JPG file format
| Extension | .jpg |
| Category | images |
| Programs | Microsoft Windows Photo Gallery Viewer Adobe Photoshop Adobe Suite Apple Preview Corel Paint Shop Pro Most web browsers |
| Description | .jpg (Joint Photographic Experts Group) The .jpg or JPEG format is a widely used method of lossy compression for digital images, especially for those images produced by digital photographyThe compression level can be adjusted, allowing a selectable balance between storage size and image quality. JPEG is commonly used for storing and transmitting photographs on the World Wide Web, and it's also a standard format used by digital cameras and other photographic image capture devices. |
| Technical details | The JPEG file format (.jpg or .jpeg) is a popular lossy compression method for digital images. Key features include: - Compression: Uses lossy Discrete Cosine Transform (DCT) compression, allowing adjustable balance between image quality and file size. - Color Models: Primarily uses YCbCr color space, also supports grayscale and CMYK. - Quality Levels: Adjustable compression trade-off between file size and image quality. - File Structure: Comprises segments with markers, headers, and entropy-coded data, including metadata like quantization and Huffman coding tables. - Standardization: An international standard (ISO/IEC 10918-1, ITU-T Recommendation T.81). - Metadata: Supports Exif, ICC color profiles, and XMP data. - Progressive Decoding: Offers both baseline and progressive JPEGs, enhancing detail level progressively. - Applications: Extensively used in digital photography and web imaging. - Limitations: Can produce artifacts at high compression levels, not ideal for text or line drawings. - Support: Universally supported across browsers, image software, and cameras. - Subsampling: Uses chroma subsampling for further size reduction with minimal quality loss. - File Extensions: Variants include .jpg, .jpeg, .jpe, .jif, .jfif, .jfi, with .jpg and .jpeg being most common. - Exif Orientation Tag: Supports automatic display orientation. JPEG is a cornerstone in digital imaging, balancing image quality and file size for various applications. |
| MIME type | image/jpeg |
jpg converter
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jpg converter
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