Can I resize without stretching the image?
Yes. Proportions remain locked by default. You may unlock them deliberately when an exact width and height are required.
- Width, height, percentage, and longest-edge modes
Guide
Create the exact dimensions you need without placing a private photo on someone else’s server.
Resize a JPG, PNG, or WebP by width, height, percentage, longest edge, or bounding box. Keep proportions and process the image locally.
Clear answers
Create the exact dimensions you need without placing a private photo on someone else’s server.
Resize a JPG, PNG, or WebP by width, height, percentage, longest edge, or bounding box. Keep proportions and process the image locally.
Can I resize an image by percentage?
Yes. Choose percentage mode and enter the percentage of the original dimensions you want.
- Aspect-ratio lock by default
Does NullKit retain my photo?
No. The selected image is read and resized locally in the current browser tab.
- Live output-dimension calculation
A local check
Create the exact dimensions you need without placing a private photo on someone else’s server.
Resize a JPG, PNG, or WebP by width, height, percentage, longest edge, or bounding box. Keep proportions and process the image locally.
Selected file
Choose a JPG, PNG, or WebP image.
Choose a JPG, PNG, or WebP image.
Review before sharing
Aspect-ratio lock by default
Select a resize mode and enter the desired dimensions.
Local verification
Review the calculated output dimensions.
Review the calculated output dimensions.
Resize locally and download the new copy.
Four local steps
Can I resize an image by percentage?
- 01
Width, height, percentage, and longest-edge modes
Choose a JPG, PNG, or WebP image.
- 02
Aspect-ratio lock by default
Select a resize mode and enter the desired dimensions.
- 03
Live output-dimension calculation
Review the calculated output dimensions.
- 04
Width, height, percentage, and longest-edge modes
Resize locally and download the new copy.
Browser privacy
Private Image Resizer
Width, height, percentage, and longest-edge modes
Yes. Proportions remain locked by default. You may unlock them deliberately when an exact width and height are required.
Aspect-ratio lock by default
Yes. Choose percentage mode and enter the percentage of the original dimensions you want.
Live output-dimension calculation
No. The selected image is read and resized locally in the current browser tab.
Clear answers
Does NullKit retain my photo?
No. The selected image is read and resized locally in the current browser tab.
- Making a small image larger cannot recreate missing detail.
- Re-encoding can change file size, metadata, and color behavior.
- Very large output dimensions may exceed browser memory.
Private workspace
Private Image Resizer
Create the exact dimensions you need without placing a private photo on someone else’s server.