Keyframe animation is an essential concept in the world of animation and graphic design. This technique makes it possible to create complex movements and transformations in animated media, whether in films, video games or web design. It forms the basic framework for the representation of movement and change in digital media.

The term "keyframe" refers to key frames that mark the beginning and end of an animation or movement. The actual animation takes place between these keyframes. The properties of an object, such as position, size, colour and other attributes, are defined in the keyframes. The system then automatically interpolates the values between the keyframes to create a smooth animation.

Keyframe animations offer several advantages:

1 **Precise control:** Developers and designers have full control over the course of an animation. They can precisely define the properties of an object in each keyframe.

2 **Realism and fluidity:** By using keyframes, realistic movements and transitions can be created, which are important in animation and design.

3 **Efficiency:** It is possible to create complex animations with comparatively few keyframes, which increases efficiency when creating and editing animations.

4 **Customisability:** Changes to a keyframe animation are relatively easy to make as they only require the adjustment of the keyframes.

In the world of web design, keyframe animations have become extremely relevant. They are used to bring elements on a website to life, be it through the smooth floating of a menu or the eye-catching presentation of content when scrolling. CSS (Cascading Style Sheets) provides a way to integrate keyframe animations into web designs. By defining keyframes in CSS, developers can create complex animations for websites without having to rely on external tools or plugins.

In the film and video game industry, keyframe animation is a standard process for creating character animations, special effects and environmental animations. Animators create carefully defined keyframes to control the movements and behaviours of characters and objects in a scene.

To summarise, keyframe animations are an indispensable tool for creating movement and interaction in digital media. They offer precision, control and creative possibilities that form the basis for impressive animations and appealing design.