Image Resizer
Change image dimensions
Image Resizer
Resize images to any dimensions. Maintain aspect ratio option. 100% private - all processing in your browser.
Key Features & Highlights
Resize images to any width and height you need.
All resizing happens in your browser. Images stay on your device.
Optional lock to maintain original aspect ratio automatically.
See resized image immediately with new dimensions.
Works with JPG, PNG, WebP, GIF and BMP images.
Download resized image as PNG for lossless quality.
How to Use Image Resizer
Upload Image
Click to upload any image file from your device.
Set Dimensions
Enter desired width and height in pixels.
Lock Ratio
Optional: keep aspect ratio locked to prevent distortion.
Resize and Download
Click resize button and download the new image.
Frequently Asked Questions
Best size for social media?
Instagram: 1080x1080 (square) or 1080x1350 (portrait). Facebook: 1200x630. Twitter: 1200x675. LinkedIn: 1200x627. YouTube thumbnail: 1280x720.
Will resizing lose quality?
Making smaller: minimal quality loss. Making larger: quality decreases (upscaling is not real detail). For best results, start with high-resolution source.
Should I keep aspect ratio?
Usually yes! Prevents stretching/distortion. Only disable when you need specific dimensions that don't match original ratio.
What size for website?
Hero images: 1920x1080. Blog images: 1200x630. Thumbnails: 400x300. Logos: 200-500px width. Optimize for actual display size.
PNG vs JPG for resized?
PNG: no quality loss, larger file. JPG: some loss, much smaller. For photos: JPG. For graphics/text: PNG. WebP: best of both worlds.
Batch resize possible?
This tool does one at a time. For batch resizing, use dedicated software like XnConvert, IrfanView or Photoshop actions.