Image Resizer
Resize images online for free — set exact pixel dimensions or scale by percentage. Supports JPG, PNG, WebP, GIF. Images processed locally in your browser. No signup needed.
Use Image Resizer FreeHow to resize an image online
- 1
Upload your image by clicking or dragging it into the upload zone
- 2
Set the target width and height — toggle aspect ratio lock to scale proportionally
- 3
Click Download to save your resized image
Frequently Asked Questions
How do I resize an image online for free?
Upload your image by clicking the drop zone or dragging it in. Enter your target width and height in pixels, or use percentage scaling. Toggle the aspect ratio lock to scale proportionally so the image is not distorted. Click Download to save the resized image. No signup required and your image never leaves your browser.
Can I resize an image to exact pixel dimensions?
Yes. Enter the exact width and height in pixels. If the aspect ratio lock is enabled, changing one dimension automatically updates the other to maintain proportions. Disable the lock to set width and height independently for precise crop-free resizing.
Does resizing an image reduce its quality?
Downscaling an image reduces file size with minimal visible quality loss. Upscaling — enlarging an image beyond its original dimensions — can cause blurriness because new pixels must be interpolated. For best results, resize images to a smaller size rather than making them larger.
What image formats can I resize?
JPG, PNG, WebP, and GIF formats are all supported. The resized image is downloaded in the same format as the original. If you need to change format at the same time, use the Image Converter tool to convert first, then resize.
Are my images uploaded to a server when I resize them?
No. All resizing runs entirely in your browser using the HTML5 Canvas API. Your images never leave your device — no file is sent to any server. This means you can safely resize personal photos, private documents, or confidential images without any privacy risk.