GIF in the context of Content negotiation

An image file format is a file format for a digital image. There are many formats that can be used, such as JPEG, PNG, and GIF. Most formats up until 2022 were for storing 2D images, not 3D ones. The data stored in an image file format may be compressed or uncompressed. If the data is compressed, it may be done so using lossy compression or lossless compression. For graphic design applications, vector formats are often used. Some image file formats support transparency.

Raster formats are for 2D images. A 3D image can be represented within a 2D format, as in a stereogram or autostereogram, but this 3D image will not be a true light field, and thereby may cause the vergence-accommodation conflict.

A raster graphics editor (also called bitmap graphics editor) is a computer program that allows users to create and edit images interactively on the computer screen and save them in one of many raster graphics file formats (also known as bitmap images) such as JPEG, PNG, and GIF.

In computing, a bitmap (also called raster) graphic is an image formed from rows of different colored pixels. A GIF is an example of a graphics image file that uses a bitmap.

As a noun, the term "bitmap" is very often used to refer to a particular bitmapping application: the pix-map, which refers to a map of pixels, where each pixel may store more than two colors, thus using more than one bit per pixel. In such a case, the domain in question is the array of pixels which constitute a digital graphic output device (a screen or monitor). In some contexts, the term bitmap implies one bit per pixel, whereas pixmap is used for images with multiple bits per pixel.

Exchangeable image file format (officially Exif, according to JEIDA/JEITA/CIPA specifications) is a standard that specifies formats for images, sound, and ancillary tags used by digital cameras (including smartphones), scanners and other systems handling image and sound files recorded by digital cameras. The specification uses the following existing encoding formats with the addition of specific metadata tags: JPEG lossy coding for compressed image files, TIFF Rev. 6.0 (RGB or YCbCr) for uncompressed image files, and RIFF WAV for audio files (linear PCM or ITU-T G.711 μ-law PCM for uncompressed audio data, and IMA-ADPCM for compressed audio data). It does not support JPEG 2000 or GIF encoded images.This standard consists of the Exif image file specification and the Exif audio file specification.

An Internet meme, or meme (/miːm/, MEEM), is a cultural item (such as an idea, behavior, or style) that spreads across the Internet, primarily through social media platforms. Internet memes manifest in a variety of formats, including images, videos, GIFs, and other viral content. Key characteristics of memes include their tendency to be parodied, their use of intertextuality, their viral dissemination, and their continual evolution. The term meme was originally introduced by Richard Dawkins in his 1976 book The Selfish Gene to describe the concept of cultural transmission.

The term Internet meme was coined by Mike Godwin in 1993 in reference to the way memes proliferated through early online communities, including message boards, Usenet groups, and email. The emergence of social media platforms such as YouTube, Twitter, Facebook, and Instagram further diversified memes and accelerated their spread. Newer meme genres include "dank" and surrealist memes, as well as short-form videos popularized by platforms like Vine and TikTok. Newer internet memes are often defined as brain rot.

Limited animation or (planned animation) is a process in the overall technique of traditional animation that reuses frames of character animation.

WebP (/ˈwɛpi/ WEP-ee) is a raster graphics file format developed by Google and intended as a replacement for the JPEG, PNG, and GIF file formats on the web. It supports image compression (both lossy and lossless), as well as animation and alpha compositing. The sister project for video is called WebM.

Google announced the WebP format in September 2010; the company released the first stable version of its supporting library in April 2018. WebP has seen widespread adoption across the Internet in order to reduce image size, with all major browsers currently supporting the format.

A tweet (officially known as a post since 2023) is a short status update on the social networking site Twitter (officially known as X since 2023) which can include images, videos, GIFs, straw polls, hashtags, mentions, and hyperlinks. Around 80% of all tweets are made by 10% of users, averaging 138 tweets per month, with the median user making only two tweets per month.

Following the acquisition of Twitter by Elon Musk in October 2022, and rebranding of the site as "X" in July 2023, all references to the word "tweet" were removed from the service, changed to "post", and "retweet" changed to "repost". The terms "tweet" and "retweet" are still more popular when referring to posts on X.

The phenakistoscope (also known by the spellings phénakisticope or phenakistiscope) was the first widespread animation device that created a fluid illusion of motion. Dubbed Fantascope and Stroboscopische Scheiben ('stroboscopic discs') by its inventors, it has been known under many other names until the French product name Phénakisticope became common (with alternative spellings). The phenakistiscope is regarded as one of the first forms of moving media entertainment that paved the way for the future motion picture and film industry. Similar to a GIF animation, it can only show a short continuous loop.