{"success":true,"data":{"ext":"jfif","name":"JPEG/JFIF graphics file","description":"JPEG/JFIF (JPEG File Interchange Format) is a raster image file format defined by the JFIF specification from C-Cube Microsystems and used with the JPEG standard for exchanging compressed images. It is commonly used for photographs, web graphics, digital cameras, and image storage across operating systems and applications. The format is generally safe, though JPEG decoders have occasionally been affected by parser vulnerabilities; files from untrusted sources should still be handled with updated software.","mime":["image/jpeg"],"risk_level":"Safe","signatures":[{"hex":"FF D8 FF","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"}]},{"hex":"FF D8 FF E0 4A 46 49 46 00","offset":0,"sources":[{"name":"Gary Kessler","url":"https://www.garykessler.net/library/file_sigs_GCK_latest.html"}]}],"related":["jpe","jpeg","jfi","jif","jpg"],"usage":{"python":"def is_jfif(file_path: str) -> bool:\n    \"\"\"Check if file is a valid JFIF by magic bytes.\"\"\"\n    signature = bytes([0xFF, 0xD8, 0xFF])\n    with open(file_path, \"rb\") as f:\n        return f.read(3) == signature","node":"function isJFIF(buffer: Buffer): boolean {\n  const signature = Buffer.from([0xFF, 0xD8, 0xFF]);\n  return buffer.subarray(0, 3).equals(signature);\n}","go":"func IsJFIF(data []byte) bool {\n    signature := []byte{0xFF, 0xD8, 0xFF}\n    if len(data) < 3 {\n        return false\n    }\n    return bytes.Equal(data[:3], signature)\n}"},"category":"Images"}}