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Supports JPG, PNG, GIF, WebP
최대 10MB
🖼️ What is Image Resizer?
Image resizing changes the resolution (width × height in pixels) of photos or graphics. You can scale images while maintaining aspect ratio or adjust to specific dimensions for social media. Common uses include website loading optimization, social media formatting, thumbnail creation, and reducing email attachment sizes. All processing happens in your browser — images are never sent to any server.
📋 Recommended Image Sizes by Platform
| Platform | Use Case | Recommended |
|---|---|---|
| Square Feed | 1080×1080 | |
| Story | 1080×1920 | |
| Twitter/X | Post Image | 1200×675 |
| Shared Image | 1200×630 | |
| YouTube | Thumbnail | 1280×720 |
💡 Resizing Tips
- Keep aspect ratio: Prevents image distortion
- Avoid upscaling: Enlarging beyond original size reduces quality
- File size savings: Reducing by 50% cuts file size by ~75%
- Batch processing: Useful for formatting multiple images to same specs
Frequently Asked Questions
Does resizing reduce image quality?▼
Downscaling has minimal quality loss. However, upscaling (enlarging beyond original) interpolates pixels and reduces sharpness. Keep dimensions at or below original size when possible.
What is the difference between keeping aspect ratio and free adjust?▼
Keeping aspect ratio automatically adjusts height when you change width, preventing distortion. Free adjust lets you set any dimensions but may stretch or squeeze the image.
Are images uploaded to a server?▼
No, all processing uses the browser Canvas API locally. Your image data never leaves your device, ensuring complete privacy.
What is Image Resizer?
Resize images to exact dimensions or by percentage while maintaining quality. Lock aspect ratio to prevent distortion. Works with JPG, PNG, WebP, and GIF formats.