PDF Add

curl --location --request POST 'https://api.pdf.co/v1/pdf/edit/add' \
--header 'Content-Type: application/json' \
--header 'x-api-key: *******************' \
--data-raw '{
"async": false,
"inline": true,
"name": "f1040-form-filled",
"url": "pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-form/f1040.pdf",
"annotationsString": "250;20;0-;PDF form filled with PDF.co API;24+bold+italic+underline+strikeout;Arial;FF0000;www.pdf.co;true",
"imagesString": "100;180;0-;pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-edit/logo.png|400;180;0-;pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-edit/logo.png;www.pdf.co;200;200",
"fieldsString": "1;topmostSubform[0].Page1[0].f1_02[0];John A. Doe|1;topmostSubform[0].Page1[0].FilingStatus[0].c1_01[1];true|1;topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_04[0];123456789"
}'

var https = require("https");
var path = require("path");
var fs = require("fs");

// The authentication key (API Key).
// Get your own by registering at https://app.pdf.co
const API_KEY = "***********************************";

// Direct URL of source PDF file.
// You can also upload your own file into PDF.co and use it as url. Check "Upload File" samples for code snippets: https://github.com/bytescout/pdf-co-api-samples/tree/master/File%20Upload/
const SourceFileUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-edit/sample.pdf";

// Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
const Pages = "";

// PDF document password. Leave empty for unprotected documents.
const Password = "";

// Destination PDF file name
const DestinationFile = "./result.pdf";

// Text annotation params
const Type = "annotation";
const X = 400;
const Y = 600;
const Text = "APPROVED";
const FontName = "Times New Roman";
const FontSize = 24;
const Color = "FF0000";

// * Add Text *
// Prepare request to `PDF Edit` API endpoint
var queryPath = `/v1/pdf/edit/add`;

// JSON payload for api request
var jsonPayload = JSON.stringify({
    name: path.basename(DestinationFile),
    url: SourceFileUrl,
    password: Password,
    annotations:[
        {
            pages: Pages,
            x: X,
            y: Y,
            text: Text,
            fontname: FontName,
            size: FontSize,
            color: Color
        }
    ]
});

var reqOptions = {
    host: "api.pdf.co",
    method: "POST",
    path: encodeURI(queryPath),
    headers: {
        "x-api-key": API_KEY,
        "Content-Type": "application/json",
        "Content-Length": Buffer.byteLength(jsonPayload, 'utf8')
    }
};

// Send request
var postRequest = https.request(reqOptions, (response) => {
    response.on("data", (d) => {
        // Parse JSON response
        var data = JSON.parse(d);

        if (data.error == false) {
            // Download the output file
            var file = fs.createWriteStream(DestinationFile);
            https.get(data.url, (response2) => {
                response2.pipe(file).on("close", () => {
                    console.log(`Generated PDF file saved to '${DestinationFile}' file.`);
                });
            });
        }
        else {
            // Service reported error
            console.log(data.message);
        }
    });
}).on("error", (e) => {
    // Request error
    console.error(e);
});

// Write request data
postRequest.write(jsonPayload);
postRequest.end();

<?php

  $curl = curl_init();

  curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://api.pdf.co/v1/pdf/edit/add',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => '',
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS =>'{
      "async": false,
      "encrypt": false,
      "inline": true,
      "name": "f1040-form-filled",
      "url": "bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-form/f1040.pdf",
      "annotationsString": "250;20;0-;PDF form filled with PDF.co API;24+bold+italic+underline+strikeout;Arial;FF0000;www.pdf.co;true",
      "imagesString": "100;180;0-;bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-edit/logo.png|400;180;0-;bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-edit/logo.png;www.pdf.co;200;200",
      "fieldsString": "1;topmostSubform[0].Page1[0].f1_02[0];John A. Doe|1;topmostSubform[0].Page1[0].FilingStatus[0].c1_01[1];true|1;topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_04[0];123456789"
  }',
    CURLOPT_HTTPHEADER => array(
      'Content-Type: application/json',
      'x-api-key: '
    ),
  ));

  $response = curl_exec($curl);

  curl_close($curl);
  echo $response;

?>

using Newtonsoft.Json.Linq;
using System;
using System.Globalization;
using System.IO;
using System.Net;

namespace PDFcoApiExample
{
    class Program
  {
    // The authentication key (API Key).
    // Get your own by registering at https://app.pdf.co
    const String API_KEY = "*****************************************";

    // Direct URL of source PDF file.
    // You can also upload your own file into PDF.co and use it as url. Check "Upload File" samples for code snippets: https://github.com/bytescout/pdf-co-api-samples/tree/master/File%20Upload/
    const string SourceFileUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-edit/sample.pdf";
    // Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
    const string Pages = "";
    // PDF document password. Leave empty for unprotected documents.
    const string Password = "";

    // Destination PDF file name
    const string DestinationFile = @".\result.pdf";

    // Text annotation params
    const string Type = "annotation";
    const int X = 400;
    const int Y = 600;
    const string Text = "APPROVED";
    const string FontName = "Times New Roman";
    const float FontSize = 24;
    const string FontColor = "FF0000";


    static void Main(string[] args)
    {
      // Create standard .NET web client instance
      WebClient webClient = new WebClient();

      // Set API Key
      webClient.Headers.Add("x-api-key", API_KEY);

      // * Add text annotation *

      // Prepare requests params as JSON
      // See documentation: https://developer.pdf.co
            string jsonPayload = $@"{{
    ""name"": ""{Path.GetFileName(DestinationFile)}"",
    ""url"": ""{SourceFileUrl}"",
    ""password"": ""{Password}"",
    ""annotations"": [
        {{
            ""x"": {X},
            ""y"": {Y},
            ""text"": ""{Text}"",
            ""fontname"": ""{FontName}"",
            ""size"": ""{FontSize.ToString(CultureInfo.InvariantCulture)}"",
            ""color"": ""{FontColor}"",
            ""pages"": ""{Pages}""
        }}
    ]
}}"; ;

      try
      {
        // URL of "PDF Edit" endpoint
        string url = "https://api.pdf.co/v1/pdf/edit/add";

        // Execute POST request with JSON payload
        string response = webClient.UploadString(url, jsonPayload);

        // Parse JSON response
        JObject json = JObject.Parse(response);

        if (json["error"].ToObject<bool>() == false)
        {
          // Get URL of generated PDF file
          string resultFileUrl = json["url"].ToString();

                    // Download generated PDF file
          webClient.DownloadFile(resultFileUrl, DestinationFile);

          Console.WriteLine("Generated PDF file saved as \"{0}\" file.", DestinationFile);
        }
        else
        {
          Console.WriteLine(json["message"].ToString());
        }
      }
      catch (WebException e)
      {
        Console.WriteLine(e.ToString());
      }
            finally
            {
                webClient.Dispose();
            }

            Console.WriteLine();
      Console.WriteLine("Press any key...");
      Console.ReadKey();
    }
  }
}

package com.company;

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import okhttp3.*;

import java.io.*;
import java.net.*;
import java.nio.file.Path;
import java.nio.file.Paths;

public class Main
{
    // The authentication key (API Key).
    // Get your own by registering at https://app.pdf.co
    final static String API_KEY = "***********************************";

    // Direct URL of source PDF file.
    // You can also upload your own file into PDF.co and use it as url. Check "Upload File" samples for code snippets: https://github.com/bytescout/pdf-co-api-samples/tree/master/File%20Upload/
    final static String SourceFileUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-edit/sample.pdf";
    // Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
  final static String Pages = "";
    // PDF document password. Leave empty for unprotected documents.
  final static String Password = "";

    // Destination PDF file name
  final static Path ResultFile = Paths.get(".\\result.pdf");

    // Text annotation params
    private final static String Type2 = "annotation";
    private final static int X2 = 400;
    private final static int Y2 = 600;
    private final static String Text = "APPROVED";
    private final static String FontName = "Times New Roman";
    private final static float FontSize = 24;
    private final static String Color = "FF0000";

    public static void main(String[] args) throws IOException
    {
        // Create HTTP client instance
        OkHttpClient webClient = new OkHttpClient();

        // * Add text annotation *
        // Prepare URL for `PDF Edit` API call
        String query = "https://api.pdf.co/v1/pdf/edit/add";

        // Make correctly escaped (encoded) URL
        URL url = null;
        try
        {
            url = new URI(null, query, null).toURL();
        }
        catch (URISyntaxException e)
        {
            e.printStackTrace();
        }

        // Create JSON payload
        String jsonPayload = String.format("{
            \"name\": \"%s\",
            \"url\": \"%s\",
            \"password\": \"%s\",
            annotations:[{
                \"pages\": \"%s\",
                \"text\": \"%s\",
                \"x\": \"%s\",
                \"y\": \"%s\",
                \"fontname\": \"%s\",
                \"size\": \"%s\",
                \"color\": \"%s\"
            }]
        }",
            ResultFile.getFileName(),
            SourceFileUrl,
            Password,
            Pages,
            Text,
            X2,
            Y2,
            FontName,
            FontSize,
            Color);

        // Prepare request body
        RequestBody body = RequestBody.create(MediaType.parse("application/json"), jsonPayload);

        // Prepare request
        Request request = new Request.Builder()
            .url(url)
            .addHeader("x-api-key", API_KEY) // (!) Set API Key
            .addHeader("Content-Type", "application/json")
            .post(body)
            .build();

        // Execute request
        Response response = webClient.newCall(request).execute();

        if (response.code() == 200)
        {
            // Parse JSON response
            JsonObject json = new JsonParser().parse(response.body().string()).getAsJsonObject();

            boolean error = json.get("error").getAsBoolean();
            if (!error)
            {
                // Get URL of generated output file
                String resultFileUrl = json.get("url").getAsString();

                // Download the image file
                downloadFile(webClient, resultFileUrl, ResultFile);

                System.out.printf("Generated file saved to \"%s\" file.", ResultFile.toString());
            }
            else
            {
                // Display service reported error
                System.out.println(json.get("message").getAsString());
            }
        }
        else
        {
            // Display request error
            System.out.println(response.code() + " " + response.message());
        }
    }

    public static void downloadFile(OkHttpClient webClient, String url, Path destinationFile) throws IOException
    {
        // Prepare request
        Request request = new Request.Builder()
                .url(url)
                .build();
        // Execute request
        Response response = webClient.newCall(request).execute();

        byte[] fileBytes = response.body().bytes();

        // Save downloaded bytes to file
        OutputStream output = new FileOutputStream(destinationFile.toFile());
        output.write(fileBytes);
        output.flush();
        output.close();

        response.close();
    }
}

<?php

  $curl = curl_init();

  curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://api.pdf.co/v1/pdf/edit/add',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => '',
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS =>'{
      "async": false,
      "encrypt": false,
      "inline": true,
      "name": "f1040-form-filled",
      "url": "bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-form/f1040.pdf",
      "annotationsString": "250;20;0-;PDF form filled with PDF.co API;24+bold+italic+underline+strikeout;Arial;FF0000;www.pdf.co;true",
      "imagesString": "100;180;0-;bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-edit/logo.png|400;180;0-;bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-edit/logo.png;www.pdf.co;200;200",
      "fieldsString": "1;topmostSubform[0].Page1[0].f1_02[0];John A. Doe|1;topmostSubform[0].Page1[0].FilingStatus[0].c1_01[1];true|1;topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_04[0];123456789"
  }',
    CURLOPT_HTTPHEADER => array(
      'Content-Type: application/json',
      'x-api-key: '
    ),
  ));

  $response = curl_exec($curl);

  curl_close($curl);
  echo $response;

?>

import os
import requests # pip install requests

# The authentication key (API Key).
# Get your own by registering at https://app.pdf.co
API_KEY = "**************************************"

# Base URL for PDF.co Web API requests
BASE_URL = "https://api.pdf.co/v1"

def main(args = None):
    fillPDFForm()

def fillPDFForm():
    """Fill PDF form using PDF.co Web API"""

    # Prepare requests params as JSON
    # See documentation: https://developer.pdf.co
    payload = "{\n    \"async\": false,\n    \"encrypt\": false,\n    \"name\": \"f1040-filled\",\n    \"url\": \"https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-form/f1040.pdf\",\n    \"fields\": [\n        {\n            \"fieldName\": \"topmostSubform[0].Page1[0].FilingStatus[0].c1_01[1]\",\n            \"pages\": \"1\",\n            \"text\": \"True\"\n        },\n        {\n            \"fieldName\": \"topmostSubform[0].Page1[0].f1_02[0]\",\n            \"pages\": \"1\",\n            \"text\": \"John A.\"\n        },        \n        {\n            \"fieldName\": \"topmostSubform[0].Page1[0].f1_03[0]\",\n            \"pages\": \"1\",\n            \"text\": \"Doe\"\n        },        \n        {\n            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_04[0]\",\n            \"pages\": \"1\",\n            \"text\": \"123456789\"\n        },\n        {\n            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_05[0]\",\n            \"pages\": \"1\",\n            \"text\": \"Joan B.\"\n        },\n        {\n            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_05[0]\",\n            \"pages\": \"1\",\n            \"text\": \"Joan B.\"\n        },\n        {\n            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_06[0]\",\n            \"pages\": \"1\",\n            \"text\": \"Doe\"\n        },\n        {\n            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_07[0]\",\n            \"pages\": \"1\",\n            \"text\": \"987654321\"\n        }     \n\n\n\n    ],\n    \"annotations\":[\n        {\n            \"text\":\"Sample Filled with PDF.co API using /pdf/edit/add. Get fields from forms using /pdf/info/fields\",\n            \"x\": 10,\n            \"y\": 10,\n            \"size\": 12,\n            \"pages\": \"0-\",\n            \"color\": \"FFCCCC\",\n            \"link\": \"https://pdf.co\"\n        }\n    ],    \n    \"images\": [        \n    ]\n}"

    # Prepare URL for 'Fill PDF' API request
    url = "{}/pdf/edit/add".format(BASE_URL)

    # Execute request and get response as JSON
    response = requests.post(url, data=payload, headers={"x-api-key": API_KEY, 'Content-Type': 'application/json'})
    if (response.status_code == 200):
        json = response.json()

        if json["error"] == False:
            #  Get URL of result file
            resultFileUrl = json["url"]
            # Download result file
            r = requests.get(resultFileUrl, stream=True)
            if (r.status_code == 200):
                with open(destinationFile, 'wb') as file:
                    for chunk in r:
                        file.write(chunk)
                print(f"Result file saved as \"{destinationFile}\" file.")
            else:
                print(f"Request error: {response.status_code} {response.reason}")
        else:
            # Show service reported error
            print(json["message"])
    else:
        print(f"Request error: {response.status_code} {response.reason}")

if __name__ == '__main__':
    main()

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Net;
using System.Runtime.InteropServices;

namespace PDFcoApiExample
{
    class Program
    {
        // The authentication key (API Key).
        // Get your own by registering at https://app.pdf.co
        const String API_KEY = "*************************";

        // Direct URL of source PDF file.
        const string SourceFileUrl = "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-form/f1040.pdf";
        // PDF document password. Leave empty for unprotected documents.
        const string Password = "";
        // File name for generated output. Must be a String
        const string FileName = "f1040-form-filled";

        // Destination File Name
        const string DestinationFile = "./result.pdf";

        static void Main(string[] args)
        {
            // Create standard .NET web client instance
            WebClient webClient = new WebClient();

            // Set API Key
            webClient.Headers.Add("x-api-key", API_KEY);

            // Values to fill out pdf fields with built-in pdf form filler
            var fields = new List<object> {
                new { fieldName = "topmostSubform[0].Page1[0].FilingStatus[0].c1_01[1]", pages = "1", text = "True" },
                new { fieldName = "topmostSubform[0].Page1[0].f1_02[0]", pages = "1", text = "John A." },
                new { fieldName = "topmostSubform[0].Page1[0].f1_03[0]", pages = "1", text = "Doe" },
                new { fieldName = "topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_04[0]", pages = "1", text = "123456789" },
                new { fieldName = "topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_05[0]", pages = "1", text = "John  B." },
                new { fieldName = "topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_06[0]", pages = "1", text = "Doe" },
                new { fieldName = "topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_07[0]", pages = "1", text = "987654321" }
            };

            // If enabled, Runs processing asynchronously. Returns Use JobId that you may use with /job/check to check state of the processing (possible states: working,
            var async = false;

            // Prepare requests params as JSON
            // See documentation: https://developer.pdf.co
            Dictionary<string, object> parameters = new Dictionary<string, object>();
            parameters.Add("url", SourceFileUrl);
            parameters.Add("name", FileName);
            parameters.Add("password", Password);
            parameters.Add("async", async);
            parameters.Add("fields", fields);

            // Convert dictionary of params to JSON
            string jsonPayload = JsonConvert.SerializeObject(parameters);

            try
            {
                // URL of "PDF Edit" endpoint
                string url = "https://api.pdf.co/v1/pdf/edit/add";

                // Execute POST request with JSON payload
                string response = webClient.UploadString(url, jsonPayload);

                // Parse JSON response
                JObject json = JObject.Parse(response);

                if (json["error"].ToObject<bool>() == false)
                {
                    // Get URL of generated PDF file
                    string resultFileUrl = json["url"].ToString();

                    // Download generated PDF file
                    webClient.DownloadFile(resultFileUrl, DestinationFile);

                    Console.WriteLine("Generated PDF file saved as \"{0}\" file.", DestinationFile);
                }
                else
                {
                    Console.WriteLine(json["message"].ToString());
                }
            }
            catch (WebException e)
            {
                Console.WriteLine(e.ToString());
            }
            finally
            {
                webClient.Dispose();
            }

            Console.WriteLine();
            Console.WriteLine("Press any key...");
            Console.ReadKey();
        }
    }
}

package com.company;

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import okhttp3.*;

import java.io.*;
import java.net.*;
import java.nio.file.Path;
import java.nio.file.Paths;

public class Main
{
    // The authentication key (API Key).
    // Get your own by registering at https://app.pdf.co
    final static String API_KEY = "****************************";

    // Direct URL of source PDF file.
    final static String SourceFileUrl = "bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-form/f1040.pdf";
    // PDF document password. Leave empty for unprotected documents.
    final static String Password = "";

    // Destination PDF file name
    final static Path ResultFile = Paths.get(".\\result.pdf");

    public static void main(String[] args) throws IOException
    {
        // Create HTTP client instance
        OkHttpClient webClient = new OkHttpClient();

        // Prepare URL for `PDF Edit` API call
        String query = "https://api.pdf.co/v1/pdf/edit/add";

        // Prepare form filling data
        String fields = "[\n" +
                "        {\n" +
                "            \"fieldName\": \"topmostSubform[0].Page1[0].FilingStatus[0].c1_01[1]\",\n" +
                "            \"pages\": \"1\",\n" +
                "            \"text\": \"True\"\n" +
                "        },\n" +
                "        {\n" +
                "            \"fieldName\": \"topmostSubform[0].Page1[0].f1_02[0]\",\n" +
                "            \"pages\": \"1\",\n" +
                "            \"text\": \"John A.\"\n" +
                "        },        \n" +
                "        {\n" +
                "            \"fieldName\": \"topmostSubform[0].Page1[0].f1_03[0]\",\n" +
                "            \"pages\": \"1\",\n" +
                "            \"text\": \"Doe\"\n" +
                "        },        \n" +
                "        {\n" +
                "            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_04[0]\",\n" +
                "            \"pages\": \"1\",\n" +
                "            \"text\": \"123456789\"\n" +
                "        },\n" +
                "        {\n" +
                "            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_05[0]\",\n" +
                "            \"pages\": \"1\",\n" +
                "            \"text\": \"Joan B.\"\n" +
                "        },\n" +
                "        {\n" +
                "            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_05[0]\",\n" +
                "            \"pages\": \"1\",\n" +
                "            \"text\": \"Joan B.\"\n" +
                "        },\n" +
                "        {\n" +
                "            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_06[0]\",\n" +
                "            \"pages\": \"1\",\n" +
                "            \"text\": \"Doe\"\n" +
                "        },\n" +
                "        {\n" +
                "            \"fieldName\": \"topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_07[0]\",\n" +
                "            \"pages\": \"1\",\n" +
                "            \"text\": \"987654321\"\n" +
                "        }     \n" +
                "    ]";

        // Asynchronous Job
        String async = "false";

        // Make correctly escaped (encoded) URL
        URL url = null;
        try
        {
            url = new URI(null, query, null).toURL();
        }
        catch (URISyntaxException e)
        {
            e.printStackTrace();
        }

        // Create JSON payload
        String jsonPayload = String.format("{\n" +
                "    \"url\": \"%s\",\n" +
                "    \"async\": %s,\n" +
                "    \"encrypt\": false,\n" +
                "    \"name\": \"f1040-filled\",\n" +
                "    \"fields\": %s"+
                "}", SourceFileUrl, async, fields);

        // Prepare request body
        RequestBody body = RequestBody.create(MediaType.parse("application/json"), jsonPayload);
        // Prepare request
        Request request = new Request.Builder()
                .url(url)
                .addHeader("x-api-key", API_KEY) // (!) Set API Key
                .addHeader("Content-Type", "application/json")
                .post(body)
                .build();

        // Execute request
        Response response = webClient.newCall(request).execute();

        if (response.code() == 200)
        {
            // Parse JSON response
            JsonObject json = new JsonParser().parse(response.body().string()).getAsJsonObject();

            boolean error = json.get("error").getAsBoolean();
            if (!error)
            {
                // Get URL of generated output file
                String resultFileUrl = json.get("url").getAsString();

                // Download the image file
                downloadFile(webClient, resultFileUrl, ResultFile);

                System.out.printf("Generated file saved to \"%s\" file.", ResultFile.toString());
            }
            else
            {
                // Display service reported error
                System.out.println(json.get("message").getAsString());
            }
        }
        else
        {
            // Display request error
            System.out.println(response.code() + " " + response.message());
        }
    }

    public static void downloadFile(OkHttpClient webClient, String url, Path destinationFile) throws IOException
    {
        // Prepare request
        Request request = new Request.Builder()
                .url(url)
                .build();
        // Execute request
        Response response = webClient.newCall(request).execute();

        byte[] fileBytes = response.body().bytes();

        // Save downloaded bytes to file
        OutputStream output = new FileOutputStream(destinationFile.toFile());
        output.write(fileBytes);
        output.flush();
        output.close();

        response.close();
    }
}

<?php

  // Get submitted form data
  $apiKey = $_POST["apiKey"]; // The authentication key (API Key). Get your own by registering at https://app.pdf.co

  // Prepare URL for Fill PDF API call
  $url = "https://api.pdf.co/v1/pdf/edit/add";

  // Prepare requests params
  // See documentation: https://developer.pdf.co
  $parameters = array();

  // Direct URL of source PDF file.
  $parameters["url"] = "bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-form/f1040.pdf";

  // Name of resulting file
  $parameters["name"] = "f1040-form-filled";

  // If large input document, process in async mode by passing true
  $parameters["async"] = false;

  // Field Strings
  $fields =   '[{
      "fieldName": "topmostSubform[0].Page1[0].FilingStatus[0].c1_01[1]",
      "pages": "1",
      "text": "True"
  },
  {
      "fieldName": "topmostSubform[0].Page1[0].f1_02[0]",
      "pages": "1",
      "text": "John A."
  },
  {
      "fieldName": "topmostSubform[0].Page1[0].f1_03[0]",
      "pages": "1",
      "text": "Doe"
  },
  {
      "fieldName": "topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_04[0]",
      "pages": "1",
      "text": "123456789"
  },
  {
      "fieldName": "topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_05[0]",
      "pages": "1",
      "text": "Joan B."
  },
  {
      "fieldName": "topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_05[0]",
      "pages": "1",
      "text": "Joan B."
  },
  {
      "fieldName": "topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_06[0]",
      "pages": "1",
      "text": "Doe"
  },
  {
      "fieldName": "topmostSubform[0].Page1[0].YourSocial_ReadOrderControl[0].f1_07[0]",
      "pages": "1",
      "text": "987654321"
  }]';// JSON string

  // Convert JSON string to Array
  $fieldsArray = json_decode($fields, true);

  $parameters["fields"] = $fieldsArray;

  // Create Json payload
  $data = json_encode($parameters);

  // Create request
  $curl = curl_init();
  curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey, "Content-type: application/json"));
  curl_setopt($curl, CURLOPT_URL, $url);
  curl_setopt($curl, CURLOPT_POST, true);
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($curl, CURLOPT_POSTFIELDS, $data);

  // Execute request
  $result = curl_exec($curl);

  if (curl_errno($curl) == 0)
  {
      $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);

      if ($status_code == 200)
      {
          $json = json_decode($result, true);

          if (!isset($json["error"]) || $json["error"] == false)
          {
              $resultFileUrl = $json["url"];

              // Display link to the file with conversion results
              echo "<div><h2>Result:</h2><a href='" . $resultFileUrl . "' target='_blank'>" . $resultFileUrl . "</a></div>";
          }
          else
          {
              // Display service reported error
              echo "<p>Error: " . $json["message"] . "</p>";
          }
      }
      else
      {
          // Display request error
          echo "<p>Status code: " . $status_code . "</p>";
          echo "<p>" . $result . "</p>";
      }
  }
  else
  {
      // Display CURL error
      echo "Error: " . curl_error($curl);
  }

  // Cleanup
  curl_close($curl);

?>