An interactive PDF form is a document whose fields (text, checkboxes, dropdown lists, radio buttons) can be filled out directly on the screen, without printing or handwriting. The creation of these forms relies on applications with very different approaches, and the choice of tool influences both the ease of design and the compatibility of the final file with PDF readers on the market.
XFA and JavaScript Compatibility: The Trap That Comparisons Ignore
Before choosing an application, it is essential to understand a technical issue that makes certain forms unusable depending on the reading context. Two technologies coexist in interactive PDFs: AcroForms (the historical standard) and XFA forms, which are richer but significantly less supported.
PDF readers integrated into browsers, particularly Microsoft Edge, do not support XFA forms or those based on JavaScript. A document designed in Adobe Acrobat with validation scripts may therefore work perfectly in Acrobat while displaying a blank page or an error message in a browser or on a mobile device.
This discrepancy has direct consequences. If your recipients open the PDF in their default browser (which most users do), an XFA form simply will not be fillable. Among the best applications for creating fillable PDF forms, some produce exclusively AcroForms, ensuring broad compatibility. Checking this point before committing avoids hours of reformatting.
PDF Forms and Accessibility: What the PDF/UA-2 Standard Changes
The PDF/UA-2 standard, published in 2024, defines a specific technical framework for PDF 2.0 documents. It specifies requirements for structure, reading order, text alternatives, and form field tagging. For an interactive form creator, this standard is not an abstract regulatory detail: it determines whether a document will be readable by assistive technology (screen readers, keyboard navigation).
Since June 28, 2025, the European Accessibility Act strengthens accessibility obligations for documents and digital services within the European Union. A PDF form distributed by a concerned company must meet a set of specific criteria:
- Each form field has an explicit label, readable by assistive technologies, not just a visual text placed next to the field
- The tab order follows the visual logic of the document, so that a keyboard-navigating user fills out the fields in the correct order
- Structure tags (paragraphs, headings, lists) are present in the PDF, not just in the source file
Not all applications handle these elements in the same way. PDFelement and Adobe Acrobat offer built-in accessibility checking tools. Online solutions like JotForm produce web forms that can be converted to PDF, but the exported PDF file often loses the accessibility tagging generated on the web side.
Creating PDF Form Fields: Local or Online Approach
PDF form creation applications are divided into two families with distinct logics.
Installed Software
Adobe Acrobat remains the benchmark for creating complex forms. Its automatic field recognition function detects input areas in a static PDF and converts them into interactive fields. PDFelement offers a comparable approach, with an interface often considered more accessible for occasional users.
LibreOffice allows you to prepare a layout with form fields and then export the document as an interactive PDF. This method is suitable for simple forms (a few text fields, checkboxes), but validation and automatic calculation options remain limited compared to Acrobat.
Online Tools and Hybrid Forms
JotForm, among other online services, allows you to design forms directly in a browser and then export them as PDF. The advantage is the speed of setup and the absence of installation. The downside is twofold: the generated PDF is often a static rendering of the web form, and the collected data passes through the provider’s servers, raising the issue of data security for sensitive documents.
The choice between these two approaches depends on the volume of forms to be produced, the complexity of the expected fields, and the level of control required over the final file.
Technical Criteria for Choosing a PDF Form Application
Rather than a list of marketing features, three technical criteria can reliably differentiate the tools.
- Output format (AcroForm or XFA): an AcroForm will be readable in almost all PDF readers. An XFA form will only work in Adobe Acrobat or Adobe Reader
- Accessibility management: does the application allow adding labels to fields, defining a tab order, and exporting a tagged PDF compliant with PDF/UA?
- Field validation options: some applications allow input rules (date format, required field, automatic calculations between fields), while others are limited to free text fields without control
A form intended for internal use with Acrobat installed on all workstations allows for more technical latitude. A form distributed to the general public, opened in various environments, requires a simple AcroForm format and rigorous accessibility tagging.
The choice of creation application determines the quality of the produced file well beyond its visual appearance. A form that does not open correctly for its recipient is of no use, regardless of the sophistication of its layout. Starting from the output format and reading constraints, rather than the design interface, remains the most reliable method for selecting the appropriate tool.
