Even though Cloudsfer does not restrict any sort of file types or size, some cloud storage services do.
Below is a list of known limitations and restrictions:







Service Folder Limitation File Limitation
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 Amazon S3
  • Folder name cannot be “.” Or “..”
  • Folder name cannot contain the invalid character /
  • Folder name cannot end with the invalid character “.”
  • Folder name cannot be empty
  • File name cannot be “.” “..” or /
  • File name cannot contain the invalid character /
  • File name cannot end with the invalid character “.”
  • File name cannot be empty
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Azure Blob Storage
  • Cannot create empty folders - Empty Folders will receive a file named “$”
  • Folders name should consist only of lower case letters
  • Folders name should consist only of lower case letters
  • Folder name cannot be empty – untitled
  • Folder name cannot contain the invalid characters / and \
  • Folder cannot end with the invalid character “.”
  • File cannot end with the invalid character “.” 
  • File name cannot contain the invalid characters / and \
  • File name cannot be empty – untitled
W4TsBsyQtSjmV5OUls1N3VbKwhEqjISDUw.png

Box
  • Folder name cannot contain the invalid characters / and \
  • Invalid folder name:  “.” “..”
  • Folder name cannot end with space
  • Folder name cannot be empty
  • Folder name is limited to 255 characters
  • File name cannot contain the invalid characters / \ and "
  • File cannot be named as “.” “..”  \  " and  -
  • File name cannot be empty
  • File name is limited to 250 characters
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Dropbox
  • Folder name cannot contain the invalid characters / and \
  • Invalid folder name:  “.” “..”
  • Folder name cannot be empty
  • Folder name is limited to 255 characters
  • File name cannot contain the invalid characters / and \
  • File name cannot start with “~$”
  • TMP file cannot start with the invalid character ~  (Example: ~file.tmp)
  • Ignored files:
    .dropbox.attr
    .dropbox
    .ds_store
    desktop.ini
    thumbs.db
  • File name cannot be empty
  • File name is limited to 255 characters
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Flickr
 
  • Cannot upload videos over 1 GB
  • Cannot upload photos over 200 MB
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FTP
  • Folder cannot contain the invalid characters * / \  " < >? |  :  ;
  • Folder name cannot start with the invalid character “.”
  • Folder name cannot end with the invalid character “.”
  • Folder name cannot be empty
  • File cannot contain the invalid characters * / \ " < > ? |
  • File name cannot start\end with the invalid character “.”
  • File name cannot be empty
wy4GFtMIfFBBUagwjIjKsIFFng7e6CEGxA.png

Mega
  • Folder name cannot be empty
  • Folder name cannot contain the invalid characters /and \
  • File name cannot be empty
  • File name cannot contain the invalid characters / and \
dzm3mHfDn-VvFtPAlGJL5NBqXNZ9ze752A.png

OneDrive
  • Cannot contain the following characters ? / \ < > | " : *
  • Folder name cannot start with space or the invalid character “.”
  • Folder name not allowed: "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9", "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9", "PRN", "AUX", "NUL", "CON"
  • Folder name is limited to 400 characters
  • Folder name cannot be empty - untitled
  • Cannot upload files with no size (zero files)
  • File name cannot start with space
  • Files cannot have the following extensions:
    ".ashx", ".asmx", ".asp", ".aspq", ".axd", ".cshtm", ".chtml", ".json", ".rem", ".shtm", ".shtml", ".soap", ".stm", ".svc", ".vbhtm", ".vbhtml", ".xamlx"
wi6EeApEQZSGzCw7hoWY-80OvKxC76045w.png

OneDrive For Business
  • Folder name cannot end with space and the invalid character “.”
  • Folder names cannot end with:
    ".files", "_files", "_Dateien", "_fichiers", "_bestanden", "_file", "_archivos", "_filer", "_tiedostot", "_pliki", "_soubory", "_elemei", "_ficheiros", "_arquivos", "_dosyalar", "_datoteke", "_fitxers", "_failid", "_fails", "_bylos", "_fajlovi", "_fitxategiak"
  • Folder name cannot contain the invalid characters / \ : * ? " < > | # %
  • Folder name is limited to 400 characters
  • Folder name cannot start with space
  • Folder name cannot be empty - untitled

  • Files cannot have the following extensions:
    ".ascx", ".soap", ".asmx", ".svc", ".aspx", ".xamlx", ".htc", ".files", ".jar", ".one", ".master", ".onepkg", ".swf", ".onetoc", ".xap", ".onetoc2", ".laccdb", ".xsf", ".tmp", ".ashx", ".tpm", ".json"
  • File name cannot start with space
  • File name cannot end with the invalid character “.”
  • File name cannot contain the following invalid characters / \ : * ? " > < | # %
  • File names not allowed:
    "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9", "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9", "PRN", "AUX", "NUL", "CON", "forms", "~", "_vti_"
  • File name cannot contain “..”
  • File name is limited to 400 characters
  • File name cannot be empty
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Picasa
  • Album cannot contain over 2000 photos
  • Album name cannot be empty
  • Cannot upload files over 100 MB
  • File name cannot be empty
  • File name cannot conatin the following invalid characters < > | " 
  • Supported formats:
    • Image:
    .jpeg, .jpg, .tif, .tiff, .bmp, .gif, .psd, .png, .tga, .DNG, .CRW, .CR2, .RAW, .RAF, .3FR, .DCR, .KDC, .MRW, .NEF, .NRW, .ORF, .RW2, .PEF, .X3F, .ARW, .SRF, .SR2
    • Video:
    .mpg, .mpeg, .mod, .mmv, .tod, .wmv, .asf, .avi, .divx, .mov, .m4v, .3gp, .3g2, .mp4, .m2t, .m2ts, .mts, .mkv
    • Audio:
    .wma, .mp3
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SharePoint Online
  • Folder name cannot end with space and the invalid character “.”
  • Folder cannot end with: ".files", "_files", "_Dateien", "_fichiers", "_bestanden", "_file", "_archivos", "_filer", "_tiedostot", "_pliki", "_soubory", "_elemei", "_ficheiros", "_arquivos", "_dosyalar", "_datoteke", "_fitxers", "_failid", "_fails", "_bylos", "_fajlovi", "_fitxategiak"
  • Folder name cannot contain the invalid characters / \ : * ? " < > | # %
  • Folder name is limited to 400 characters
  • Folder name cannot start with space
  • Folder name cannot be empty - untitled
  • Cannot upload files over 2 GB
  • Files cannot have the following extensions:
    ".ascx", ".soap", ".asmx", ".svc", ".aspx", ".xamlx", ".htc", ".files", ".jar", ".one", ".master", ".onepkg", ".swf", ".onetoc", ".xap", ".onetoc2", ".laccdb", ".xsf", ".tmp", ".ashx", ".tpm", ".json"
  • File name cannot start with space
  • File name cannot end with the invalid character “.”
  • File name cannot contain the following invalid characters / \ : * ? " > < | # %
  • File names not allowed:
    "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9", "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9", "PRN", "AUX", "NUL", "CON", "forms", "~", "_vti_"
  • File name cannot contain “..”
  • File name is limited to 400 characters
  • File name cannot be empty
OptyVDTODYRIqvO6ibx-mEYG26SjR39iHg.png

WebDAV
  • Folder cannot contain the following characters ? / \ < > | " : * ;
  • Folder name cannot start or end with the invalid character “.”
  • Folder name is limited to 255 characters
  • Folder name cannot be empty - untitled
  • File cannot contain the following characters ? / \ < > | " * 
  • File name cannot start or end with the invalid character “.”
  • File name is limited to 255 characters
  • File name cannot be empty - untitled

 

If you need any further assistance, please feel free to contact us at support@cloudsfer.com