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Compression Artifact

Compression Artifact (Visual Distortion)

Compression artifacts are visible distortions introduced by lossy compression algorithms. Common artifacts include blockiness (JPEG macroblocks), ringing around sharp edges, color banding in gradients, and mosquito noise.

Detalle técnico

JPEG artifacts result from quantization of DCT coefficients, where high-frequency detail is discarded. Artifacts worsen at lower quality settings and accumulate with repeated saves (generation loss).

Ejemplo

```javascript
// Image compression via Canvas
canvas.toBlob(
  blob => console.log(`Size: ${(blob.size/1024).toFixed(0)} KB`),
  'image/jpeg',
  0.8  // quality: 0.0 (smallest) to 1.0 (best)
);

// WebP output (25-34% smaller than JPEG)
canvas.toBlob(cb, 'image/webp', 0.8);
```

Formatos relacionados

.jpeg

Herramientas relacionadas

C Compress Image R Resize Image C Crop Image R Rotate Image F Flip Image C Convert Image W Watermark Image S SVG to PNG I Image to Base64 R Round Corners A Add Border I Image Filters A Adjust Image B Blur Image S Sharpen Image M Make Square G Grayscale Image S Sepia Image P Pixelate Image S Strip Image Metadata

Términos relacionados

Alpha Channel Lossy Compression Lossless Compression Bit Depth Chroma Subsampling AVIF Alpha Compositing Batch Resize Aspect Ratio Compression Ratio Compression (Audio) Canvas