What is Image Resizer?
Free online image resizer. Resize by exact pixels, percentage scaling, or social media presets (Instagram, Facebook, Twitter, etc.). Smart aspect ratio lock prevents distortion. Output in JPG, PNG, or WebP. Perfect for web optimization, social media images, and e-commerce product photos. All processing runs locally in your browser — images never leave your device.
Use Cases
- ◆Social media image sizing
- ◆E-commerce product photo normalization
- ◆Web image optimization
- ◆ID photo resizing
- ◆Thumbnail generation
How to Use
- 1Upload your image
- 2Enter target width/height or choose a preset
- 3Check aspect ratio lock
- 4Download the resized image
Features
- ✓Pixel/percentage/presets
- ✓Aspect ratio lock
- ✓JPG/PNG/WebP output
- ✓Live preview
- ✓Browser-based
- ✓Free unlimited
FAQ
Does resizing reduce quality?
Downscaling never reduces visual quality. Upscaling may cause slight blur — try our AI Image Upscaler for best results.
Does it support batch resizing?
Currently one image at a time, but processing is instant.
What presets are available?
Instagram posts/stories, Facebook covers, Twitter headers, YouTube thumbnails, and more.
What is Image Resizer?
Image Resizer runs entirely in your browser. No uploads, no registration required.
How does Image Resizer process data?
All processing happens locally using JavaScript APIs. Your data never leaves your device.
What browsers does Image Resizer support?
Chrome 90+, Firefox 88+, Safari 14+, Edge 90+. Requires JavaScript enabled.