图片尺寸调整
将图片调整为自定义尺寸或常见预设尺寸
Resizer Engine
v2.0 Premium Logic
Drop a file here or click to browse
Max size: 20MB
Awaiting Command
Pixel-perfect scaling awaits
Export Statistics
Target Width
800px
Target Height
600px
Image Resizer — Resize Images Online Free
Resize any image to custom dimensions or common presets — instantly, in your browser. Supports JPG, PNG, and WebP. Maintain aspect ratio or stretch to exact dimensions.
FAQ
How do I resize an image without losing quality?
Downscaling (making smaller) preserves quality well. Upscaling (making larger) introduces blur since pixel data has to be interpolated — use AI upscaling for better results.
What does 'maintain aspect ratio' mean?
It keeps the width-to-height proportion locked. If you change the width, the height adjusts automatically so the image doesn't look stretched.
What size should images be for websites?
Hero images: 1920×1080px. Blog images: 1200×630px. Thumbnails: 400×300px or smaller. Always compress after resizing.
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