How to resize an image
- Choose a JPG, PNG or WebP image.
- Enter your new width and height in pixels.
- Keep “Keep aspect ratio” checked to avoid stretching the image.
- Choose the output format and quality, then select “Resize image”.
- Review the result and download your resized image.
Private image resizing
Your selected image is processed locally in your browser. This tool does not upload your image to a NinaTools server. Your browser needs enough memory to process the image.
Frequently asked questions
Which formats are supported?
You can use JPG/JPEG, PNG and WebP images and choose an output format.
Will resizing reduce image quality?
Reducing dimensions can remove detail. The quality setting also affects JPG and WebP compression. PNG does not use a lossy quality setting.
Will my image be uploaded?
No image upload is performed by this tool. Processing happens in your browser, although an internet connection is needed to load the page.
Why is the resized file larger?
File size depends on dimensions, format, image content and quality. A PNG or high-quality image may be larger than the original.
More free tools: HEIC to JPG · Compress JPG.