An image extension refers to the file extension of an image file, indicating the format of the image data. File extensions are typically a few characters appended to the end of a file name and separated by a dot. Common image file extensions include: 1. JPEG/JPG (Joint Photographic Experts Group): .jpeg or .jpg 2. PNG (Portable Network Graphics): .png 3. GIF (Graphics Interchange Format): .gif 4. BMP (Bitmap): .bmp 5. TIFF (Tagged Image File Format): .tiff or .tif 6. SVG (Scalable Vector Graphics): .svg 7. RAW: The file extensions for raw image formats vary depending on the camera manufacturer (e.g., .raw, .cr2, .nef, .arw).These extensions help software and operating systems recognize and interpret the file format, enabling users to view and work with images in various applications.

Documents with the .docx extension are typically created using Microsoft Word, particularly versions from 2007 onwards. This format was introduced as an advancement over the older DOC format. The "X" in DOCX denotes XML, signaling a transition from a purely binary structure to a combination of XML and binary elements. This change not only enhances file structure but also facilitates standardization, making DOCX accessible across various programs beyond Microsoft Word.