What a framebuffer is
A framebuffer is a portion of memory that holds the pixel data for a complete frame of an image, the picture that is to be displayed on a screen. Each pixel's information is stored in this memory, and the display reads from it to show the image. The framebuffer effectively holds the current image in a form ready to be sent to the screen.
Holding a frame of pixels
A displayed image is made up of many pixels, each with its own color information. The framebuffer stores all of these pixel values for one frame together in memory. Because the entire image is held there, the display system can read the whole frame from the framebuffer to present it. This makes the framebuffer the container for the image being shown.
Between rendering and the screen
The framebuffer sits between the process that produces an image and the display that shows it. When graphics are rendered, the resulting pixels are written into the framebuffer. The display then reads the framebuffer to put the image on the screen. This positioning makes the framebuffer a key handoff point, where a finished frame waits to be displayed.
Why framebuffers are useful
Framebuffers are useful because they provide a well-defined place to store the image that is to be shown, separating the work of creating an image from the work of displaying it. The rendering side can fill the framebuffer while the display side reads it. This separation helps organize how images move from being generated to appearing on screen.
Framebuffers in graphics systems
Framebuffers are a basic part of how graphics systems present images. Whenever something is drawn to a screen, its pixels ultimately end up in a framebuffer that the display reads. Understanding the framebuffer clarifies how the final image is held in memory just before it becomes the picture you see, a fundamental step in displaying graphics.
Why it matters
The framebuffer is a fundamental concept in computer graphics and displays. Understanding what it is - memory that holds the pixel data for the image being shown - clarifies how a rendered image reaches the screen. For anyone interested in how displays work, it is a valuable concept to understand.
Related on Skillo
See also: What is VRAM? Explained, What is a pixel? Explained.
Sources
Published date reflects the original event date (2026-09-15). This article is original Skillo editorial written from the sources above; facts were verified in September 2026.
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