Sign Secured PDF for Secure eSignatures and Compliance

Award-winning eSignature solution

What a sign secured PDF is

A sign secured PDF is a PDF document that is signed electronically and protected with controls that help preserve its integrity after signing. In practice, the signer reviews the file, applies an electronic signature, and the system records identity, time, and activity details in an audit trail. The signed PDF can then be checked for tampering, so recipients can see whether the document changed after signature. In U.S. workflows, this supports contract execution, approvals, and recordkeeping across desktop and mobile devices.

Why it matters legally

A sign secured PDF helps organizations capture consent, reduce paper handling, and keep a defensible record of the signing process. Under ESIGN and UETA, electronic signatures can be legally valid when intent, attribution, and record retention are handled properly.

Why teams look for DocuSign alternatives

Common sign secured PDF issues

Signer identity can be hard to verify when teams rely on weak authentication or shared inboxes.
Document edits after signing can break trust if tamper evidence and version control are missing.
Audit records may be incomplete when timestamps, IP data, or signer actions are not retained.
Regulated teams can miss retention or access-control requirements when signed PDFs are stored outside policy.

Legal teams

Legal teams use signed PDFs for contracts, releases, and approval records that need clear signer intent.

Operations and HR

Operations and HR teams use them for onboarding forms, policy acknowledgments, and internal approvals.

Typical users and roles

Xerox operations leaders use signNow with NetSuite to route the right signatures to the right documents. This fits finance, procurement, and back-office teams that need controlled approvals, reusable workflows, and consistent document formats across departments and locations.
Fertility Centers of Illinois leadership uses signNow for responsive patient-facing workflows and API-driven document handling. This suits healthcare teams that need secure intake, signed consent forms, and faster turnaround while keeping records organized for regulated care processes.

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Audit trail

Create a signed PDF with an audit trail that records signer activity, timestamps, and document history for later review.

Tamper evidence

Preserve document integrity after signing so later changes are easier to detect and investigate.

Mobile signing

Use mobile signing on iOS and Android so approvals can happen away from the office.

Signer verification

Apply signer authentication controls that support attribution and reduce uncertainty about who signed.

Templates

Reuse templates for recurring forms, contracts, and acknowledgments to cut repetitive setup work.

Status tracking

Track completion status so teams can see where a document is stalled and who still needs to sign.

Connected systems for signed PDFs

Connected systems move signed PDFs into the tools teams already use, so approvals, storage, and record updates stay in one workflow.

How the signing flow works

The signing flow follows a simple sequence from document review to sealed record retention.

Open document: The signer opens the PDF and reviews the document.
Verify signer: The system verifies identity before the signature is applied.
Apply signature: The signature is attached and the PDF is sealed.
Save record: The completed file is stored with its audit trail.

Quick setup steps

Use a short setup sequence to prepare, send, and store a signed PDF without extra manual steps.

Prepare the file:
Upload the PDF and place signature fields.
Set recipients:
Add recipients and set the signing order.
Configure delivery:
Choose authentication and reminder options.
Send for signing:
Send the document for signature.
Archive the file:
Download or store the completed PDF.

Setting	Recommendation
Authentication method	SMS OTP
Signature type	SES
Audit trail	Enable full history
Document retention	6 years (HIPAA 45 CFR 164.530(j)(2))
Encryption	TLS 1.2/1.3 and AES-256

Platform and device requirements

signNow works across major browsers and mobile operating systems, so teams can sign PDFs on desktop or mobile devices.

Desktop browsers Chrome, Firefox, Safari, and Edge
Operating systems Windows 11, macOS, iOS, Android
Mobile devices iPhone, iPad, and Android phones

For regulated workflows, managed devices, current browser versions, and stable network access help preserve access to audit trails, completed PDFs, and account controls.

Security and compliance controls

Transport encryption:

TLS 1.2/1.3 in transit

Storage encryption:

AES-256 at rest

Security reporting:

SOC 2 Type II available

Information security:

ISO 27001 certified

Healthcare compliance:

HIPAA support with BAA

U.S. legality:

ESIGN and UETA compliant

Xerox operations

A NetSuite operations leader needed the right signatures on the right documents across departments.

Kodi-Marie Evans, Director of NetSuite Operations at Xerox
Flexible routing matched document format and approval needs

The workflow reduced format mismatches and kept approvals aligned with business systems. For teams using ERP-connected signing, the main value is controlled routing, clearer accountability, and fewer manual handoffs between systems.

Healthcare intake

A healthcare founder needed responsive signing for patient-facing documents and API-based workflows.

John Butler, Founder at Fertility Centers of Illinois
API support helped organize secure document handling

The result was a more organized signing process for patient documents and internal coordination. In healthcare settings, the practical benefit is faster turnaround with records that remain easier to track, store, and review.

Best practices for signed PDFs

A careful setup improves attribution, recordkeeping, and day-to-day reliability without adding unnecessary complexity.

Match authentication to document risk

Use stronger authentication for contracts, healthcare forms, and other records where signer attribution matters. SMS OTP or ID verification can improve confidence compared with simple email delivery alone.

Retain the full record set

Keep the signed PDF, the audit trail, and any related consent records together in one retention policy. That makes later review easier and supports ESIGN, UETA, and HIPAA recordkeeping needs.

Restrict template and role changes

Limit who can edit templates, routing rules, and signer roles. Clear role-based access reduces accidental changes and helps preserve the integrity of repeatable workflows.

Pilot the workflow first

Test mobile signing, reminders, and export steps before rollout. A short pilot helps surface browser, device, or approval-order issues before they affect live documents.

Day 1:

Set up the account, templates, and signer roles.

Day 2:

Send the first PDF for signature.

Week 1:

Onboard the team and confirm routing rules.

7-day trial:

Free trial lasts 7 days, no credit card required.

HIPAA retention:

Keep signed PHI records 6 years under 45 CFR 164.530(j)(2).

ESIGN and UETA:

Electronic signatures remain legally valid when intent and attribution are preserved.

Business plan:

Annual billing starts at $8/user/month.

Enterprise rollout:

Advanced signer authentication is available on Enterprise.

Risks of poor signing controls

Weak attribution

Harder to prove signer intent.

Incomplete logs

Audit evidence may be challenged.

Retention failure

HIPAA records may be noncompliant.

Poor recordkeeping

Disputes can delay enforcement.

Signer authentication:

The system records the signer’s identity and authentication method.

Timestamp capture:

Each action receives a secure UTC timestamp.

Document hashing:

The PDF hash changes if the file is altered.

Tamper-evident sealing:

The completed file is sealed against later edits.

Audit review:

The audit trail can be reviewed after completion.

Export trail:

Records can be exported for evidence or retention.

signNow	DocuSign	Adobe Sign	PandaDoc
ESIGN and UETA	Yes	Yes	Yes
Audit trail	Yes	Yes	Yes
HIPAA support	Yes	Yes	Yes
Starting price	$8/user/mo	$15/user/mo	$14/user/mo
Envelope cap	No cap	100/year	Plan-based

	signNow	DocuSign	Adobe Sign	PandaDoc	HelloSign
Starting price	$8/user/mo	$15/user/mo	$14/user/mo	$19/user/mo	$15/user/mo
Free trial	7 days	Not verified	Not verified	Not verified	Not verified
Bulk send	Yes	Not verified	Not verified	Not verified	Not verified
Audit trail	Yes	Yes	Yes	Yes	Yes
Envelope cap	No cap	100/user/year	Not verified	Not verified	Not verified

28M+Documents signed

13+Years in business

4.6/5Average G2 rating

Troubleshooting and FAQs

These answers focus on plan limits, compliance requirements, and document handling issues that affect signed PDFs in U.S. workflows.

signNow Business includes legally binding eSignatures, audit trails, templates, mobile apps, ISO 27001, SOC 2, and GDPR support. If you need HIPAA handling, a BAA is required before signing PHI.

signNow Business Premium adds bulk send, while Enterprise adds advanced signer authentication and formula fields. If your workflow needs higher assurance or more routing control, those plan tiers fit better than entry-level use.

A missing audit trail usually means the document was not completed in the signing flow or the wrong file was exported. Completed signNow documents should include signer history, timestamps, and activity details for ESIGN and UETA evidence.

For healthcare records, HIPAA retention is 6 years from the date of creation or last effective date, whichever is later, under 45 CFR 164.530(j)(2). Keep the signed PDF and supporting logs together.

If a signer cannot open the file, check browser support in Chrome, Firefox, Safari, or Edge, and confirm the device can access the current signNow session. Mobile signing works on iOS and Android.

For U.S. enforceability, ESIGN and UETA focus on intent, attribution, and record retention. If those elements are weak, the document may be harder to defend in a dispute even if the signature appears valid.