Resize Images Online, Free and Without Uploading Anything
Change the dimensions or the file size of your photos in seconds: by pixels, by percentage, or until they fit under a KB limit.
Resize your photos now
Drag in one or several images, choose how you want to resize them and download the result. No signup needed.
Go to the ResizerWhen do you need to resize an image?
Phone photos are often 4000 pixels or more on a side, far more than a web page, an email or a profile picture needs. Shrinking them speeds up page loads, fits upload limits on forms and stops social networks from re-compressing them worse than you would.
Resizing is not the same as compressing: resizing changes how many pixels the image has, while compressing changes how much data each pixel uses. Often you want both, size first and compression after.
How to resize an image with OmniPixy
- Open the Resizer.
- Drag in your images (you can add several at once).
- Pick the mode: exact pixels, percentage or maximum size in KB.
- Keep the aspect ratio option on so the photo isn't stretched.
- Download the resized images.
Want the full picture? Read the complete guide on the blog: Complete guide.
Frequently Asked Questions
How do I resize a photo without losing quality?
Make the image smaller instead of larger: shrinking keeps the visible quality, while enlarging degrades it because new pixels have to be invented.
Can I resize a photo to a specific size in KB?
Yes. The maximum weight mode adjusts compression step by step until the file fits under the limit you set, handy for forms that ask for photos under 200 KB or 1 MB.
Are my photos uploaded to a server?
No. Resizing uses your browser's Canvas API, so the images never leave your device.
What is the difference between resizing and compressing?
Resizing changes the number of pixels (for example from 4000 to 1200 pixels wide). Compressing reduces the data the image uses without changing its dimensions. You can combine both.