When I open a PDF, does this mean that the document contains an interactive form area?

"This document contains interactive form area" means that there is a data structure called AcroForm in the structure of this pdf document, which enables the pdf to do some functions similar to filling in forms with the support of application programs. Such as orders, tax bills, statements, medical records, etc. You can use this function to realize paperless office.

Extension:

First, the method of using foxit Reader to delete the form area:

1。 There is a horizontal bar with a "highlighted field" at the top of the pdf page. Remove the tick. The content should be revealed; Or the highlighter tool behind "Highlight Field", drop down the triangle dialog box to make the highlighted field transparent or display the content.

2。 Or delete it with foxit phantom.

Second, the introduction of static pdf forms and dynamic pdf forms:

PDF forms are divided into two categories: static PDF forms and interactive PDF forms. The so-called static PDF form is a traditional PDF document without any interactive elements. This form consists of static elements such as text, points, lines and graphics. Such as product manuals, announcements of listed companies, scanned versions of martial arts novels, etc. , all belong to static PDF forms. Generally speaking, the main function of a static PDF form is to provide readers with corresponding information, and its content will not be modified.

Another kind of PDF form is interactive PDF form, which provides some optional controls, such as buttons, edit boxes, drop-down boxes, lists and so on. , for users to choose or fill in. Interactive PDF forms not only provide users with some information, but also require users to provide some information through editing, selection and other operations to achieve the purpose of interaction.

Interactive PDF forms are also divided into two types:

The first one, called AcroForm, was introduced in the PDF specification 1.2. The form is a set of fields that collect information from users interactively. The content and attributes of an interactive form are defined by an interactive form dictionary, which is quoted from the AcroForm entry of the document category of a PDF file.

The second is called XML Form Architecture (XFA). As the name implies, it is an XML Forms Architecture(XFA) form embedded with dynamic XML. XFA provides a template-based grammar and processing rule set, allowing users to build interactive forms. Template-based syntax will define the fields where users provide data. The openness of XFA will provide a common XML syntax for describing interactive forms, which is the common basis for performing form-related interactive operations between form processing applications. This openness means that XFA will be applied to various businesses.

Compared with static PDF forms, interactive XFA forms provide many functions:

Workflow: These forms include data representation, data capture and data editing. XFA, as a front-end application, submits data to the background server; It can also be used for printing purposes. Typical applications such as LiveCycle Workflow application of Adobe company.

Dynamic interaction: Dynamic functions range from interactive editable forms with dynamic calculation and verification to forms generated by servers and filled by machines.

Dynamic layout: Forms can automatically adjust themselves to the data provided by users or external data sources (such as database servers). For example, the data retrieved from the server has 100 lines, but the form has only 30 lines at the beginning of design. When importing data, if it is a traditional form, only the first 30 lines of data will be received, and the subsequent data will be discarded; Dynamic XFA forms are different. It automatically adjusts the form according to the data source, so the dynamic form will receive and display all 100 rows of data.