    <SEC-DOCUMENT>0001628280-24-016036-index.html : 20240412
    <SEC-HEADER>0001628280-24-016036.hdr.sgml : 20240412
    <ACCEPTANCE-DATETIME>20240412160348
    ACCESSION NUMBER:		0001628280-24-016036
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20231231
    FILED AS OF DATE:		20240412
    DATE AS OF CHANGE:		20240412
    EFFECTIVENESS DATE:		20240412

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Proto Labs Inc
    		CENTRAL INDEX KEY:			0001443669
    		STANDARD INDUSTRIAL CLASSIFICATION:	FABRICATED STRUCTURAL METAL PRODUCTS [3440]
    		ORGANIZATION NAME:           	04 Manufacturing
    		IRS NUMBER:				000000000
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35435
    		FILM NUMBER:		24841411

    	BUSINESS ADDRESS:
    		STREET 1:		5540 Pioneer Creek
    		CITY:			Maple Plain
    		STATE:			MN
    		ZIP:			55359
    		BUSINESS PHONE:		763-479-7474

    	MAIL ADDRESS:
    		STREET 1:		5540 Pioneer Creek
    		CITY:			Maple Plain
    		STATE:			MN
    		ZIP:			55359
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>prlb_2023annualreport.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: prlb_2023annualreport.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>