Batch Resize
Batch Image Resize
Processing multiple images at once to change their dimensions to a uniform size or percentage of the original.
技术细节
Batch Resize determines the level of detail an image can capture. In digital imaging, resolution is typically stated as width x height in pixels (e.g. 3840x2160 for 4K). For print, PPI (pixels per inch) maps these pixels to physical dimensions — 300 PPI is standard for professional printing while 72-96 PPI suffices for screen display. Increasing resolution beyond the original capture requires interpolation algorithms (bicubic, Lanczos) that estimate new pixel values, which adds softness rather than true detail.
示例
```javascript
// Resize image using Canvas API
const canvas = document.createElement('canvas');
canvas.width = 800;
canvas.height = 600;
const ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0, 800, 600);
canvas.toBlob(blob => {
// Download resized image
saveAs(blob, 'resized.png');
}, 'image/png');
```
相关工具
相关术语
Metadata
Rasterization
Resolution
DPI
Color Space
Alpha Channel
Lossy Compression
Lossless Compression
EXIF
Color Profile
Bit Depth
Vector Graphics
Raster Graphics
Chroma Subsampling
HDR
WebP
AVIF
Sprite Sheet
Thumbnail
Crop
Resize
Image Optimization
Image Histogram
Noise Reduction (Image)
Panorama Stitching
Image Segmentation
Object Detection
Feature Matching
Image Interpolation
Dithering (Image)
Alpha Compositing
Image Pyramid
Mipmap
Texture Atlas
Image Registration
Morphological Operations
IPTC
ICC Profile
Gamut Mapping
Tone Mapping
Chromatic Aberration
Vignetting
XMP
Color Grading (Image)
Focus Stacking
Content-Aware Fill
Aspect Ratio
Batch Processing
Convolution
Canvas
Compression Artifact
DPI/PPI
Gamma
Histogram