---
title: Merge Multiple PDF Files into One PDF API
slug: merge-multiple-pdf-files-into-one-pdf
url: https://apyhub.com/freedailypro/service/merge-multiple-pdf-files-into-one-pdf
provider: FreeDailyPro
tags: [merge, pdf, multiple, merge-pdfs]
auth: api_key
version: v1
service_type: sync
endpoints: 1
atoms: 10
mcp: true
---

# Merge Multiple PDF Files into One PDF API

Merge multiple PDF files into a single PDF using an API. Combine reports, invoices, scanned documents

## Endpoints

| Method | URL | Description | Atoms |
| --- | --- | --- | --- |
| POST | `https://api.eu.apyhub.com/freedailypro/merge-multiple-pdf-files-into-one-pdf/merge` | What it does Merges multiple PDF files into a single PDF and returns the merged PDF as binary outpu… | 10 |

## Endpoint reference

### Merge PDFs into one

`POST https://api.eu.apyhub.com/freedailypro/merge-multiple-pdf-files-into-one-pdf/merge` · 10 atoms · accepts `multipart/form-data` · returns `application/json`

| Parameter | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `files` | body | array of string | yes | At least two PDFs (repeat the field). 60 MB in total. |

#### Quickstart

Merge at least two PDF files into one by uploading them as multipart form files.

```bash
curl -X POST "https://api.eu.apyhub.com/freedailypro/merge-multiple-pdf-files-into-one-pdf/merge" \
  -H "apy-token: $APY_TOKEN" \
  -F "files=@/path/to/file1.pdf" \
  -F "files=@/path/to/file2.pdf"
```

#### What you'll get back

Returns a binary file (`string` with `format: binary`) containing the merged PDF.

## About

## What it does

PDF Merge combines multiple PDF files into a single PDF. Send at least two files in the `files` array, and you get one merged PDF back as binary output.

Use it when you need to turn separate reports, invoices, scans, or contract pages into one document for storage, sharing, or downstream processing. The endpoint accepts PDF files as repeated binary file uploads in the request body, with a total size limit of 60 MB.

PDF Merge is a fit for document workflows where order matters. You can merge batches of statements into a monthly packet, combine application attachments into a single submission, or join scanned pages before archiving. The response is a downloadable PDF file, so it slots cleanly into file pipelines without extra parsing.

If your app already accepts uploaded PDFs, this endpoint gives you a simple way to assemble them into one file without handling PDF internals yourself.

## Usage

Base URL: `https://api.eu.apyhub.com` (default region — see
`GET https://apyhub.com/api/public/regions` for the rest).

Authenticate with an ApyHub API key in the `apy-token` header.
Full docs and a live playground: https://apyhub.com/freedailypro/service/merge-multiple-pdf-files-into-one-pdf