Dynamic PDF Editing • PrefillPDF API

Add Text to PDFs Programmatically

Place names, dates, totals, labels, notes, and other dynamic text into PDF documents from your application.

Updated·Jul 13, 2026

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Explore: API Docs · Use Cases · Pricing · Fill PDF Forms API

What you can do with Add Text to PDF API

Precise Placement

Position text at specific coordinates.

Dynamic Values

Use application data in every generated document.

Repeatable Layouts

Apply the same placement rules consistently.

API Automation

Generate updated PDFs inside your workflow.

Fast Generation

Avoid opening a PDF editor for each document.

Flexible Use

Add labels, notes, IDs, or customer data.

How it works

1
Choose the source PDF
Provide the document that needs dynamic text.
2
Define text and placement
Send the content and its page position.
3
Generate the PDF
Call the API from your application or workflow.
4
Use the result
Download, email, store, or continue processing the PDF.

Common workflows

Customer Names

Personalize PDFs for each recipient.

Dates and IDs

Add timestamps, reference IDs, and document numbers.

Approval Notes

Insert workflow comments or review status.

Pricing and Totals

Place calculated amounts into documents.

Page Labels

Add classifications or custom page headings.

Internal Tracking

Apply codes used by downstream systems.

Benefits

Personalize PDFs automatically

Keep placement consistent

Use live application data

Reduce manual editing

Integrate with existing workflows

Generate high-volume documents

Related PDF API features

Extract JSON from PDF API

Convert PDF documents into structured JSON that is easier to validate, analyze, store, and send into automated workflows.

Fill PDF Forms API

Automatically fill PDF form fields using your data, templates, and API-driven workflows.

PDF Form Field Extraction API

Detect and return available PDF form field names so developers can map data accurately before generating documents.

Extract Text from PDF API

Extract and clean readable text from PDF files for search, summaries, analysis, classification, and automated workflows.

FAQ

Can I choose where the text appears?

Yes. Text can be placed on a selected page using positioning values supported by the API.

Can the text be different for each PDF?

Yes. Send unique values for each request.

Can I add multiple text elements?

Yes. A workflow can include multiple pieces of text where supported by your request structure.

Can this be used with templates?

Yes. Reuse the same base PDF and apply dynamic text for each generated document.

Is this different from filling form fields?

Yes. Text placement writes content at defined positions, while form filling targets existing interactive PDF fields.

Start using Add Text to PDF API

Connect your PDF workflow to PrefillPDF and automate document processing from your application.