PDF to PDF API

Merge PDFs, extract or remove pages, and prepare documents for your application.

Start free trial PDF to PDF API documentation

Merge PDF files with one API call

Merge two local PDF files into one PDF, keeping their order.

curl --fail --user "demo:demo" \
  --form "input_format=pdf" \
  --form "output_format=pdf" \
  --form "f_1=@first.pdf" \
  --form "f_2=@second.pdf" \
  --output "document.pdf" \
  https://api.pdfcrowd.com/convert/24.04/

import pdfcrowd

api = pdfcrowd.PdfToPdfClient("demo", "demo")
api.addPdfFile("first.pdf")
api.addPdfFile("second.pdf")
api.convertToFile("document.pdf")

<?php
require "pdfcrowd.php";

$api = new \Pdfcrowd\PdfToPdfClient("demo", "demo");
$api->addPdfFile("first.pdf");
$api->addPdfFile("second.pdf");
$api->convertToFile("document.pdf");

var pdfcrowd = require("pdfcrowd");
var api = new pdfcrowd.PdfToPdfClient("demo", "demo");
api.addPdfFile("first.pdf");
api.addPdfFile("second.pdf");
api.convertToFile("document.pdf",
    function(error, fileName) {
        if (error) return console.error(error);
        console.log("Created " + fileName);
    });

import com.pdfcrowd.*;

Pdfcrowd.PdfToPdfClient api =
    new Pdfcrowd.PdfToPdfClient("demo", "demo");
api.addPdfFile("first.pdf");
api.addPdfFile("second.pdf");
api.convertToFile("document.pdf");

pdfcrowd.PdfToPdfClient api =
    new pdfcrowd.PdfToPdfClient("demo", "demo");
api.addPdfFile("first.pdf");
api.addPdfFile("second.pdf");
api.convertToFile("document.pdf");

require "pdfcrowd"

api = Pdfcrowd::PdfToPdfClient.new("demo", "demo")
api.addPdfFile("first.pdf")
api.addPdfFile("second.pdf")
api.convertToFile("document.pdf")

package main

import "github.com/pdfcrowd/pdfcrowd-go"

func main() {
    api := pdfcrowd.NewPdfToPdfClient("demo", "demo")
    api.AddPdfFile("first.pdf")
    api.AddPdfFile("second.pdf")
    err := api.ConvertToFile("document.pdf")
    if err != nil {
        panic(err)
    }
}

Use the PDFs your application already has

Upload PDF files or supply their binary data through an SDK. Join documents in the order you supply them, extract selected pages into a new PDF, or remove pages from an existing document.

PDFCrowd handles the PDF processing, so you can keep local PDF-tool dependencies out of your application server. Your application selects the documents and pages; the API returns the resulting PDF.