The primary colors in the RGB color model are Red, Green, and Blue. Yellow is a secondary color, created by mixing Red and Green.

A grid system helps align elements, create a consistent layout, and improve accessibility by ensuring that elements are properly spaced and organized.

PNG (Portable Network Graphics) is a lossless image format that supports transparency and is commonly used for images with sharp lines and text.

Alt text (alternative text) is primarily used to provide a description of an image for accessibility purposes, allowing visually impaired users to understand the content of the image.

Minifying CSS and JavaScript files, using a CDN, and enabling browser caching are all common techniques used to improve the performance of a website by reducing file sizes, improving load times, and reducing server load.

A style guide in graphic design serves multiple purposes, including ensuring consistency in design elements, improving communication between designers and clients, and establishing brand identity.

Images, videos, and audio are common types of media used in web design, while spreadsheets are not typically used in this context.

Image optimization involves a combination of techniques, including compression, resizing, and cropping, to reduce file size and improve load times while maintaining visual quality.

Grid layout, Flexbox layout, and Liquid layout are common types of layouts used in web design, while Fixed layout is less commonly used due to its limitations in responsiveness.

Responsive design is primarily used to create websites that can adapt to different screen sizes and devices, ensuring a consistent user experience across platforms.

Monochromatic, Complementary, and Triadic are common color schemes used in design, while Tetradic is less commonly used due to its complexity.

Composition refers to the process of selecting and arranging elements in a design to create a visually appealing and cohesive whole.

Serif, Sans-serif, and Script are common types of typography used in web design, while Display is less commonly used due to its decorative nature.

White space is used in design to improve readability, create visual hierarchy, and add emphasis to certain elements, contributing to the overall visual appeal and usability of a design.

Lossless compression, Lossy compression, and Progressive JPEG are common image optimization techniques, while Image cropping is not directly related to image optimization.