Choose your images
Select one or multiple JPG, PNG or WebP images from your device.
FREE IMAGE TOOL
Resize Image Online
Resize JPG, PNG and WebP images online for free. Set exact pixel dimensions or scale by percentage, preserve aspect ratio and resize multiple images — no account required.
Drop images here
or choose JPG, PNG or WebP files from your device
Multiple images supported✓ Browser-based processing✓ No account required✓ Simple downloads
Your images
0 images
Resize settings
Same proportionEach image keeps its original aspect ratio.
With multiple images, pixel mode uses the first image's proportions as the starting size. Keep ratio locked to avoid stretching.
Ready to resizeWe’ll resize every image and show the new dimensions before download.
✓
Your resized images are ready
Resize complete.
Your images are read and resized directly in your browser. Octumi does not upload the selected images in this version.
QUICK GUIDE
How to resize an image
Change image dimensions by exact pixels or percentage in a few simple steps.
Choose pixels or percentage
Enter exact dimensions or scale each image up or down by a percentage.
Keep the ratio if needed
Leave Ratio locked on to preserve proportions and avoid stretching the image.
Resize and download
Resize the images, review the new dimensions and download the results.
PIXELS VS PERCENTAGE
Choose exact dimensions or scale proportionally
Pixels lets you set a width and height up to 12,000 px. Percentage scales each image from 25% to 200% while keeping its original proportions.
ASPECT RATIO
Resize without stretching your image
With Ratio locked, changing the width automatically keeps each image proportional. Unlock the ratio only when you intentionally want an exact width and height that may change the image's shape.
FAQ
Resize Image FAQ
Is Octumi's image resizer free?
Yes. You can use the Resize Image tool without creating an Octumi account.
Which image formats can I resize?
Octumi accepts JPG, PNG and WebP images and keeps the corresponding output format.
Can I resize multiple images at once?
Yes. Select multiple images and Octumi can resize them in one session, with individual downloads or Download all.
Can I resize an image to exact pixel dimensions?
Yes. Pixel mode accepts width and height values from 1 to 12,000 pixels.
Can I resize images by percentage?
Yes. Percentage mode provides 25%, 50%, 75%, 100%, 125%, 150% and 200% scaling while preserving each image's proportions.
Does Octumi upload my images for resizing?
No. In this version, the selected images are read and resized directly in your browser.