Free tools

Image Resizer

Resize images, keep aspect ratio. Batch processing + ZIP download.

How it works

Choose or drag images (up to 30 files at a time, 50 MB each).
Enter the width and height in pixels. With "Keep ratio" on, one side is enough; the other is calculated from the ratio.
Press PROCESS and download the results one by one or as a ZIP.

Frequently asked questions

Are my files uploaded to a server?

No. Everything runs in your browser; your files never leave your device.

What happens if I enter both sides?

With "Keep ratio" on, the image is fitted inside a box of that size without distortion. With it off, the image is set to exactly that size and may look stretched if the ratio differs.

Can I make an image bigger?

Yes. If the size you enter is larger than the original, the image is enlarged, but no detail is added, so it may look blurry.

Does the format change?

No. JPG, PNG and WebP keep their format; other formats are saved as PNG. JPG and WebP are saved at 92% quality, PNG is lossless.