Raster Graphics: Bitmaps, Color Channels & Pixels
Continuous-tone pixels, RGB color models, and spatial quantization.
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Format Comparison & Technical Specifications
| Output Format | MIME Type | Specification | Type |
|---|---|---|---|
| PNG PNG | image/png | W3C-PNG | Lossless Pixel Grid |
| JPG JPEG | image/jpeg | ITU-T-T81-JPEG | Lossy Photographic Grid |
| BMP Windows Bitmap | image/bmp | MS-BMP-SPEC | Uncompressed Bitmap Pixel Grid |
| TIFF Image | image/tiff | ADOBE-TIFF-SPEC | Tagged Image File Format |
| ICO Windows Icon | image/x-icon | MS-BMP-SPEC | Multi-Resolution Icon Asset |
| TGA Truevision | image/x-tga | TRUEVISION-TGA-SPEC | Truevision Advanced Raster |
| DDS DirectDraw Surface | image/vnd.ms-dds | MICROSOFT-DDS-SPEC | DirectX GPU Compressed Texture |
| PDF Document | application/pdf | ISO-32000-2 | Portable Document Format |
Technical Specifications & Codec Breakdown
Pixel Grids & File Size Scaling
Raster graphics represent images as 2D matrices of colored dots. Doubling an image's width and height quadruples the total pixel count and raw memory footprint, making proper compression essential for web and mobile performance.
Color Bit Depth: 8-Bit vs. 10-Bit vs. 16-Bit
Standard web images use 8 bits per channel (16.7 million colors). Professional photography and HDR imaging use 10-bit or 16-bit channels to prevent color banding in smooth gradients like skies and sunsets.
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