Introduction to Bitmaps and Raster Graphics

Every digital screen you look at relies on pixels to render images, but understanding how these images are structured is crucial for any designer, developer, or digital creator. This text-based course breaks down the complex world of raster graphics into clear, easy-to-understand concepts. You will transition from simply viewing digital images to understanding exactly how they are stored, rendered, and optimized. What you'll learn: Understand the fundamental differences between bitmap and vector graphics; Explore how pixels, resolution, and pixel density impact image clarity; Analyze color depth and how bit depth determines the range of colors; Calculate raw image file sizes using dimensions and color bit depth; Compare modern web image formats including PNG, JPEG, WebP, and AVIF; Master the principles of lossy and lossless compression. We begin with essential terminology and the absolute basics of pixel grids before guiding you through color representation and compression standards. This course is designed entirely for beginners, requiring no prior experience in computer science or graphic design. Start reading today to build a professional foundation in digital imaging.