PDF Forms online — PDFWhirl

What PDF Forms does

PDF Forms matches supplied JSON keys to existing AcroForm field names, sets recognized values, and can flatten the form.

PDF Forms runs as a queued server job after the source upload completes. The generated artifact receives a separate download link, so the original device file remains unchanged.

How to use this tool

Prepare the source
Obtain the exact PDF field names and prepare valid JSON values without including unrelated personal data. This preparation matters specifically before using PDF Forms.
Upload and inspect
Select one PDF containing AcroForm fields plus a JSON field-name map, wait for the PDF Forms upload to finish, and confirm that the displayed source is the intended file.
Choose the available options
Set only the PDF Forms controls needed for this output and review required fields before starting the job.
Download and verify
Open every populated field, check checkboxes and long values, and retain an unflattened source when later editing is required. Keep the source until the PDF Forms result has passed that review.

Common use cases

Prepare a delivery copy

Use PDF Forms to create a separate copy for a recipient without overwriting the maintained source.

Correct one document workflow

Apply PDF Forms to a known document problem after confirming the operation matches the intended outcome.

Create a review candidate

Generate a PDF Forms result that can be checked before it enters a records, publishing, or sharing process.

Supported inputs

one PDF containing AcroForm fields plus a JSON field-name map
One PDF Forms job at a time through the current public workspace

Output

One filled PDF, optionally flattened so current values become page appearances.

Limitations to know

XFA forms, scripts, calculated fields, signatures, and unknown field names may not populate through this AcroForm workflow.
PDF Forms cannot reconstruct source information that is absent, damaged, or inaccessible in the uploaded document.
Viewer, font, image, form, signature, and accessibility behavior can change after PDF Forms; compare important output with the source.
No PDF Forms result should be treated as legal, archival, accessibility, or compliance certification without the required independent review.

Privacy and document handling

PDF Forms uploads the selected source to configured object storage so the worker can process it.
The worker attempts to remove temporary PDF Forms workspace files after the job, which is separate from stored input and output retention.
Avoid using PDF Forms with confidential material unless the published storage and retention information is suitable for the document.

Stored input and output objects are deleted automatically: files uploaded without an account are removed about 24 hours after upload, and files belonging to a signed-in account are removed after 7 days. A scheduled sweep enforces this hourly against the object store itself. Workers attempt to remove per-job temporary directories after processing. This does not delete stored input or output objects.

Read the Privacy Policy and Security page for verified implementation details and open questions.

Troubleshooting

PDF Forms cannot start

Confirm the expected one PDF containing AcroForm fields plus a JSON field-name map finished uploading and every required PDF Forms option contains a valid value.

PDF Forms reports a processing error

Open the source locally, remove unsupported encryption where authorized, and retry PDF Forms with a smaller valid file.

PDF Forms output is not suitable

Open every populated field, check checkboxes and long values, and retain an unflattened source when later editing is required. If it still differs, retain the source and use a workflow designed for that document feature.

Still stuck? Review Help and common questions or contact support.

Frequently asked questions

Does PDF Forms replace my original file?

No. PDF Forms creates a separate stored output and does not edit the source on your device.

Is every PDF Forms result guaranteed to look identical?

No. PDF Forms depends on the source structure and processing engine, so important pages and features must be checked.

Should I delete my source after PDF Forms?

No. Keep the source until the PDF Forms output has been opened, compared, and accepted for its intended use.

How should I check my PDF Forms result?

Open every PDF Forms download and compare it with the unchanged source before sharing or deleting anything. Pay particular attention to this documented limitation: XFA forms, scripts, calculated fields, signatures, and unknown field names may not populate through this AcroForm workflow.