PDF.co Web API - Add Text And Images To PDF - JavaScript - Add Text to Existing PDF (Node.js)

printable version:
PDF-co-Web-API-JavaScript-Add-Text-to-Existing-PDF-(Node-js).pdf

How to add text and images to PDF in JavaScript and PDF.co Web API

This tutorial will show how to add text and images to PDF in JavaScript

These sample source codes on this page below are demonstrating how to add text and images to PDF in JavaScript. PDF.co Web API can add text and images to PDF. It can be used from JavaScript. PDF.co Web API is the flexible Web API that includes full set of functions from e-signature requests to data extraction, OCR, images recognition, pdf splitting and pdf splitting. Can also generate barcodes and read barcodes from images, scans and pdf.

This code snippet below for PDF.co Web API works best when you need to quickly add text and images to PDF in your JavaScript application. Just copy and paste the code into your JavaScript application’s code and follow the instruction. Use of PDF.co Web API in JavaScript is also explained in the documentation included along with the product.

Our website provides trial version of PDF.co Web API for free. It also includes documentation and source code samples.

On-demand (REST Web API) version:
Web API (on-demand version)

On-premise offline SDK for Windows:
60 Day Free Trial (on-premise)

AddTextToExistingPDF.js

      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/documentation/api
const API_KEY = "***********************************";

// Direct URL of source PDF file.
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?name=${path.basename(DestinationFile)}&password=${Password}&pages=${Pages}&url=${SourceFileUrl}&type=${Type}&x=${X}&y=${Y}&text=${Text}&fontname=${FontName}&size=${FontSize}&color=${Color}`;
var reqOptions = {
    host: "api.pdf.co",
    path: encodeURI(queryPath),
    headers: {
        "x-api-key": API_KEY
    }
};
// Send request
https.get(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);
});