{"id":14206,"date":"2021-09-20T21:46:03","date_gmt":"2021-09-20T19:46:03","guid":{"rendered":"https:\/\/dans.knaw.nl\/file-formats\/images-georeference\/jpeg-world-file\/"},"modified":"2021-09-20T21:46:05","modified_gmt":"2021-09-20T19:46:05","slug":"jpeg-world-file","status":"publish","type":"page","link":"https:\/\/dans.knaw.nl\/en\/file-formats\/images-georeference\/jpeg-world-file\/","title":{"rendered":"JPEG World File"},"content":{"rendered":"<p>The World file is a text file in which the geo-reference of a corresponding image is given. The coordinate system used is not in this text file, but in a corresponding file or in the image itself.<\/p>\n<p>The World specification was introduced by the commercial Esri. A World file can be opened in multiple applications, but compared to GeoTIFF, a World file has less support.<\/p>\n<p>Optional files with a World File:<\/p>\n<p>.prj: this is the usual extension for a file in which the coordinate system used (the projection) is given. If present, this is an essential file.<\/p>\n<p>.aux.xml: this &#8220;auxiliary&#8221; file may contain exclusive information that cannot be stored in the World file itself, but is necessary to display the image correctly, for example, information about color usage.<\/p>\n<p>.xml: in most cases, a .xml of the same name contains information that is also present in the main files. The XML is often created automatically when opening a World File in certain software. If an XML contains no additional information, this file is not relevant for preservation.<\/p>\n<p>.ovr or .rrd: these are optional &#8220;pyramid&#8221; files, with which a World file can be opened faster in the application in which it was created. This file is not relevant for preservation.<\/p>\n<p>TIFF World File is a non-preferred format for file type Images (georeference).&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The World file is a text file in which the geo-reference of a corresponding image is given. The coordinate system used is not in this text file, but in a corresponding file or in the image itself. The World specification was introduced by the commercial Esri. A World file can be opened in multiple applications, [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"parent":13088,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"class_list":["post-14206","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>File formats: JPEG World File | DANS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dans.knaw.nl\/en\/file-formats\/images-georeference\/jpeg-world-file\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"File formats: JPEG World File | DANS\" \/>\n<meta property=\"og:description\" content=\"The World file is a text file in which the geo-reference of a corresponding image is given. The coordinate system used is not in this text file, but in a corresponding file or in the image itself. The World specification was introduced by the commercial Esri. 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The coordinate system used is not in this text file, but in a corresponding file or in the image itself. The World specification was introduced by the commercial Esri. 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