{"id":"image-vnd-sealedmedia-softseal-jpg","mimeType":"image/vnd.sealedmedia.softseal.jpg","name":"SealedMedia SoftSeal JPEG","shortName":"SoftSeal-JPEG","category":"Security \u0026 DRM","extensions":[".sjpg",".sealed-jpg",".sealed-jpeg"],"description":"The image/vnd.sealedmedia.softseal.jpg MIME type represents a Joint Photographic Experts Group (JPEG) image that has been encrypted and wrapped inside the proprietary SoftSeal Digital Rights Management (DRM) container developed by SealedMedia. Much like its GIF and PNG counterparts, this format was used in enterprise environments to apply persistent Information Rights Management (IRM) to sensitive photographs and documents. SealedMedia was acquired by Oracle in 2006, and the technology was folded into the Oracle IRM product suite.","seo":{"title":"image/vnd.sealedmedia.softseal.jpg MIME Type | Developer Reference","description":"Complete reference for the image/vnd.sealedmedia.softseal.jpg MIME type: SealedMedia SoftSeal DRM, encrypted JPEG payloads, and enterprise file security.","faqs":[{"question":"What is a SoftSeal JPEG (.sjpg)?","answer":"A SoftSeal JPEG is a standard JPEG image cryptographically protected by SealedMedia's enterprise DRM software. It cannot be opened without authenticating against a central corporate licensing server that verifies the user's viewing permissions."},{"question":"How do I open an image/vnd.sealedmedia.softseal.jpg file?","answer":"Standard image viewers and web browsers cannot read this format. Opening it requires specialized client software, such as the Oracle IRM Desktop or legacy SealedMedia Unsealer, alongside authorized user credentials."},{"question":"Can I convert a SoftSeal JPEG back into a normal JPEG?","answer":"Only if you have the proper credentials. You must first open the file in the authenticated Oracle IRM client. If the document owner granted you 'export' or 'copy' permissions, the software will allow you to save the unencrypted JPEG payload."}]},"index":{"compression":["Encrypted Payload (DCT)"],"browserSupport":{"score":1,"label":"None"},"commonUses":["Enterprise Information Rights Management (IRM)","Secure Distribution of Sensitive Photography","Revocable Corporate Document Access"]},"technical":{"magicBytes":{"hex":"Unknown (Proprietary SealedMedia Container)","ascii":"Unknown"},"container":"SealedMedia SoftSeal Wrapper","compressionAlgorithm":["AES Encryption","Discrete Cosine Transform (Internal JPEG payload)"],"colorDepth":["Encrypted Payload (Historically 24-bit RGB)"],"transparency":false,"animation":false,"metadata":{"exif":false,"xmp":false,"iccProfile":false},"alphaChannel":false,"progressiveLoading":false,"hdrSupport":false},"history":{"developer":"SealedMedia (Acquired by Oracle Corporation)","released":"Late 1990s","specification":"Proprietary (Registered with IANA)"},"browserSupport":{"chrome":false,"chromeVersion":"None","firefox":false,"firefoxVersion":"None","safari":false,"safariVersion":"None","edge":false,"edgeVersion":"None","internetExplorer":false},"softwareSupport":[{"name":"Oracle IRM Desktop","logo":""},{"name":"SealedMedia Unsealer (Legacy)","logo":""}],"conversion":{"convertTo":["jpeg"],"convertFrom":[]},"developer":{"httpHeaders":[{"header":"Content-Type","value":"image/vnd.sealedmedia.softseal.jpg"}],"htmlAccept":"None","fileDetection":["Standard file sniffers lack magic byte definitions for the proprietary SoftSeal container wrapper.","Identification relies entirely on the HTTP Content-Type headers generated by the DRM distribution server or string matching legacy file extensions (.sjpg)."]},"prosCons":{"pros":["Offered persistent document security; if a sensitive photo was emailed outside the company, it remained encrypted and unviewable without server authentication","Administrators possessed the ability to remotely revoke viewing rights to a specific image globally at any time"],"cons":["Completely proprietary and relies on a central authentication server; if the server goes offline or the product is deprecated, the image is permanently inaccessible","Zero support in modern operating systems, web browsers, or standard image editing suites without heavy enterprise client installations","Oracle effectively discontinued the IRM product line, stranding many legacy sealed documents"]},"specifications":{"url":"https://www.iana.org/assignments/media-types/image/vnd.sealedmedia.softseal.jpg","rfc":"","mimeAliases":["image/vnd.sealed.jpg","image/vnd.sealed.jpeg"]},"developerSnippets":{"python":"import magic\n# Libmagic lacks definitions for the proprietary SoftSeal container. It will likely identify the file as 'application/octet-stream'.\nprint(magic.from_file('secure_photo.sjpg', mime=True))","nodejs":"const mime = require('mime');\n// Standard JS MIME libraries map this purely based on historical IANA registry associations if the extension is recognized\nconsole.log(mime.getType('secure_photo.sjpg')); // May output 'image/vnd.sealedmedia.softseal.jpg' depending on the dictionary","go":"import \"net/http\"\n// The standard net/http library cannot detect sealed files internally via byte sniffing. You must rely on extension string matching.","php":"$mime = mime_content_type('secure_photo.sjpg');\necho $mime; // Standard server environments will map this to application/octet-stream"},"relatedFormats":["jpeg","vnd.sealed.png","vnd.sealedmedia.softseal.gif"]}