Image Resizer
Resize JPG, PNG and WebP images online by width, height or percentage while keeping the original file unchanged.
Resize Images
Resize JPG, PNG and WebP images online by changing their dimensions without editing the original file.
Choose the width and height you need, keep the original aspect ratio when appropriate, and create a separate resized image for downloads or uploads.
What is an image resizer?
An image resizer changes the pixel dimensions of an image. It is useful when a website, application, profile, document, social platform or other upload form requires a specific width or height.
iToolsEra supports JPG, PNG and WebP images and creates a separate resized result, so the original upload remains unchanged.
How does the image resizer work?
Upload an image and provide the dimensions you need. The resizer calculates the output dimensions and creates a new image at that size. When maintaining the original aspect ratio is important, use proportional resizing instead of stretching the image.
Resizing changes dimensions in pixels. It is different from compression, which primarily targets the file size in KB or MB.
When should you resize an image?
- Resize large photos before uploading them to a website.
- Match required width and height for profile pictures or social media images.
- Create smaller versions for email, forms or online applications.
- Reduce image dimensions when the original is unnecessarily large for its intended display size.
- Keep the aspect ratio when you want to avoid stretching or squashing the image.
Helpful Guides
Learn how to use this tool for common real-world tasks.