Free Online Image Resizer
SizeDiet is a powerful image resizing tool that runs entirely in your browser. Resize images to exact pixel dimensions, crop with precision, rotate, and flip — all without uploading your files to any server.
Features
- Exact Dimensions: Set precise width and height in pixels
- Preset Sizes: Quick presets for social media and common sizes
- Aspect Ratio Lock: Maintain proportions while resizing
- Crop Editor: Visual cropping with Fill and Fit modes
- Transform: Rotate 90° and flip horizontally/vertically
- Export Options: Download as original format, JPG, PNG, or WebP
- 100% Private: All processing happens in your browser
Popular Resize Presets
- Instagram Post: 1080×1080 (square)
- Instagram Story: 1080×1920 (9:16)
- Facebook Link: 1200×628
- Twitter Header: 1500×500
- YouTube Thumbnail: 1280×720