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Resize an image
Set a maximum width and height and get the image back at that size, in proportion and in the same format. The resizing happens in your browser.
Resize image
Say it the way you would say it to a person. Your words are matched to one of 18 tools by readable rules, and the tool runs right here in your browser. No upload, no account.
This tool runs in your browser and needs JavaScript turned on.
How to resize an image
- Drop a PNG, JPEG or WebP into “Your files”.
- Say the size you want — “resize it to 800px wide” — or set the maximum width and height in the settings form (1200 px on this page).
- Check the new dimensions and file size in the answer.
- Download the resized image from Results, in its original format.
Things you can type: resize it to 800px wide resize this image to 400px
In proportion, and never enlarged
The width and height are maximums: the image is scaled down until it fits inside both, keeping its proportions, so nothing is stretched or cropped. An image already smaller than the box is left at its own size rather than blown up.
The format stays as it was — a JPEG stays a JPEG, a PNG stays a PNG — unless you choose another in the settings form.
Smaller dimensions, smaller file
Resizing is the most effective way to make an image file smaller: a 4000-pixel photo shown 800 pixels wide carries about 25 times the pixels it needs. To cut the size further, compress it as well.
Common targets: 1200 pixels wide for a blog or a social post, 800 for an email, 400 for a thumbnail. Type the size you want, and the answer shows the new dimensions and file size before you download.
This page runs the image converter, set up for one job. Open that page for everything it can do.
Questions
Resize image: common questions
Can I make an image bigger?
No. Enlarging cannot add detail, so the resizer only scales down; an image smaller than the size you set is left as it is.
Does it keep the aspect ratio?
Always. It fits the image inside the width and height you give, in proportion.
Is my image uploaded?
No. Your browser resizes it on your device.