Resize without uploading
Image decoding, resizing and export happen locally in your browser.
Private · Browser-based · No upload
Resize Image Online
Change image dimensions by pixels or percentage while keeping the aspect ratio when you need it.
JPG · PNG · WebP · AVIF · HEIC · HEIF · TIFF · SVG · JFIF
Drop an image hereor click to choose a fileSupports common images, HEIC/HEIF and TIFF
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Precise dimensions
Enter exact width and height or use a percentage while optionally locking the original ratio.
Flexible crop
Use Free, 1:1, 4:3, 3:2 or 16:9, then move or resize the crop box.
How to use Resize Image Online
- 1
Add your image
Choose a file from your device or drag it into the tool. Supported files are processed directly in your browser.
- 2
Choose the result you need
Use the controls shown on this page for this exact task. The page keeps the relevant format or operation preselected when possible.
- 3
Preview and download
Check the result, then download the finished image. No account is required.
About Resize Image Online
Resize changes output dimensions by pixels or percentage. Lock the aspect ratio to avoid accidental distortion.
Frequently asked questions
Are my images uploaded to a server?
No. Supported image processing runs locally in your browser. Third-party decoder code may be loaded only when a format needs it, but your image itself stays on your device.
Do I need an account?
No. The current ViewerPix tools work without registration.
Does this work on mobile?
Yes. The interface is responsive, although very large images can be limited by the memory available in the browser.
Private browser processing
ViewerPix processes supported images on your device. Your image files are not uploaded to a ViewerPix application server for this task.