Interactive PDF workflow
Work with PDF forms and visible signatures cautiously
A typed name, drawn mark, image signature, form field, and cryptographic signature are different objects. Decide whether you need a visible indication, an editable field, or verifiable signer identity before choosing a workflow.
Workflow
Inspect the original
Identify existing fields, scripts and signatures first. New text, checkbox, radio, dropdown and list fields can have required flags and default values; signed, encrypted and XFA files are refused.
Use an honest signing mode
Add a visible handwritten or image mark only when that meets the process; do not describe it as a certificate digital signature or identity verification.
Save, reopen, and submit a copy
Check every value and mark in the intended reader, flatten only when static appearance is required, and preserve the editable original until acceptance.
Limits to understand
Flattening can make fields non-editable and reduce accessibility. Rewriting may break calculations, unsupported widgets, scripts, or existing signatures. A visible mark alone does not prove identity, intent, timestamp, or document integrity.
Privacy mode
Local form and visible-signature workflows keep field values and marks in the browser for supported operations. The recipient, email service, synced folder, or submission portal will still receive the finished document when you send it.
Verify the result
Reopen in the intended viewer, tab through fields, change and save every type, and check radio exclusivity, multiple selections, required flags and default/reset values. Reader behavior varies; required flags are not server-side validation.
Frequently asked questions
Is a drawn signature a digital signature?
It is a visible electronic mark, not a certificate-based cryptographic signature that validates integrity and signer credentials.
Should I flatten a completed form?
Only if the recipient wants a static copy and you accept losing editability or semantics. Keep a verified editable source separately.