What Is an AcroForm? How to Fill Out PDF Forms Correctly
Question details
The user wants to understand what an AcroForm is and how to properly fill out an interactive PDF form, especially when dealing with job applications that malfunction in certain preview apps.

- Product
- PDF Forms
- Device & OS
- iOS, Android, macOS, Windows
- Scenario
- Attempting to fill out an interactive PDF form, such as a job application, downloaded from cloud services like Box.
- Observed behavior
- Form data, comments, and interactive fields do not display correctly when viewed in cloud previewers or unsupported mobile PDF applications.
Ensure you have downloaded the PDF file to your local device, as viewing interactive forms in web browsers or cloud storage previews often disables fillable fields.
Download the File and Open in a Dedicated PDF Reader
Bypass web previews and cloud viewers by downloading the form and using a supported PDF application to access the interactive fields properly.
AcroForms are standard interactive PDF forms created with Adobe Acrobat. Many web previewers (like Box) and basic mobile viewers cannot render these interactive fields correctly.
Download the PDF file directly from the cloud service or email to your local computer or mobile device storage.
Launch a dedicated PDF application, such as WPS Office or Adobe Acrobat Reader. Use the 'File' > 'Open' menu to locate and open your downloaded form.
Look for interactive form fields, which are typically highlighted in light blue. Click or tap directly into these fields to type your information.
Once all information is entered, use 'File' > 'Save As' to create a new copy of your completed form before sending it.

Verify Form Type and Update Software
Ensure your PDF application is up to date and confirm that the file is an AcroForm rather than an incompatible XFA form.
Easily Fill Out and Save PDF Forms with WPS Office
WPS Office provides a powerful, lightweight PDF toolkit that fully supports AcroForms. You can easily fill out, sign, and save interactive PDF forms on desktop and mobile devices without compatibility issues.
- 1. Open WPS Office: Launch WPS Office on your computer or mobile device and click on the 'PDF' tab.
- 2. Open the form: Click 'Open' to select and load the interactive PDF form you downloaded to your device.
- 3. Fill out the fields: Click into the highlighted interactive fields to easily type your details into the form.
- 4. Sign if required: Navigate to the 'Fill & Sign' or 'Insert' tab to create and place your personal signature on the document.
- 5. Save the document: Click the 'Save' icon or press Ctrl+S to securely save your inputted data directly to the PDF file.

Frequently Asked Questions
What is the difference between an AcroForm and an XFA form?
An AcroForm is a standard interactive PDF form created with Adobe Acrobat and is widely supported by most PDF readers across different platforms. An XFA form is an XML-based form created with Adobe LiveCycle Designer; it is more complex and typically requires specific desktop PDF viewers, often malfunctioning on mobile apps.
Why are the PDF form fields not showing up on my mobile device?
Many default mobile previewers and cloud storage apps (like Box or Google Drive) do not support rendering interactive PDF form fields. To see and use these fields, you must download the file and open it in a dedicated PDF application.
How do I know if a PDF form is fillable?
When you open a fillable PDF form in a supported PDF reader, the interactive fields will typically be highlighted in a distinct color (often light blue). Additionally, your cursor will change to a text-input cursor when you hover over these fillable areas.




