Free · In your browser
Resize images online
Set a width or a height and download a smaller image. The other side stays in proportion.
Your files stay on your device. All processing happens locally in your browser. We never upload, store, or view your images.
This tool runs in your browser. Turn on JavaScript to choose images.
How to use it
- 1Add an image. Its current size appears after it loads.
- 2Enter a width or a height. Leave the other field empty to keep the proportions.
- 3Download the resized file.
Good to know
- The long edge cannot exceed 8,192 pixels, and the image cannot exceed 16 megapixels.
- JPEG and WebP also use the quality slider, so a smaller size does not come back as a huge file.
- PNG output stays lossless.
- Enlarging a small image cannot add real detail.
Questions
How do I change only the width?
Type the width and leave the height empty. Glazlo calculates the height from the original proportions.
Can I set both width and height?
Yes. Fill in both fields if you want an exact box. The picture is stretched to those pixels.
Will this crop the image?
No. This page only resamples the whole image. It does not cut off edges.
Is the photo uploaded?
No. Resizing runs on your device.