Resize images online free — set custom pixel dimensions with aspect ratio lock. Export as PNG, JPG, WebP, BMP or GIF. Browser-based.
Image Resizer lets you set width and height in pixels with an aspect ratio lock option. Output in PNG, JPG, WebP, BMP, or GIF format. All processing runs in your browser — no files are uploaded to any server.
aspect_ratio
Drag & drop an image or click to select
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How to use Image Resizer?
Upload the image you want to resize.
Enter the desired width and height.
Use the lock ratio option to maintain the original aspect ratio.
Click resize and download.
Frequently asked questions about Image Resizer
Can I maintain the original aspect ratio?
Yes, with the 'Lock Ratio' option, entering either width or height will automatically maintain the aspect ratio.
How to get the most out of Image Resizer?
Upscaling reduces quality, so resize to smaller dimensions than the original when possible.