{"success":true,"data":{"ext":"jpm","name":"JPM","description":"JPEG 2000 Part 6 (JPM) is an ISO/IEC image file format for storing one or more JPEG 2000 codestreams, maintained by the Joint Photographic Experts Group (JPEG) and standardized by ISO/IEC. It is used for compound documents, scanned page archives, medical imaging, and other workflows that combine multiple images and associated metadata in a single file. JPM is a legacy format with limited support in modern software, but it is generally safe to open when handled by trusted image readers.","mime":["image/jpm"],"risk_level":"Safe","signatures":[{"hex":"00 00 00 0C 6A 50 20 20 0D 0A 87 0A","offset":0,"sources":[{"name":"Apache Tika","url":"https://raw.githubusercontent.com/apache/tika/main/tika-core/src/main/resources/org/apache/tika/mime/tika-mimetypes.xml"},{"name":"Wikipedia","url":"https://en.wikipedia.org/wiki/List_of_file_signatures"}]}],"related":["jpgm","jp2","jpf","jxl","j2k","jpc"],"usage":{"python":"def is_jpm(file_path: str) -> bool:\n    \"\"\"Check if file is a valid JPM by magic bytes.\"\"\"\n    signature = bytes([0x00, 0x00, 0x00, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A])\n    with open(file_path, \"rb\") as f:\n        return f.read(12) == signature","node":"function isJPM(buffer: Buffer): boolean {\n  const signature = Buffer.from([0x00, 0x00, 0x00, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A]);\n  return buffer.subarray(0, 12).equals(signature);\n}","go":"func IsJPM(data []byte) bool {\n    signature := []byte{0x00, 0x00, 0x00, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A}\n    if len(data) < 12 {\n        return false\n    }\n    return bytes.Equal(data[:12], signature)\n}"},"category":"Images"}}