PDF.co Web API – PDF To HTML API – JavaScript – Convert PDF To HTML From File (Node.js)

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app.js

      
/*jshint esversion: 6 */

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/documentation/api
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';

// Prepare URL for `PDF To HTML` API endpoint
var query = `https://api.pdf.co/v1/pdf/convert/to/html`;
let reqOptions = {
    uri: query,
    headers: { "x-api-key": API_KEY },
    formData: {
        name: path.basename(DestinationFile),
        password: Password,
        pages: Pages,
        simple: PlainHtml,
        columns: ColumnLayout,
        file: fs.createReadStream(SourceFile)
    }
};

// Send request
request.post(reqOptions, function (error, response, body) {
    if (error) {
        return console.error("Error: ", error);
    }

    // Parse JSON response
    let data = JSON.parse(body);
    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("Error: " + data.message);
    }
});
    

package.json

      
{
  "name": "test",
  "version": "1.0.0",
  "description": "PDF.co",
  "main": "app.js",
  "scripts": {
  },
  "keywords": [
    "pdf.co",
    "web",
    "api",
    "bytescout",
    "api"
  ],
  "author": "ByteScout & PDF.co",
  "license": "ISC",
  "dependencies": {
    "request": "^2.88.2"
  }
}

    

Output

At the start of this program, we’re referencing the package dependencies such as https, path, fs, as well as requesting the external package dependecies (request)

Next logical step in the program is to prepare all the necessary request data for the PDF.co endpoint. We’re providing placeholders for the input source file (SourceFile), Pages which we’re considering converting to HTML (Pages), Destination file location (DestinationFile), etc. We’re also specifying the additional parameters like PlainHtml that are useful when we want to output HTML without any stylesheet(CSS), ColumnLayout when we have the input PDF in the column structure, etc.

Now that all the data preparations are done, we’re ready to invoke the PDF.co request using /v1/pdf/convert/to/html endpoint. All input data are passed in as form data collection. In order to pass the source PDF, we’re creating the data stream and passing it to the file parameter. The PDF.co API key x-api-key is passed in the header for the request authentication purposes.

In the request output, we have the parameter named URL that contains the link to downlaod a generated HTML document as shown in the above output image.

PDF.co endpoint for HTML conversion provides many parameters by which we can achive response as per our requirement. Some of the request parameters by which we can do the additional settings are as below.

Please refer to the PDF.co API documentation at here for more details.

Please try this code in your machine to get the most out of this sample. Thank you for reading!

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