Use compression

Some FTP servers support so-called Mode Z, i.e. ZLib compression of the data. If this mode is supported, of ModeZSupported property of TElSimpleFTPSClient class contains True after login to the server.

To enable use of compression, you need to set ModeZ property of TElSimpleFTPSClient class to true. To adjust ZLib compression level, you can set ModeZLevel property.

In addition to FTP compression, TElSimpleFTPSClient supports TLS compression (where supported by the server). To control TLS compression, see the corresponding how-to article.