Change dimensions by percentage or pixels. Everything runs locally in your browser — your files are never uploaded to a server, no registration is required, and the tool is completely free.
How to Resize Image
Upload the image you want to resize.
Choose between resizing by pixel dimensions or percentage.
Set your target width and height, with optional aspect ratio lock.
Download your resized image.
Features
Pixel or Percentage Resizing: Resize by entering exact pixel dimensions or by specifying a percentage scale factor.
Aspect Ratio Lock: Maintain the original proportions to prevent distortion when changing dimensions.
High-Quality Interpolation: The resize algorithm uses bicubic interpolation for smooth, high-quality scaling.
Instant Preview: See the target dimensions before processing so you know exactly what size your output will be.
Frequently asked questions
Can I resize without stretching the image?
Yes. Enable the "Maintain Aspect Ratio" option and only set one dimension — the other will be calculated automatically.
Will making an image larger reduce quality?
Enlarging images beyond their original resolution can cause some softness. For best results, upscale modestly (2x maximum).
What formats are supported for resizing?
The tool supports JPG, PNG, WEBP, BMP, and most standard image formats.
Can I resize to exact social media dimensions?
Yes. Enter the exact pixel dimensions required by your platform (e.g., 1080x1080 for Instagram, 1200x630 for Facebook).