    <SEC-DOCUMENT>0001437749-19-021079-index.html : 20191031
    <SEC-HEADER>0001437749-19-021079.hdr.sgml : 20191031
    <ACCEPTANCE-DATETIME>20191031165152
    ACCESSION NUMBER:		0001437749-19-021079
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20191031
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20191031
    DATE AS OF CHANGE:		20191031

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			PDF SOLUTIONS INC
    		CENTRAL INDEX KEY:			0001120914
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
    		IRS NUMBER:				251701361
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-31311
    		FILM NUMBER:		191184269

    	BUSINESS ADDRESS:
    		STREET 1:		2858 DE LA CRUZ BOULEVARD
    		CITY:			SANTA CLARA
    		STATE:			CA
    		ZIP:			95050
    		BUSINESS PHONE:		4082807900

    	MAIL ADDRESS:
    		STREET 1:		2858 DE LA CRUZ BOULEVARD
    		CITY:			SANTA CLARA
    		STATE:			CA
    		ZIP:			95050
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>pdfs20191031_8k.htm
    <DESCRIPTION>FORM 8-K
    <TEXT>
    Document 1 - file: pdfs20191031_8k.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>ex_162328.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: ex_162328.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>ex_162329.htm
    <DESCRIPTION>EXHIBIT 99.2
    <TEXT>
    Document 3 - file: ex_162329.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>a01.jpg
    <TEXT>
    Document 4 - file: a01.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>a02.jpg
    <TEXT>
    Document 5 - file: a02.jpg

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    <SEQUENCE>6
    <FILENAME>a03.jpg
    <TEXT>
    Document 6 - file: a03.jpg

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    <SEQUENCE>7
    <FILENAME>a04.jpg
    <TEXT>
    Document 7 - file: a04.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>a05.jpg
    <TEXT>
    Document 8 - file: a05.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>a06.jpg
    <TEXT>
    Document 9 - file: a06.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>a07.jpg
    <TEXT>
    Document 10 - file: a07.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>a08.jpg
    <TEXT>
    Document 11 - file: a08.jpg

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