.jpeg — Joint Photographic Experts Group
Joint Photographic Experts Group (ISO/IEC JTC 1/SC 29/WG 11) · 1992
What is a .jpeg file?
JPEG (Joint Photographic Experts Group) is a common image file format used for storing digital images. It employs lossy compression, which means some data is discarded to reduce file size, making it ideal for photographs and complex images. JPEG images are widely supported across web browsers, image editors, and digital cameras.
Programs That Open .jpeg Files
| Platform | Program | ||
|---|---|---|---|
| Windows | Paint | Free | Official |
| Adobe Photoshop | Paid | ||
| GIMP | Free | ||
| macOS | Preview | Free | Official |
| Adobe Photoshop | Paid | ||
| Pixelmator Pro | Paid |
Common Problems with .jpeg Files
Frequently Asked Questions
JPEG and JPG are essentially the same file format. 'JPG' is an abbreviation that was used primarily in Windows operating systems that limited file extensions to three letters, while 'JPEG' is the full extension.
No, JPEG uses lossy compression, which means some image data is discarded to reduce file size. This is why it's not ideal for images that require perfect accuracy, like medical scans or technical diagrams.
You can reduce the file size by adjusting the compression level when saving. A higher compression level will result in a smaller file size but lower quality, and vice versa.
Technical Details
JPEG files typically start with the hexadecimal marker `FF D8 FF`. The format supports a wide range of color depths and resolutions, and its compression algorithm can be adjusted to balance quality and file size.
