mime_maps = {
  "image": {
    "jpg":  { "ext": ".jpg", "mimes": ["image/jpeg", "image/jpg"] },
    "png":  { "ext": ".png", "mimes": ["image/png"] },
    "gif":  { "ext": ".gif", "mimes": ["image/gif"] },
    "webp": { "ext": ".webp", "mimes": ["image/webp"] },
    "avif": { "ext": ".avif", "mimes": ["image/avif"] },
    "jxl":  { "ext": ".jxl", "mimes": ["image/jxl"] },
    "bmp":  { "ext": ".bmp", "mimes": ["image/bmp"] },
    "heic": { "ext": ".heic", "mimes": ["image/heic"] },
    "heif": { "ext": ".heif", "mimes": ["image/heif"] },
    "ico":  { "ext": ".ico", "mimes": ["image/x-icon", "image/vnd.microsoft.icon"] },
    "qoi":  { "ext": ".qoi", "mimes": ["image/qoi"] },
    "tiff": { "ext": ".tiff", "mimes": ["image/tiff", "image/x-tiff"] },
    "svg":  { "ext": ".svg", "mimes": ["image/svg+xml"] }
  },
  "image_sequence": {
    "apng":  { "ext": ".apng", "mimes": ["image/apng"], "sequence": True },
    "avifs": { "ext": ".avifs", "mimes": ["image/avif-sequence"], "sequence": True },
    "heics": { "ext": ".heics", "mimes": ["image/heic-sequence"], "sequence": True },
    "heifs": { "ext": ".heifs", "mimes": ["image/heif-sequence"], "sequence": True }
  },
  "video": {
    "mp4": { "ext": ".mp4", "mimes": ["video/mp4", "audio/mp4"] },
    "webm": { "ext": ".webm", "mimes": ["video/webm", "audio/webm"] },
    "mov":  { "ext": ".mov", "mimes": ["video/quicktime"] },
    "ogv":  { "ext": ".ogv", "mimes": ["video/ogg"] },
    "mpeg": { "ext": ".mpeg", "mimes": ["video/mpeg"] },
    "avi":  { "ext": ".avi", "mimes": ["video/x-msvideo", "video/avi"] },
    "flv":  { "ext": ".flv", "mimes": ["video/x-flv"] },
    "mkv":  { "ext": ".mkv", "mimes": ["video/x-matroska", "application/x-matroska"], "audio_only_ext": ".mka" },
    "wmv":  { "ext": ".wmv", "mimes": ["video/x-ms-wmv"] },
    "rv":   { "ext": ".rv",  "mimes": ["video/vnd.rn-realvideo"] }
  },
  "audio": {
    "mp3":  { "ext": ".mp3", "mimes": ["audio/mpeg", "audio/mp3"] },
    "m4a":  { "ext": ".m4a", "mimes": ["audio/mp4", "audio/x-m4a"] },
    "ogg":  { "ext": ".ogg", "mimes": ["audio/ogg"] },
    "flac": { "ext": ".flac", "mimes": ["audio/flac"] },
    "wav":  { "ext": ".wav", "mimes": ["audio/wav", "audio/x-wav", "audio/vnd.wave"] },
    "wma":  { "ext": ".wma", "mimes": ["audio/x-ms-wma"] },
    "tta":  { "ext": ".tta", "mimes": ["audio/x-tta"] },
    "wv":   { "ext": ".wv",  "mimes": ["audio/x-wavpack", "audio/wavpack"] },
    "mka":  { "ext": ".mka", "mimes": ["audio/x-matroska", "video/x-matroska"] }
  },
  "document": {
    "pdf":  { "ext": ".pdf", "mimes": ["application/pdf"] },
    "epub": { "ext": ".epub", "mimes": ["application/epub+zip"] },
    "djvu": { "ext": ".djvu", "mimes": ["application/vnd.djvu"] },
    "rtf":  { "ext": ".rtf", "mimes": ["application/rtf"] },
    "docx": { "ext": ".docx", "mimes": ["application/vnd.openxmlformats-officedocument.wordprocessingml.document"] },
    "xlsx": { "ext": ".xlsx", "mimes": ["application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"] },
    "pptx": { "ext": ".pptx", "mimes": ["application/vnd.openxmlformats-officedocument.presentationml.presentation"] },
    "doc":  { "ext": ".doc", "mimes": ["application/msword"] },
    "xls":  { "ext": ".xls", "mimes": ["application/vnd.ms-excel"] },
    "ppt":  { "ext": ".ppt", "mimes": ["application/vnd.ms-powerpoint"] }
  },
  "archive": {
    "zip":  { "ext": ".zip", "mimes": ["application/zip"] },
    "7z":   { "ext": ".7z",  "mimes": ["application/x-7z-compressed"] },
    "rar":  { "ext": ".rar", "mimes": ["application/x-rar-compressed", "application/vnd.rar"] },
    "gz":   { "ext": ".gz",  "mimes": ["application/gzip", "application/x-gzip"] },
    "tar":  { "ext": ".tar", "mimes": ["application/x-tar"] },
    "cbz":  { "ext": ".cbz", "mimes": ["application/zip"], "note": "zip archive of images; prefer extension-based detection for comics" }
  },
  "project": {
    "clip":      { "ext": ".clip", "mimes": ["application/clip"] },
    "kra":       { "ext": ".kra",  "mimes": ["application/x-krita"] },
    "procreate": { "ext": ".procreate", "mimes": ["application/x-procreate"] },
    "psd":       { "ext": ".psd",  "mimes": ["image/vnd.adobe.photoshop"] },
    "swf":       { "ext": ".swf",  "mimes": ["application/x-shockwave-flash"] }
  },
  "other": {
    "octet-stream": { "ext": "", "mimes": ["application/octet-stream"] },
    "json":  { "ext": ".json",  "mimes": ["application/json"] },
    "xml":   { "ext": ".xml",   "mimes": ["application/xml", "text/xml"] },
    "csv":   { "ext": ".csv",   "mimes": ["text/csv"] }
  }
}