How to Resize an Image Online for Free
Resizing is one of the most useful image edits: a profile picture that must be square, a photo that's too large to upload, a thumbnail for a website. Doing it in your browser is instant and keeps your image private.
Why resize instead of just compress?
Compression reduces file size but keeps the same dimensions. Resizing changes the actual width and height — the most effective way to shrink an oversized image and speed up web pages.
How to resize an image
- Open the Image Resizer.
- Drop in your image.
- Enter a new width or height — the aspect ratio locks so it never distorts.
- Click Resize and download.
Tips
- Keep the aspect ratio locked to avoid stretched, squashed images.
- Resize before you compress for the smallest possible file.
- For social media, resize to the platform's recommended dimensions.
💡 Tip: A 4000px photo shown at 800px wastes most of its data — resize it down.
Related tools
Compress images, Convert format, Make a favicon.
Frequently asked questions
Will resizing distort my image?
No, as long as the aspect-ratio lock is on — width and height change together.
Are images uploaded when I resize?
No. Resizing runs entirely in your browser.
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