What is Image Resizer?
Image Resizer is a free online tool that lets you change the dimensions of any image. Set exact width and height in pixels, or use percentage presets for quick resizing. Toggle aspect ratio lock to prevent distortion. All processing happens in your browser — images never leave your device.
How to Use
- Upload an image — Drag & drop or browse to select your file.
- Set dimensions — Enter width/height or use percentage presets.
- Choose format — Select PNG, JPEG, or WebP output format.
- Download — Click download to save the resized image.
Common Use Cases
🌐 Social Media
Resize images to match platform requirements (Instagram, Twitter, LinkedIn).
📧 Email
Reduce image size before attaching to emails.
🖼️ Web Development
Generate images at specific pixel dimensions for web assets.
🔒 100% Private
Your images are never uploaded — all processing happens locally.