for print or design work that requires exact pixel dimensions.
• Standardizing a batch of images to the same dimensions one at a time.
• Quickly checking what an image would look like at a different size before using it elsewhere.

Tips and best practices

• To resize proportionally without distortion, calculate your new height by dividing the new width by the original width and multiplying by the original height (or vice versa) before entering the values.
• Enlarging an image beyond its original dimensions can make it appear blurry or pixelated, since resizing up cannot add detail that was not present in the source image.
• The output is always saved as a PNG file, which preserves quality well but can result in a larger file size than a compressed JPEG for photographic images.
• If you need to reduce file size in addition to changing dimensions, consider running the resized image through the Image Compressor afterward.

Frequently asked questions