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Aform filler is a software program that fills forms in aUI. Form fillers can be part of a larger program, like aweb browser, a web browser extension,password manager or even anenterprise single sign-on (E-SSO) solution.

A form filler is the opposite of ascreen scraper, which extracts data from a form.

Designed to completeHTML-based forms, such as login fields, shopping checkout pages, or online surveys like Google Forms. These are commonly built into web browsers, browser extensions, or password managers to streamline online data entry.^[1]

Specialized software for completingPDF forms. Government agencies, such as theIRS andState Department websites often refer to PDF-based documents simply as “forms.”^[2] Dedicated PDF form fillers can handle interactive fields, digital signatures, and validation requirements for official submissions.

• Enterprise single sign-on
• OpenID
• Password manager

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• IETF RFC 3106

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