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"/V" indicates a field value, "/T" is a field's title. Here's a sample (with extra whitespace to make it more readable): %FDF-1.2 #PDF FORM FILLER DATABASE PDF#Opening the FDF fills the PDF (via a file association with acrobat/reader). FDF files are fairly trivial to generate, and contain a pile of field/value pairs (and can hold list options, and other fancier stuff you won't need) and a file association. And that's a terrible spec document, it only covers a small (infrequently used, complicated) part of the FDF format. ToWriter( & model.1) FDF, Form Data Format. AcroForm field is no longer needed in the output. Generate a PdfWriter instance from existing PdfReader. The Rect field specifies the coordinates of the field. textFieldsDef is a list of text fields to add to the form. A textbox would have the value as a simple string and a choice field (dropdown) would have a selected string from a list of options. For example for a checkbox it can be true/false (representing checked/unchecked). The bounding box representing the field area denoted by a rectangle in PDF coordinates. The name often indicates what the field represents. Each field has a unique name so that it can be referenced directly. We just need to define the coordinates of the rectangles where the input field should be present and then let the annotator package of UniPDF take care of building the fields on your PDF document. To convert this into a fillable PDF form, we need to add some data to the PDF which indicates what fields are in the document, and where they are (i.e. This kind of PDF is purely flat, meaning that if you open it in a PDF viewer such as Adobe Reader or any web browser, you can only see the text, not insert any values. Figure 1: Simple PDF form template with visible fields Figure 1 shows the resulting PDF file, where key entries are on the left such as “Full Name” followed by a blank where the value is intended to be entered, etc. Let’s start by preparing a simple PDF file with MS Word with some fields and export it to PDF. Let’s look at what to do if we don’t have any form prepared. #PDF FORM FILLER DATABASE SOFTWARE#They might be created using Adobe Acrobat or prepared by your designer in more fancy design software and form fields added on top of that with Adobe Acrobat or other software. In many cases you will have your forms already prepared. Fill and flatten in one step as often required.Ĭreating a fillable PDF form on top of a simple template PDF file.Flatten a filled PDF and create an uneditable output PDF with no forms.Fill a PDF form programmatically via input data in JSON format.Create a fillable PDF form on top of a template PDF. ![]() In this article we will cover the following cases: This is one use case of how you can fill and flatten PDF forms to smoothen your business processes. #PDF FORM FILLER DATABASE ARCHIVE#You can now archive the PDFs for your records and email a copy to your customer, user or employee. The next step would be to flatten the PDF form to ensure the immutability of the information. Each application you could store for processing and then create a flattened copy which is essentially the form with the data filled out, but has been flattened where the values have been embedded into the content and become an uneditable part of the document. You might have applications downloadable as PDF forms from your website that users could fill in and send via email or collect the data through forms on your website. Thus by processing PDFs in Go gives you fantastic performance, cloud-native applications, and simplicity, much higher security compared to C-based applications. It is perfect for microservices and its blazing speed enables you to beat the rest of the class. Go is often called the language of the cloud (for good reason) and enables you to create powerful programs and deploy as a single independent binary for convenient deployment in minimal Docker containers or otherwise. PDF files that have been flattened and made uneditable. For example, you can collect data from your website and insert it into PDF forms by injecting values from JSON files to create everlasting PDFs, i.e. ![]() PDF forms are a convenient tool for gathering and storing information about your customers, users, or employees. ![]()
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