... The Attach screen lets you browse for a file, add a comment, and upload it. ... Any type of file can be uploaded. ... In case you make some changes to the local file and want to upload it, again you can copy the previous upload path into the Local file field. ... It's not recommended to upload files greater than a few hundred K through a browser. Large files can be extremely slow-loading, and often time out. Use FTP for large file uploads. ... Use an FTP site for large file uploads. ...