Resize image
Change image dimensions by pixels, percentage or useful presets.
Drop an image here
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Resize an image precisely while keeping its aspect ratio. Use custom dimensions or a ready-made social preset. Set dimensions in pixels or by percentage, or start with a social preset. The source file remains unchanged and all processing runs locally in your browser.
Why use this tool
- Lock the aspect ratio to calculate the other dimension automatically.
- Create the required width and height while keeping control of output quality.
- Preview and process the file locally without sending it to an image server.
How it works
- Choose a JPG, PNG or WebP image and check the preview.
- Lock the aspect ratio to calculate the other dimension automatically.
- Apply the operation and download the result in the source format.
How the operation works
Resizing resamples the source pixels to the selected dimensions. Enlarging creates new pixels but cannot restore detail absent from the original.
Unlocking the aspect ratio allows any width and height, which can stretch the image; transparent PNG and WebP pixels remain transparent.
Complementary image tools
Private by design
Your files stay on your device. Processing starts only when you choose an image, and nothing is stored on our servers.
Frequently asked questions
Are my images uploaded?
No. Processing happens locally in your browser, so your image files never leave your device.
Will resizing distort my image?
Keep the aspect-ratio option enabled to avoid stretching.
How do I resize without stretching the image?
Resizing resamples the source pixels to the selected dimensions. Enlarging creates new pixels but cannot restore detail absent from the original.
Does enlarging an image improve its detail?
Unlocking the aspect ratio allows any width and height, which can stretch the image; transparent PNG and WebP pixels remain transparent.
Does resizing change my original file?
No. The browser creates a new downloadable result and leaves the selected source file unchanged.
Can I use this tool on a phone?
Yes. Use a current mobile browser that can select a JPG, PNG or WebP file and save downloads.
Which image formats are accepted?
You can use JPG, PNG and WebP. Border and Round export PNG; the other operations keep the input format.
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