User portrait image related settings in portal-ext.properties file :
# Set the maximum file size for user portraits. A value
# of 0 for the maximum file size can be used to indicate unlimited file
# size. However, the maximum file size allowed is set in the property
# "com.liferay.portal.upload.UploadServletRequestImpl.max.size".
#
users.image.max.size=307200
#
# Set the maximum user portrait height and width in pixels. A value of 0
# indicates no restictions on user portrait dimensions.
#
users.image.max.height=120
users.image.max.width=100
# Set the maximum file size for user portraits. A value
# of 0 for the maximum file size can be used to indicate unlimited file
# size. However, the maximum file size allowed is set in the property
# "com.liferay.portal.upload.UploadServletRequestImpl.max.size".
#
users.image.max.size=307200
#
# Set the maximum user portrait height and width in pixels. A value of 0
# indicates no restictions on user portrait dimensions.
#
users.image.max.height=120
users.image.max.width=100