Pikselit

Pikselit (pixels) are the smallest addressable units of a digital image or display. Each pixel represents a color value at a specific point in a two‑dimensional grid, and together they form the image seen on screens and in photographs. The term pixel is short for picture element.

Most color images store pixel data in a color model such as RGB, where each of the red, green and blue channels has a numeric value. On typical 8-bit-per-channel systems, a pixel encodes 24 bits of color information, yielding 16,777,216 possible colors. Some formats add an alpha channel for transparency, making 32-bit color.

Images are described by their resolution, expressed as width by height in pixels (for example, 1920×1080). Pixel density, measured in pixels per inch (PPI), influences perceived sharpness on a given display. Displays arrange pixels in fixed grids; the exact subpixel layout varies by technology (LCD, OLED, etc.), affecting rendering details and color filtering.

In processing and storage, pixels are the basic units that are manipulated, compressed, or transmitted. Lossy formats (such as JPEG) discard some information to reduce file size; lossless formats (such as PNG) preserve all pixel data. Vector graphics, by contrast, describe images mathematically and are rasterized to pixels when displayed.

In Finnish usage, pikselit refers to these building blocks of digital images and displays. Understanding pikselit is fundamental in image editing, display design, and multimedia production.