PDF to HTML

Convert PDF and scanned images into HTML representation with text, fonts, images, vectors, formatting preserved.

Try it live: PDF to HTML → API Tester — send a real request from your browser.

POST /v1/pdf/convert/to/html

Attributes

Attributes are case-sensitive and should be inside JSON for POST request. for example: { "url": "https://example.com/file1.pdf" }

Attribute	Type	Required	Default	Description
url	string	Yes	-	URL to the source file url attribute
callback	string	No	-	The callback URL (or Webhook) used to receive the POST data. see Webhooks & Callbacks. This is only applicable when async is set to true.
httpusername	string	No	-	HTTP auth user name if required to access source URL.
httppassword	string	No	-	HTTP auth password if required to access source URL.
pages	string	No	all pages	Specify page indices as comma-separated values or ranges to process (e.g. “0, 1, 2-” or “1, 2, 3-7”). The first-page index is 0. Use ”!” before a number for inverted page numbers (e.g. “!0” for the last page). If not specified, the default configuration processes all pages. The input must be in string format.
unwrap	boolean	No	false	Unwrap lines into a single line within table cells in provided PDF documents. This is only applicable when lineGrouping is set to 1.
rect	string	No	-	Defines coordinates for extraction. UsePDF Edit Add Helperto get or measure PDF coordinates. The format is {x} {y} {width} {height}.
lang	string	No	eng	Set the language for OCR (text from image) to use for scanned PDF, PNG, and JPG documents input when extracting text. see Language Support. You can also use 2 languages simultaneously like this: eng+deu (any combination).
inline	boolean	No	false	Set to true to return results inside the response. Otherwise, the endpoint will return a URL to the output file generated.
lineGrouping	string	No	-	Controls how lines of text are grouped when extracting data from a PDF. Line grouping within table cells. The available modes are: 1, 2, 3. For more information, see Line Grouping.
password	string	No	-	Password for the PDF file.
async	boolean	No	false	Set async to true for long processes to run in the background, API will then return a jobId which you can use with the Background Job Check endpoint. Also see Webhooks & Callbacks
name	string	No	-	File name for the generated output, the input must be in string format.
expiration	integer	No	60	Set the expiration time for the output link in minutes. After this specified duration, any generated output file(s) will be automatically deleted from PDF.co Temporary Files Storage. The maximum duration for link expiration varies based on your current subscription plan. To store permanent input files (e.g. re-usable images, pdf templates, documents) consider using PDF.co Built-In Files Storage.
profiles	object	No	-	See Profiles for more information.
OCRMode	string	No	Auto	Specifies how OCR (Optical Character Recognition) should process input content, offering various modes to tailor text extraction based on content type such as images, fonts, and vector graphics. For more information, see OCR Extraction Modes.
OCRResolution	integer	No	300	Use this parameter to change the OCR resolution from the default 300 dpi. The range is from 72 to 1200 dpi.
RotationAngle	integer	No	-	Use manual rotation to handle PDFs with vertically drawn text. Normally, OCR automatically detects page rotation in PDFs and extracts text accurately. However, in some cases, the PDF might not have an actual rotated page --- Rather, the text itself is drawn vertically. In such scenarios, auto-detection may fail. You can use this parameter to manually set the page rotation. The available angles are: 0, 1, 2, 3.
LineGroupingMode	string	No	None	Controls line grouping in PDF text extraction. Modes: None (no grouping), GroupByRows (merge rows if all cells align), GroupByColumns (merge cells by column), JoinOrphanedRows (merge single-cell rows to above if no separator).
ConsiderFontColors	boolean	No	false	Controls whether font colors should be considered when detecting table structure and merging text objects during PDF extraction. Set to true to consider font colors.
DetectNewColumnBySpacesRatio	string	No	1.2	Controls how spaces between words are interpreted for column detection in PDF text extraction. It defines the ratio of space width that determines when text should be treated as being in separate columns.
AutoAlignColumnsToHeader	boolean	No	true	Controls how columns are detected and aligned during table extraction from PDF documents. It affects both table structure detection and text extraction with formatting preservation. Set to true to automatically align columns to the header row. When set to true (default), the row with the most columns is used as the header, and all other rows are aligned to this structure --- ideal for well-structured tables. When set to false, columns are analyzed independently across all rows to build the structure, which works better for inconsistent or irregular tables.
OCRImagePreprocessingFilters	object	No	-	Image preprocessing filters for OCR. Refer to OCRImagePreprocessingFilters for usage examples.
.AddGrayscale	boolean	No	false	Converts to grayscale before OCR.
.AddGammaCorrection	array[string (float format)]	No	[“1.4”]	Adds a gamma correction filter.
OCRAutoModeMinExistingTextLength	integer	No	8	The minimum number of characters a page must have to skip OCR. If a page has fewer, OCR will run. For example, if set to 8, OCR is skipped on pages with more than 8 characters.
OptimizeImages	boolean	No	true	Some PDF may have high quality images used in the document and you may need to keep the quality of these images in the output HTML. By default PDF to HTML is optimizing images and you can easily turn it off. See Control Image Quality for more information.
OutputPageWidth	integer	No	1024	Control page width (in pixels) for output HTML. Height is calculated and used according to the original pdf pages ratio. See Control Output Page Width for more information.
AdditionalCssStyles	string	No	“	To inject CSS for layout options in your HTML. Example: #canvas { zoom: 50%; }. Scale the div that contains all generated HTML pages by 50%. See Inject CSS for more information.
saveImages	integer	No	-	Controls whether to save images in the output HTML. See Disable Images for more information.
DataEncryptionAlgorithm	string	No	-	Controls the encryption algorithm used for data encryption. See User-Controlled Encryption for more information. The available algorithms are: AES128, AES192, AES256.
DataEncryptionKey	string	No	-	Controls the encryption key used for data encryption. See User-Controlled Encryption for more information.
DataEncryptionIV	string	No	-	Controls the encryption IV used for data encryption. See User-Controlled Encryption for more information.
DataDecryptionAlgorithm	string	No	-	Controls the decryption algorithm used for data decryption. See User-Controlled Encryption for more information. The available algorithms are: AES128, AES192, AES256.
DataDecryptionKey	string	No	-	Controls the decryption key used for data decryption. See User-Controlled Encryption for more information.
DataDecryptionIV	string	No	-	Controls the decryption IV used for data decryption. See User-Controlled Encryption for more information.

Disable Images

To turn off images output set the following profile:

{
 "profiles": "{ 'saveImages': 0 }"
}

Control Image Quality

Some PDF may have high quality images used in the document and you may need to keep the quality of these images in the output HTML. By default PDF to HTML is optimizing images and you can easily turn it off with the following profile:

{
 "profiles": "{ 'OptimizeImages': false }"
}

Control Output Page Width

Control page width output as follows:

{
 "profiles": "{ 'OutputPageWidth': 2048 }"
}

Inject CSS

To inject CSS for layout options in your HTML use the following:

{
 "profiles": "{ 'AdditionalCssStyles': '#canvas { zoom: 50%; }' }"
}

OCRImagePreprocessingFilters

To set image preprocessing filters, please use:

{
 "profiles": "{
    "ExtractShadowLikeText": false,
    "OCRMode": "Auto",
    "OCRImagePreprocessingFilters.AddGrayscale()": [],
    "OCRImagePreprocessingFilters.AddGammaCorrection()": [
        1.4
    ]
}"
}

Line Grouping Options

• "1": GroupByRows – Each row is checked against the next row to see if they can be grouped together. Rows will only be grouped if all cells in the current row can be grouped with all cells in the next row. Useful when merging related content that spans multiple lines but belongs to the same logical row.
• "2": GroupByColumns – Each cell is checked against the cell below it in the next row to determine if they can be grouped. Cells are grouped within the same column even if others can’t be grouped. Useful for columnar data where content in each column might span multiple lines.
• "3": JoinOrphanedRows – Joins a row with a single cell to the previous row if there is no separator between them. Useful for handling cases with orphaned or misaligned content.

Query parameters

No query parameters accepted.

Responses

Parameter	Type	Description
url	string	Direct URL to the final PDF file stored in S3.
outputLinkValidTill	string	Timestamp indicating when the output link will expire
pageCount	integer	Number of pages in the PDF document.
error	boolean	Indicates whether an error occurred (false means success)
status	string	Status code of the request (200, 404, 500, etc.). For more information, see Response Codes.
name	string	Name of the output file
credits	integer	Number of credits consumed by the request
remainingCredits	integer	Number of credits remaining in the account
duration	integer	Time taken for the operation in milliseconds

Example Payload

To see the request size limits, please refer to the Request Size Limits.

{
  "url": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
  "inline": false,
  "async": false
}

Example Response

To see the main response codes, please refer to the Response Codes page.

{
  "url": "https://pdf-temp-files.s3.amazonaws.com/a7a86e9f29f84f5180624bdec1facfc2/index.html",
  "pageCount": 1,
  "error": false,
  "status": 200,
  "name": "sample.html",
  "remainingCredits": 60110
}

Inconsistent URL Encoding in cURL Output: When using cURL to make API requests, the output JSON may show URL characters encoded as Unicode escape sequences. For example, the ampersand character (&) may appear as \u0026 in the cURL output. This is normal JSON encoding behavior and does not affect the validity of the URL. The URL will function correctly when used, as JSON parsers automatically decode these escape sequences. If you’re parsing the response programmatically, your JSON parser will handle this conversion automatically.

Code Samples

CURL

curl --location --request POST 'https://api.pdf.co/v1/pdf/convert/to/html' \
--header 'x-api-key: *******************' \
--header 'Content-Type: application/json' \
--data-raw '{
"url": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"inline": false,
"async": false
}'

JavaScript/Node.js

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

  // `request` module is required for file upload.
  // Use "npm install request" command to install.
  var request = require("request");

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


  // Source PDF file
  const SourceFile = "./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 HTML file name
  const DestinationFile = "./result.html";
  // Set to `true` to get simplified HTML without CSS. Default is the rich HTML keeping the document design.
  const PlainHtml = false;
  // Set to `true` if your document has the column layout like a newspaper.
  const ColumnLayout = false;


  // 1. RETRIEVE PRESIGNED URL TO UPLOAD FILE.
  getPresignedUrl(API_KEY, SourceFile)
      .then(([uploadUrl, uploadedFileUrl]) => {
          // 2. UPLOAD THE FILE TO CLOUD.
          uploadFile(API_KEY, SourceFile, uploadUrl)
              .then(() => {
                  // 3. CONVERT UPLOADED PDF FILE TO HTML
                  convertPdfToHtml(API_KEY, uploadedFileUrl, Password, Pages, PlainHtml, ColumnLayout, DestinationFile);
              })
              .catch(e => {
                  console.log(e);
              });
      })
      .catch(e => {
          console.log(e);
      });


  function getPresignedUrl(apiKey, localFile) {
      return new Promise(resolve => {
          // Prepare request to `Get Presigned URL` API endpoint
          let queryPath = `/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=${path.basename(SourceFile)}`;
          let reqOptions = {
              host: "api.pdf.co",
              path: encodeURI(queryPath),
              headers: { "x-api-key": API_KEY }
          };
          // Send request
          https.get(reqOptions, (response) => {
              response.on("data", (d) => {
                  let data = JSON.parse(d);
                  if (data.error == false) {
                      // Return presigned url we received
                      resolve([data.presignedUrl, data.url]);
                  }
                  else {
                      // Service reported error
                      console.log("getPresignedUrl(): " + data.message);
                  }
              });
          })
              .on("error", (e) => {
                  // Request error
                  console.log("getPresignedUrl(): " + e);
              });
      });
  }

  function uploadFile(apiKey, localFile, uploadUrl) {
      return new Promise(resolve => {
          fs.readFile(SourceFile, (err, data) => {
              request({
                  method: "PUT",
                  url: uploadUrl,
                  body: data,
                  headers: {
                      "Content-Type": "application/octet-stream"
                  }
              }, (err, res, body) => {
                  if (!err) {
                      resolve();
                  }
                  else {
                      console.log("uploadFile() request error: " + e);
                  }
              });
          });
      });
  }

  function convertPdfToHtml(apiKey, uploadedFileUrl, password, pages, plainHtml, columnLayout, destinationFile) {
      // Prepare request to `PDF To HTML` API endpoint
      var queryPath = `/v1/pdf/convert/to/html`;

      // JSON payload for api request
      var jsonPayload = JSON.stringify({
          name: path.basename(destinationFile), password: password, pages: pages, simple: plainHtml, columns: columnLayout, url: uploadedFileUrl
      });

      var reqOptions = {
          host: "api.pdf.co",
          method: "POST",
          path: 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) => {
              response.setEncoding("utf8");
              // Parse JSON response
              let data = JSON.parse(d);
              if (data.error == false) {
                  // Download HTML file
                  var file = fs.createWriteStream(destinationFile);
                  https.get(data.url, (response2) => {
                      response2.pipe(file)
                          .on("close", () => {
                              console.log(`Generated HTML file saved as "${destinationFile}" file.`);
                          });
                  });
              }
              else {
                  // Service reported error
                  console.log("convertPdfToHtml(): " + data.message);
              }
          });
      })
          .on("error", (e) => {
              // Request error
              console.log("convertPdfToHtml(): " + e);
          });

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

Python

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"

  # Source PDF file
  SourceFile = ".\\sample.pdf"
  # Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
  Pages = ""
  # PDF document password. Leave empty for unprotected documents.
  Password = ""
  # Destination Html file name
  DestinationFile = ".\\result.html"
  # Set to $true to get simplified HTML without CSS. Default is the rich HTML keeping the document design.
  PlainHtml = False
  # Set to $true if your document has the column layout like a newspaper.
  ColumnLayout = False


  def main(args = None):
      uploadedFileUrl = uploadFile(SourceFile)
      if (uploadedFileUrl != None):
          convertPdfToHtml(uploadedFileUrl, DestinationFile)


  def convertPdfToHtml(uploadedFileUrl, destinationFile):
      """Converts PDF To Html using PDF.co Web API"""

      # Prepare requests params as JSON
      # See documentation: https://docs.pdf.co/api-reference/pdf-to-html
      parameters = {}
      parameters["name"] = os.path.basename(destinationFile)
      parameters["password"] = Password
      parameters["pages"] = Pages
      parameters["simple"] = PlainHtml
      parameters["columns"] = ColumnLayout
      parameters["url"] = uploadedFileUrl

      # Prepare URL for 'PDF To Html' API request
      url = "{}/pdf/convert/to/html".format(BASE_URL)

      # Execute request and get response as JSON
      response = requests.post(url, data=parameters, headers={ "x-api-key": API_KEY })
      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}")


  def uploadFile(fileName):
      """Uploads file to the cloud"""

      # 1. RETRIEVE PRESIGNED URL TO UPLOAD FILE.

      # Prepare URL for 'Get Presigned URL' API request
      url = "{}/file/upload/get-presigned-url?contenttype=application/octet-stream&name={}".format(
          BASE_URL, os.path.basename(fileName))

      # Execute request and get response as JSON
      response = requests.get(url, headers={ "x-api-key": API_KEY })
      if (response.status_code == 200):
          json = response.json()

          if json["error"] == False:
              # URL to use for file upload
              uploadUrl = json["presignedUrl"]
              # URL for future reference
              uploadedFileUrl = json["url"]

              # 2. UPLOAD FILE TO CLOUD.
              with open(fileName, 'rb') as file:
                  requests.put(uploadUrl, data=file, headers={ "x-api-key": API_KEY, "content-type": "application/octet-stream" })

              return uploadedFileUrl
          else:
              # Show service reported error
              print(json["message"])
      else:
          print(f"Request error: {response.status_code} {response.reason}")

      return None


  if __name__ == '__main__':
      main()

C#

using System;
  using System.Collections.Generic;
  using System.IO;
  using System.Net;
  using Newtonsoft.Json;
  using Newtonsoft.Json.Linq;

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

          // Source PDF file
          const string SourceFile = @".\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 HTML file name
          const string DestinationFile = @".\result.html";
          // Set to `true` to get simplified HTML without CSS. Default is the rich HTML keeping the document design.
          const bool PlainHtml = false;
          // Set to `true` if your document has the column layout like a newspaper.
          const bool ColumnLayout = false;

          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);

              // 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
              // * If you already have the direct file URL, skip to the step 3.

              // Prepare URL for `Get Presigned URL` API call
              string query = Uri.EscapeUriString(string.Format(
                  "https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name={0}",
                  Path.GetFileName(SourceFile)));

              try
              {
                  // Execute request
                  string response = webClient.DownloadString(query);

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

                  if (json["error"].ToObject<bool>() == false)
                  {
                      // Get URL to use for the file upload
                      string uploadUrl = json["presignedUrl"].ToString();
                      string uploadedFileUrl = json["url"].ToString();

                      // 2. UPLOAD THE FILE TO CLOUD.

                      webClient.Headers.Add("content-type", "application/octet-stream");
                      webClient.UploadFile(uploadUrl, "PUT", SourceFile); // You can use UploadData() instead if your file is byte[] or Stream
                      webClient.Headers.Remove("content-type");

                      // 3. CONVERT UPLOADED PDF FILE TO HTML

                      // URL for `PDF To HTML` API call
                      var url = "https://api.pdf.co/v1/pdf/convert/to/html";

                      // Prepare requests params as JSON
                      Dictionary<string, object> parameters = new Dictionary<string, object>();
                      parameters.Add("name", Path.GetFileName(DestinationFile));
                      parameters.Add("password", Password);
                      parameters.Add("pages", Pages);
                      parameters.Add("simple", PlainHtml);
                      parameters.Add("columns", ColumnLayout);
                      parameters.Add("url", uploadedFileUrl);

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

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

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

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

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

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

              webClient.Dispose();

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

Java

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 = "***********************************";

      // Source PDF file
      final static Path SourceFile = Paths.get(".\\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 HTML file name
      final static Path DestinationFile = Paths.get(".\\result.html");
      // Set to `true` to get simplified HTML without CSS. Default is the rich HTML keeping the document design.
      final static boolean PlainHtml = false;
      // Set to `true` if your document has the column layout like a newspaper.
      final static boolean ColumnLayout = false;

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

          // 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
          // * If you already have a direct file URL, skip to the step 3.

          // Prepare URL for `Get Presigned URL` API call
          String query = String.format(
                  "https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=%s",
                  SourceFile.getFileName());

          // Prepare request
          Request request = new Request.Builder()
                  .url(query)
                  .addHeader("x-api-key", API_KEY) // (!) Set API Key
                  .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 to use for the file upload
                  String uploadUrl = json.get("presignedUrl").getAsString();
                  // Get URL of uploaded file to use with later API calls
                  String uploadedFileUrl = json.get("url").getAsString();

                  // 2. UPLOAD THE FILE TO CLOUD.

                  if (uploadFile(webClient, API_KEY, uploadUrl, SourceFile))
                  {
                      // 3. CONVERT UPLOADED PDF FILE TO HTML

                      PdfToHtml(webClient, API_KEY, DestinationFile, Password, Pages, PlainHtml, ColumnLayout, uploadedFileUrl);
                  }
              }
              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 PdfToHtml(OkHttpClient webClient, String apiKey, Path destinationFile,
          String password, String pages, boolean plainHtml, boolean columnLayout, String uploadedFileUrl) throws IOException
      {
          // Prepare URL for `PDF To HTML` API call
          String query = "https://api.pdf.co/v1/pdf/convert/to/html";

          // 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\", \"password\": \"%s\", \"pages\": \"%s\", \"simple\": \"%s\", \"columns\": \"%s\", \"url\": \"%s\"}",
                  destinationFile.getFileName(),
                  password,
                  pages,
                  plainHtml,
                  columnLayout,
                  uploadedFileUrl);

          // 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 HTML file
                  String resultFileUrl = json.get("url").getAsString();

                  // Download HTML file
                  downloadFile(webClient, resultFileUrl, destinationFile.toFile());

                  System.out.printf("Generated HTML file saved as \"%s\" file.", destinationFile.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 boolean uploadFile(OkHttpClient webClient, String apiKey, String url, Path sourceFile) throws IOException
      {
          // Prepare request body
          RequestBody body = RequestBody.create(MediaType.parse("application/octet-stream"), sourceFile.toFile());

          // Prepare request
          Request request = new Request.Builder()
                  .url(url)
                  .addHeader("x-api-key", apiKey) // (!) Set API Key
                  .addHeader("content-type", "application/octet-stream")
                  .put(body)
                  .build();

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

          return (response.code() == 200);
      }

      public static void downloadFile(OkHttpClient webClient, String url, File 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);
          output.write(fileBytes);
          output.flush();
          output.close();

          response.close();
      }
  }

PHP

<!DOCTYPE html>
  <html lang="en">
  <head>
      <meta charset="UTF-8">
      <title>PDF To HTML Extraction Results</title>
  </head>
  <body>

  <?php
  // Note: If you have input files large than 200kb we highly recommend to check "async" mode example.

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

  $pages = "";
  if(isset($_POST["pages"])){
      $pages = $_POST["pages"];
  }

  $plainHtml = false;
  if(isset($_POST["plainHtml"])){
      $plainHtml = $_POST["plainHtml"];
  }

  $columnLayout = false;
  if(isset($_POST["columnLayout"])){
      $columnLayout = $_POST["columnLayout"];
  }

  // 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
  // * If you already have the direct PDF file link, go to the step 3.

  // Create URL
  $url = "https://api.pdf.co/v1/file/upload/get-presigned-url" .
      "?name=" . urlencode($_FILES["file"]["name"]) .
      "&contenttype=application/octet-stream";

  // Create request
  $curl = curl_init();
  curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey));
  curl_setopt($curl, CURLOPT_URL, $url);
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
  // 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);

          // Get URL to use for the file upload
          $uploadFileUrl = $json["presignedUrl"];
          // Get URL of uploaded file to use with later API calls
          $uploadedFileUrl = $json["url"];

          // 2. UPLOAD THE FILE TO CLOUD.

          $localFile = $_FILES["file"]["tmp_name"];
          $fileHandle = fopen($localFile, "r");

          curl_setopt($curl, CURLOPT_URL, $uploadFileUrl);
          curl_setopt($curl, CURLOPT_HTTPHEADER, array("content-type: application/octet-stream"));
          curl_setopt($curl, CURLOPT_PUT, true);
          curl_setopt($curl, CURLOPT_INFILE, $fileHandle);
          curl_setopt($curl, CURLOPT_INFILESIZE, filesize($localFile));

          // Execute request
          curl_exec($curl);

          fclose($fileHandle);

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

              if ($status_code == 200)
              {
                  // 3. CONVERT UPLOADED PDF FILE TO HTML

                  PdfToHtml($apiKey, $uploadedFileUrl, $pages, $plainHtml, $columnLayout);
              }
              else
              {
                  // Display request error
                  echo "<p>Status code: " . $status_code . "</p>";
                  echo "<p>" . $result . "</p>";
              }
          }
          else
          {
              // Display CURL error
              echo "Error: " . curl_error($curl);
          }
      }
      else
      {
          // Display service reported error
          echo "<p>Status code: " . $status_code . "</p>";
          echo "<p>" . $result . "</p>";
      }

      curl_close($curl);
  }
  else
  {
      // Display CURL error
      echo "Error: " . curl_error($curl);
  }

  function PdfToHtml($apiKey, $uploadedFileUrl, $pages, $plainHtml, $columnLayout)
  {
      // Create URL
      $url = "https://api.pdf.co/v1/pdf/convert/to/html";

      // Prepare requests params
      $parameters = array();
      $parameters["url"] = $uploadedFileUrl;
      $parameters["pages"] = $pages;

      if($plainHtml){
          $parameters["simple"] = $plainHtml;
      }

      if($columnLayout){
          $parameters["columns"] = $columnLayout;
      }

      // 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>Conversion 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);
  }

  ?>

  </body>
  </html>