Best for
Preparing an image for a specific pixel size in a document, presentation or website.
Private browser tool
Image Resizer
Resize JPG, PNG and WebP images to exact pixel dimensions free. Set width and height and download PNG output locally, without uploading files.
✓ Local processing✓ No uploads✓ No account
PNG→PNG
- 1Add input
- 2Choose options
- 3Get result
Next step
Continue working with your file
Simple by design
From file to result in three steps
- 1
Choose a supported image and check its original dimensions.
- 2
Enter the target width and height, then select Resize image.
- 3
Check proportions in the preview and download the resized PNG.
Practical guidance
When to use Resize image
What you get
The main Resize image action creates PNG output at the width and height you enter. It resizes the whole image without cropping.
Useful tip
Enter dimensions with the same aspect ratio to avoid stretching. For a 4000 × 3000 source, use 1200 × 900 rather than 1200 × 1200.
Calculate the matching height
To preserve proportions, multiply the original height by the new width divided by the original width. Round to a whole pixel before entering the result.
Original: 4000 × 3000 pixels
Target width: 1200 pixels
Target height: 3000 × 1200 / 4000 = 900 pixelsResize, then choose the delivery format
Download the PNG when you need transparency or crisp graphics. For photographs intended for a website or email, continue to the compressor or a format converter and compare the output. Avoid enlarging a small image simply to meet a file-size requirement.
Good to know
Frequently asked questions
Does the resizer keep the aspect ratio automatically?+
When both width and height are entered, both are used. Calculate matching dimensions yourself to avoid distortion. For example, 1600 × 900 and 800 × 450 share the same proportions.
Does resizing crop my image?+
No. The entire image is fitted into the dimensions you enter, which can stretch it if the proportions differ. Use Image Cropper when you need to remove part of the image.
Will a smaller image always have a smaller file size?+
No. The main resize action exports PNG, so a resized JPG or WebP can still become a larger file. Convert or compress the resized result if your priority is download size.
Can enlarging an image restore detail?+
No. Increasing dimensions interpolates existing pixels. It does not recreate detail missing from the source.
Does my file leave my device?+
No. This tool processes your file inside your browser and does not send its contents, name or metadata to Filemivo.
Is Resize image free?+
Yes. It is free to use and has no artificial file-size limit. Your browser and device memory determine the practical limit.