A JPEG (Joint Photographic Experts Group) is a widely used digital image format that utilizes [13, 38]. This means that to reduce file size, some image data is permanently discarded, though the quality loss is often imperceptible at high settings [15, 38].

: There is no technical difference between .jpg and .jpeg ; both refer to the same format [7]. The three-letter version originated from older Windows systems that required three-character extensions [16].

For further guidance on creating or optimizing image files for specific uses like publishing, the IngramSpark File Creation Guide offers detailed specifications for professional layouts [36].

: For high-quality prints viewed up close, a resolution of 300 DPI (dots per inch) is the standard guideline [39].

: Setting a JPEG to "100" quality still involves a compression ratio of about 2.6:1, whereas lower settings like "20" significantly reduce file size at the cost of visible artifacts [38].

: Professional photographers often use tools like ExifTool to manage internal data (like timestamps) or FastStone Image Viewer for a more visual interface [35].

: You can add text or mark up these images using tools like Adobe Photoshop or online annotators such as Evernote [1, 2, 3]. Production and Management