- name
- merge-pdfs
- description
- Combine two or more PDFs into a single document. Supports URLs, base64, multipart uploads, and custom metadata.
Merge PDFs
What It Does
Combines two or more PDFs into a single document. Google Drive share links are automatically converted to direct-download URLs.
When to Use
- Combine multiple PDF invoices, reports, or contracts into one file
- Merge chapters or sections into a single document
Required Inputs
Provide one of:
urls— array of PDF URLs (2-25)files— array of base64-encoded PDFs- Multipart upload with
filesfield(s)
Authentication
Send your API key in the CLIENT-API-KEY header.
Get your free API key at https://pdfapihub.com. Full API documentation is available at https://pdfapihub.com/docs.
Use Cases
- Invoice Bundling — Combine monthly invoices into a single PDF for clients
- Report Assembly — Merge cover page, table of contents, and report chapters into one document
- Legal Document Packets — Bundle contracts, appendices, and exhibits into one filing
- Student Submissions — Merge multiple assignment PDFs into one submission file
- Mortgage/Loan Packages — Combine application forms, ID scans, and financial docs into one package
- Book Assembly — Merge individual chapter PDFs into a complete manuscript
Limits
| Constraint | Value |
|---|---|
| Max input files | 25 |
| Max pages per document | 200 |
| Max total pages | 500 |
| Max input file size | 50 MB |
| Download timeout | 60 s |
Example Usage
curl -X POST https://pdfapihub.com/api/v1/pdf/merge \
-H "CLIENT-API-KEY: your_api_key" \
-H "Content-Type: application/json" \
-d '{
"urls": [
"https://pdfapihub.com/sample.pdf",
"https://pdfapihub.com/sample1.pdf"
],
"output": "url"
}'