Resize Image Online
Free online image resizer. Set exact pixel dimensions or scale by percentage. Supports aspect ratio lock and batch processing.
Click or drag image here
Click or drag image here
Introduction
Image resize tool supports scaling by pixel values or percentage, with optional aspect ratio lock to prevent distortion, or free target dimension setting. Perfect for social media image specifications, email attachment compression, and web image optimization. Real-time preview of adjusted dimensions — download with one click when satisfied.
How to Use
- 1Upload the image to resize
- 2Choose adjustment method: enter target width/height in pixels, or scale by percentage
- 3Toggle aspect ratio lock on/off (locked by default to prevent distortion)
- 4Click 'Resize & Download' to save
FAQ
Does resizing affect image quality?
Shrinking images generally doesn't affect quality. Enlarging will reduce quality (pixels are stretched) — the more you enlarge, the more noticeable. For high-quality upscaling, use the 'AI Upscale' tool.
How do I prepare images for specific platform requirements?
Enter the platform's required pixel dimensions directly (e.g., WeChat avatar 200×200, Weibo cover 1920×1080, etc.) and the tool outputs at that exact size.
What's the difference between resize and crop?
Resize scales the entire image without changing its content. Crop selects a portion of the image, which changes the content.