Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 14, 2017
Document And Entity Information
Entity Registrant Name	hopTo Inc.
Entity Central Index Key	0001021435
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		9,804,400
Trading Symbol	HPTO
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2017