PDF.co Complete Guide: Powerful Document Processing API for Developers

Introduction

In today's digital workflow, efficient document processing is crucial for businesses and developers alike. PDF.co provides a comprehensive suite of APIs that transform how you handle documents, from conversion and parsing to generation and automation. This guide explores PDF.co's powerful features and shows you how to leverage them in your projects.

What is PDF.co?

PDF.co is a cloud-based document processing platform that offers RESTful APIs for handling PDF files and various document formats. Whether you're a developer building custom integrations or a business user looking for no-code automation solutions, PDF.co provides tools to streamline your document workflows.

Get Started with PDF.co →

Core Features

1. Document Conversion

PDF.co excels at converting between multiple document formats:

To PDF:

HTML to PDF conversion
Excel (XLS/XLSX) to PDF
Word (DOC/DOCX) to PDF
Images (JPG/PNG/TIFF) to PDF
CSV to PDF
Email files (.msg/.eml) to PDF
URLs to PDF

From PDF:

PDF to various formats
Extract text and data from PDFs
Convert PDF pages to images

2. AI-Powered Document Parsing

One of PDF.co's standout features is its AI Invoice Parser:

Automatic Data Extraction: Extract structured data from invoices without templates
Layout Agnostic: Works with any invoice format or layout
High Accuracy: Advanced AI ensures reliable data extraction
Time Saving: Process invoices faster than manual methods

The Document Parser can also extract:

Fields and values from forms
Tables and structured data
Barcodes from documents
Custom data based on extraction templates

3. PDF Editing and Manipulation

Comprehensive PDF editing capabilities:

Add Content: Insert text, images, forms, and links
Merge Documents: Combine multiple PDFs or various document types
Compress PDFs: Reduce file size up to 13x smaller
Delete Pages: Remove unwanted pages from PDFs
Extract Attachments: Pull embedded files from PDFs
Fill Forms: Programmatically fill PDF form fields

4. Barcode Generation and Reading

Complete barcode solution:

Generate Barcodes: Create QR Code, Datamatrix, Code 39, Code 128, PDF417 and more
Read Barcodes: Extract barcode data from images and PDFs
Multi-Format Support: Handle all popular barcode types
High Quality: Generate crisp, scappable barcode images

5. Text Processing and OCR

Advanced text capabilities:

Make Text Searchable: Convert scanned PDFs to searchable documents using OCR
Make Text Unsearchable: Create "scanned" versions of PDFs for security
Find Text: Locate text in PDFs with coordinate information
Regular Expressions: Support for pattern-based text searching
AI Table Detection: Automatically detect and analyze tables in documents

6. File Management

Secure file handling infrastructure:

Temporary Storage: Upload files with automatic cleanup (1-hour default)
Pre-signed URLs: Secure file upload for files up to 100MB
Base64 Upload: Upload files using base64 encoding
URL Upload: Download and process files from external URLs
MD5 Hashing: Verify file integrity with hash calculations

Integration Options

For Developers

PDF.co provides straightforward RESTful APIs:

// Example: Convert HTML to PDF
const response = await fetch("https://api.pdf.co/v1/pdf/convert/from/html", {
  method: "POST",
  headers: {
    "x-api-key": "YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    html: "<h1>Hello World</h1><p>This is a test PDF</p>",
    name: "output.pdf",
  }),
});

For Automation Users

PDF.co integrates with popular automation platforms:

Make (formerly Integromat): Build visual automation workflows
Zapier: Connect with 5000+ apps without coding
n8n: Create custom automation nodes
Custom Integrations: RESTful API works with any platform

Explore PDF.co Integrations →

Async vs Sync Processing

PDF.co supports both processing modes:

Synchronous Mode

Immediate response
Best for quick operations
Suitable for small files
Simple implementation

Asynchronous Mode

Background job processing
Ideal for large files or complex operations
Use Job Check API to monitor progress
Better for production workloads

Popular Use Cases

1. Automated Invoice Processing

Invoice Received → AI Parser Extracts Data → Save to Database → Trigger Approval Workflow

2. Document Archiving

Scan Documents → OCR Processing → Make Searchable → Store in Archive System

3. Report Generation

Data Source → HTML Template → PDF Conversion → Email Distribution

4. Batch Document Conversion

Multiple Files → Queue Processing → Convert to PDF → Merge → Download

Getting Started

Step 1: Create Account

Create Your Account →

Step 2: Get API Key

Once registered, find your API key in the dashboard.

Step 3: Make Your First Request

Start with a simple conversion or parsing task to test the API.

Step 4: Scale Your Integration

As you become familiar with the API, expand to more complex workflows.

Pricing and Credits

PDF.co operates on a credit-based system:

Each API call consumes credits based on complexity
Different operations have different credit costs
Monitor your balance via the API or dashboard
Flexible plans for various usage levels

Check your account balance:

const balance = await fetch("https://api.pdf.co/v1/account/balance", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});

Best Practices

1. Use Async for Large Files

For files over 10MB or complex operations, always use async mode to avoid timeouts.

2. Implement Error Handling

Check response codes and handle errors gracefully in your applications.

3. Manage Temporary Files

Remember that temporary files expire after 1 hour. Download or process them promptly.

4. Monitor Credit Usage

Regularly check your balance to avoid service interruptions.

5. Leverage Templates

For recurring document structures, use templates to improve efficiency and consistency.

Advanced Features

Document Classifier

Automatically categorize documents based on content:

Sort incoming documents by type
Apply appropriate processing templates
Route to correct workflows

Email Processing

Extract and process email data:

Decode email messages
Extract attachments
Convert emails to PDF
Send emails with attachments

HTML Templates

Create reusable PDF generation templates:

Store templates in PDF.co
Use variables for dynamic content
Generate consistent branded documents

Security and Compliance

PDF.co provides:

API Key Authentication: Secure access control
Pre-signed URLs: Safe file uploads
Temporary Storage: Automatic file cleanup
Access Control: Account-based file isolation
HTTPS Encryption: All data in transit encrypted

Troubleshooting

Common Issues

Q: Why is my API call timing out? A: For large files or complex operations, switch to async mode and use the Job Check API.

Q: How do I check my remaining credits? A: Use the account balance endpoint or check your dashboard.

Q: Can I process password-protected PDFs? A: Yes, provide the password parameter in your API request.

Q: What's the maximum file size? A: Use async mode with pre-signed URLs for files up to 100MB.

Summary

PDF.co offers a comprehensive, developer-friendly platform for all your document processing needs. From simple conversions to AI-powered data extraction, the API suite provides the tools to automate and streamline your document workflows.

Whether you're building a custom application, setting up automation workflows, or processing documents at scale, PDF.co has the capabilities to support your requirements.

Start Building with PDF.co Today →