| Extension | JPG |
| Full Name | Joint Photographic Experts Group |
| Type | Image |
| Mime Type | image/jpeg |
| Format | Binary |
| Opens With | Paint.Net, Photoshop |
A JPG file is a compressed and highly efficient image file format whose aim is to store photographic-quality images using a fraction of the storage space compared to other lossy and non-lossy image compression methods available at the time.
The compression used by JPG encoders is "lossy", meaning image colours that are not perceptible to the human eye are discarded during the compression process. The removal of this colour data greatly reduces the size of the final JPG file with no discernible loss in quality.
Due to their compact and high-quality format, JPG files are one of the primary image formats used by websites, digital and phone/tablet cameras, and more. This widespread support means JPG files can be edited within most popular image editing software.
| Extension | TXT |
| Full Name | Data URI Scheme |
| Type | Document |
| Mime Type | text/plain |
| Format | Text |
A data uri is a form of specially encoded ASCII text content that is usually treated as plain text and may thus use the TXT file extension. A data URI is used as a means of storing binary data in a text format with the use of Base64 encoding.
A blob of binary data is Base64 encoded, a process of converting individual bytes of data into an ASCII representation using several characters per byte. This process, once completed, will result in a text file roughly 25% larger than the original binary data file.
The main reason for encoding binary data in such a way is to enable binary files, such as images, to be embedded into HTML and CSS files used by websites. This embedding of the images as text reduces the number of HTTP requests a website needs to make, thus decreasing the load time of websites.
