Sign PDF - Image Signature for Make

PDF4me Sign PDF module delivers automated image-based signature application to PDF documents within Make scenarios with precise positioning and transparency control. This professional signing service applies signature images, handwritten signature scans, authorized stamps, and approval marks—enabling automated document signing, approval workflows, authorization marking, and signature distribution workflows across cloud storage platforms and business applications.

Authenticating Your API Request

To access the PDF4me Web API through Make, every request must include proper authentication credentials. Authentication ensures secure communication and validates your identity as an authorized user, enabling seamless integration between your Make scenarios and PDF4me's powerful signature services.

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Key Features

• Image Signature: Apply signature image files to PDFs
• Position Control: Precise placement with alignment and margins
• Multi-Page Signing: Sign specific pages or all pages
• Transparency Control: Adjust signature opacity and transparency
• Batch Signing: Sign multiple documents with iterator modules

Parameters

Complete list of parameters for the Sign PDF module. Configure these parameters to control signature application.

Important: Parameters marked with an asterisk (***) are required and must be provided for the module to function correctly.

Parameter	Type	Description	Example
PDF File Name***	String	Source PDF Filename • Specify filename with .pdf extension • Map from previous module output • Document to receive signature • Supports dynamic naming	contract.pdf
PDF File***	Buffer	PDF File Content • Map PDF file buffer from previous module • Source from Dropbox, Google Drive, HTTP • Binary PDF to sign • Contract, agreement, or document	[PDF Buffer]
Image Name***	String	Signature Image Filename • Filename of signature image • PNG recommended for transparency • Used for identification • Supports dynamic naming	signature.png
Image File***	Buffer	Signature Image Content • Map signature image buffer • Scanned or digital signature image • Binary image data (PNG, JPG) • Transparent background recommended	[Signature Image]
Horizontal Alignment***	String	Horizontal Position • Left - Align to left edge • Center - Center horizontally • Right - Align to right edge • Combined with horizontal margin	Right
Vertical alignment***	String	Vertical Position • Top - Align to top edge • Middle - Center vertically • Bottom - Align to bottom edge • Combined with vertical margin	Bottom
Image Width in MM***	Integer	Signature Width • Width in millimeters (max 500mm) • 0 = auto-size based on height • Controls signature horizontal size • Typical: 40-60mm for signatures	50
Image Height in MM***	Integer	Signature Height • Height in millimeters (max 500mm) • 0 = auto-size based on width • Controls signature vertical size • Maintain aspect ratio	20
Horizontal Margin in MM***	String	Horizontal Offset • Distance from edge in millimeters • Creates gap from page edge • Ignored if Center alignment • Fine-tune exact position	15
Vertical Margin in MM***	String	Vertical Offset • Distance from edge in millimeters • Creates gap from page edge • Ignored if Middle alignment • Prevent overlap with content	15
Pages***	String	Target Pages • Page numbers or text values • Numbers: "1", "1,2,3" or ranges "1-5" • Text: "first", "last", "all" • Specify where signature appears	last
Transparency***	Integer	Signature Opacity • Range from 0 (transparent) to 100 (opaque) • 0 = maximum transparency • 100 = completely opaque • Typical: 100 for signatures	100

Output

The PDF4me Sign PDF module returns comprehensive output data for seamless Make scenario integration:

Table

Table View

Response data in a structured table format:

Parameter	Type	Description
Name	String	Output PDF filename with signature
Doc Data	Buffer	Signed PDF in Base64/Buffer format

JSON

JSON Response Format

The raw JSON response from the module:

{
  "Name": "contract_signed.pdf",
  "Doc Data": "[Buffer Data with Signature]"
}

Scenario Integration

Make Scenario Usage

Use signed PDF in subsequent modules:

• Email Distribution: Send signed documents to parties
• Cloud Archive: Upload signed contracts to storage
• Database Link: Attach signed PDFs to records
• Approval Chain: Route to next approver
• Client Delivery: Share signed documents
• Legal Archive: Store executed agreements

Scenario Examples

The PDF4me Sign PDF module in Make provides comprehensive scenario templates for signature automation:

Auto Approval

Automated Document Approval Signature Scenario

Transform your approvals with automated signature application:

Complete Scenario Steps:

1. Trigger: Document approved in approval system
2. Get Approved Document: Download document requiring signature
3. Get Approver Signature: Retrieve approver signature image
4. Apply Signature: Insert signature on last page bottom right
5. Add Approval Date: Include approval timestamp
6. Upload Signed: Save to approved documents folder
7. Email Stakeholders: Send signed approval to requester
8. Update System: Mark document as signed and approved

Business Benefits:

• Signs 150+ approvals monthly automatically
• Provides visual approval confirmation with signature
• Eliminates manual signature application process
• Maintains professional approval documentation

Create Scenario

Certificate Signing

Automated Certificate Signature Application Scenario

Streamline your credentialing with automated certificate signing:

Complete Scenario Steps:

1. Trigger: Student completes course successfully
2. Generate Certificate: Create certificate PDF with student info
3. Get Director Signature: Retrieve director signature image
4. Apply Signature: Insert signature in designated area
5. Add Seal: Include institution seal image
6. Upload Signed Certificate: Save to certificates archive
7. Email Student: Send signed certificate to student
8. Record Issuance: Log certificate in tracking database

Business Benefits:

• Signs 300+ certificates monthly automatically
• Provides authentic-looking signed credentials
• Eliminates physical signature requirements
• Enables instant certificate delivery

Create Scenario

Letter Signing

Automated Official Letter Signature Scenario

Optimize your correspondence with automated letter signing:

Complete Scenario Steps:

1. Trigger: Official letter finalized for distribution
2. Get Letter PDF: Download letter document
3. Get Executive Signature: Retrieve CEO/executive signature
4. Apply Signature: Insert signature above printed name
5. Add Date: Include signature date
6. Upload Signed Letter: Save to correspondence folder
7. Email Recipient: Send signed letter to recipient
8. Archive Copy: Store signed letter in archive

Business Benefits:

• Signs 80+ official letters monthly automatically
• Provides professional signed correspondence
• Eliminates physical signing workflow delays
• Maintains consistent signature appearance

Create Scenario

Invoice Signing

Automated Invoice Authorization Signature Scenario

Enhance your billing with automated invoice signature:

Complete Scenario Steps:

1. Trigger: Invoice approved for customer delivery
2. Get Invoice PDF: Download finalized invoice
3. Get Authorized Signature: Retrieve finance manager signature
4. Apply Signature: Insert on invoice bottom
5. Add Authorization Text: Include "Authorized by" text
6. Upload Signed Invoice: Save to invoices folder
7. Email Customer: Send authorized invoice
8. Update Accounting: Mark invoice as signed and sent

Business Benefits:

• Signs 400+ invoices monthly automatically
• Provides authorization verification on invoices
• Eliminates manual invoice signing delays
• Maintains professional invoice presentation

Create Scenario

Industry Use Cases & Applications

Legal & Contracts

• Contract Signing: Apply signature images to agreements
• Authorization Documents: Sign authorization forms
• Legal Letters: Add signatures to legal correspondence
• Approval Documents: Sign approval and consent forms

Education & Credentials

• Certificate Signing: Apply institution signatures to certificates
• Transcript Signing: Sign official academic transcripts
• Diploma Signing: Add signatures to diplomas
• Award Letters: Sign scholarship and award notifications

Finance & Accounting

• Invoice Authorization: Sign invoices for authenticity
• Financial Approvals: Apply signatures to financial documents
• Check Signing: Add signatures to check images
• Payment Authorizations: Sign payment approval documents

Corporate & Business

• Approval Workflows: Sign approved documents automatically
• Executive Letters: Apply executive signatures to correspondence
• Authorization Forms: Sign business authorization documents
• Official Communications: Add signatures to official letters

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