{"id":"image-jp2","mimeType":"image/jp2","name":"JPEG 2000 Core Image File","shortName":"JPEG-2000","category":"Professional \u0026 Archival","extensions":[".jp2",".j2k",".jpf",".jpx",".jpm"],"description":"JPEG 2000 is a highly scalable image compression standard and coding system based on wavelet technology. It offers both lossless and lossy compression, delivering superior quality at lower bitrates compared to standard JPEG, and is heavily utilized in digital cinema, medical imaging, and archival preservation.","seo":{"title":"image/jp2 MIME Type | Complete Developer Reference \u0026 Magic Bytes","description":"Complete reference for the image/jp2 MIME type: magic bytes, browser support matrix, HTTP headers, developer snippets, and technical specifications for JPEG 2000.","faqs":[{"question":"What is the magic byte for JP2?","answer":"JP2 files start with a specific 12-byte signature box. In hex, this sequence is 00 00 00 0C 6A 50 20 20 0D 0A 87 0A, which translates to a box size of 12 followed by the 'jP  ' string and a carriage return/line feed sequence."},{"question":"Why use JPEG 2000 instead of standard JPEG?","answer":"JPEG 2000 uses a Discrete Wavelet Transform (DWT) instead of the Discrete Cosine Transform (DCT) used by standard JPEG. This prevents blocky artifacts at high compression ratios, supports mathematically perfect lossless compression, and allows for progressive decoding by resolution or quality."},{"question":"Is JPEG 2000 supported in web browsers?","answer":"Support is very poor. Historically, only Apple's Safari supported JPEG 2000 natively. Modern versions of Chrome, Firefox, and Edge do not support it, meaning web developers must use fallbacks like WebP, AVIF, or standard JPEG."}]},"index":{"compression":["Lossy","Lossless"],"browserSupport":{"score":2,"label":"Poor (Safari Only)"},"commonUses":["Digital Cinema (DCP)","Medical Imaging (DICOM)","Geospatial Data","Archival Preservation"]},"technical":{"magicBytes":{"hex":"00 00 00 0C 6A 50 20 20 0D 0A 87 0A","ascii":"....jP  ...."},"container":"JP2 (ISO/IEC 15444-1)","compressionAlgorithm":["Discrete Wavelet Transform (DWT)"],"colorDepth":["8-bit","16-bit","32-bit","38-bit"],"transparency":true,"animation":false,"metadata":{"exif":true,"xmp":true,"iccProfile":true},"alphaChannel":true,"progressiveLoading":true,"hdrSupport":true},"history":{"developer":"Joint Photographic Experts Group","released":"2000","specification":"ISO/IEC 15444-1"},"browserSupport":{"chrome":false,"chromeVersion":"None","firefox":false,"firefoxVersion":"None","safari":true,"safariVersion":"5+","edge":false,"edgeVersion":"None","internetExplorer":false},"softwareSupport":[{"name":"Adobe Photoshop","logo":""},{"name":"ImageMagick","logo":"image-magic.webp"},{"name":"GIMP","logo":"gimp.svg"},{"name":"OpenJPEG","logo":""},{"name":"Kakadu Software","logo":""}],"conversion":{"convertTo":["jpeg","png","tiff","webp"],"convertFrom":["jpeg","png","tiff"]},"developer":{"httpHeaders":[{"header":"Content-Type","value":"image/jp2"}],"htmlAccept":"image/jp2, .jp2","fileDetection":["Check the first 12 bytes for the JP2 signature box (00 00 00 0C 6A 50 20 20 0D 0A 87 0A)"]},"prosCons":{"pros":["Superior compression efficiency over baseline JPEG without introducing blocking artifacts","True mathematically lossless compression available in the same format","Extremely scalable: a single file can be decoded at various resolutions (thumbnails to full size) without loading the entire file"],"cons":["Very poor native web browser support prevents it from being a web standard","High computational complexity makes encoding and decoding significantly slower than JPEG","Early patent concerns and complex licensing hindered its initial adoption rate"]},"specifications":{"url":"https://jpeg.org/jpeg2000/","rfc":"RFC 3745","mimeAliases":["image/jpeg2000","image/jpeg2000-image","image/x-jp2-codestream"]},"developerSnippets":{"python":"import magic\nprint(magic.from_file('image.jp2', mime=True)) # Outputs 'image/jp2'","nodejs":"const FileType = require('file-type');\nconst type = await FileType.fromFile('image.jp2');\nconsole.log(type.mime); // image/jp2","go":"import \"net/http\"\n// Standard HTTP detection may miss JP2; fallback to custom byte slice matching for the 12-byte signature box.","php":"$mime = mime_content_type('image.jp2');\necho $mime; // image/jp2"},"relatedFormats":["jpeg","hej2k","tiff"]}