Image Resizer
Resize images to any dimension while maintaining aspect ratio. Supports PNG, JPG, and WebP.
Drop your image here
Supports PNG, JPEG, WebP — up to 10 MB
How to Use Image Resizer
- 1Upload or drag and drop an image (PNG, JPG, or WebP).
- 2Enter the desired width and height in pixels.
- 3Toggle "Maintain aspect ratio" to keep proportions or set custom dimensions.
- 4Click "Resize" to process the image in your browser.
- 5Download the resized image with the "Download" button.
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Frequently Asked Questions
Can I maintain the aspect ratio?▾
Yes. By default, the aspect ratio is locked. Change either width or height and the other will adjust automatically. Click the lock icon to enable free-form resizing.
What's the maximum image size?▾
There's no hard limit, but very large images (over 50MP) may slow down your browser. We recommend images under 20 MB for best performance.
Is my image uploaded to a server?▾
No. All resizing happens entirely in your browser using the Canvas API. Your images never leave your device.
What output format will I get?▾
Resized images are exported as PNG files for lossless quality. PNG works well for most use cases including web, social media, and print.
Does this work on mobile devices?▾
Yes. The resizer runs entirely in your browser and works on any modern device including smartphones and tablets.
What are the preset sizes for?▾
Presets let you quickly resize to common dimensions like 50% or 25% of the original, or standard screen resolutions like 1080p and 720p. You can also enter custom width and height values.
Will resizing reduce image quality?▾
Upscaling (making an image larger) can reduce sharpness since new pixels are interpolated. Downscaling generally preserves quality well. The tool uses high-quality smoothing for the best results.