PDF4.dev - Node Client

This is the officially supported node.js library for using our PDF4.dev API

You can sign up for a PDF4.dev account at https://pdf4.dev. Register now and receive 50 credits for free. ❤️

✨ Features

Create PDF:

• Create from HTML Code.
• Create from Website URL.
• Create from Documents (doc, docx, ppt, pptx, xml, xmlx and odt, ods, odp).
• Create from Images.
• Create or add elements to a PDF using a JSON.

PDF Utilities:

• Merge multiples files in one file.
• Reorganize (Remove or change pages order, split in multiple files, etc).
• Protect - Unprotect.
• Fill and List fields.
• Repair.

Create Images:

• Create from HTML Code.
• Create from Website URL (Screenshot).
• Create from a PDF file.

QR - Barcodes:

• Read QR - Barcodes from a PDF or an Image file.
• Create QR - Barcodes.

Create Documents:

• Create from a PDF file (doc, docx).

🚀 Quickstart

1. Installing the client library

npm install --save pdf4dev-node-client

2. Setting the API Key

2.1 Get an API Key:

• Login into the dashboard panel.
• Navigate to API Keys.
• Press Create new API Key and follow the steps.

2.2 Configuration:

const { PDF4dev } = require("pdf4dev-node-client");

const pdf4dev = new PDF4dev({
  apiKey: "your-api-key",
});

💡 You can also set your API key using the PDF4DEV_API_KEY environment variable. It'll look better!

3. Make your first operation

const html = "<h1>Hello World</h1>";

// HTML to PDF
const operation = await pdf4dev.htmlToPdf(html);

// Save to a file
await operation.save("result.pdf");

Also you can make something like this:

pdf4dev.htmlToPdf(html).then((operation) => {
  operation.save("result.pdf").then(() => {
    console.log("Success");
  });
});

🎉 That's all! You can check for more below or [here](https://github.com/pdf4dev/pdf4dev-node-client/tree/main/examples.

📥 Downloading the files

When you have an operation you'll be able to:

// Download and save the file:
await operation.save("result.pdf");

// Or get a buffer:
const buffer = await operation.download();

Sometimes you'll get more than one file (For example, when you convert a PDF with multiple pages to images). In those cases you can:

// Download and save files in a folder:
await operation.saveAll("/my-folder");

// Or get an array of buffers:
const buffer = await operation.downloadAll();

📤 Uploading your local files

We use our Storage API to upload your local files to the server. It works transparent, for example:

// The file is on internet, so we'll use the specified URL directly:
await pdf4dev.barcodeReader("https://your-address.com/remote-file.pdf");

// The file is local, we'll upload it:
await pdf4dev.barcodeReader("./local-file.pdf");

// If you want you can use a buffer, we'll upload it too:
const buffer = fs.readFileSync("./local-file.pdf");
await pdf4dev.barcodeReader(buffer);

✨ Examples

💡 You can find these examples and more within the project right here.

HTML to PDF

const html = "<h1>Hello {{name}}</h1>";

const operation = await pdf4dev.htmlToPdf(html, {
  template: {
    name: "World",
  },
});

await operation.save("./output/html-to-pdf.pdf");

WEB to PDF

const url = "https://www.wikipedia.org/";
const operation = await pdf4dev.webToPdf(url);

await operation.save("./output/web-to-pdf.pdf");

Document to PDF

const file = fs.readFileSync("./files/document.docx");
const operation = await pdf4dev.documentToPdf(file);

await operation.save("./output/document-to-pdf.pdf");

Read QR - Barcodes

const file = fs.readFileSync("./files/barcodes.pdf");
const operation = await pdf4dev.barcodeReader(file);

for (let code of operation.output.barcodes) {
  console.log(code.value);
}

WEB To Image (Screenshot)

const url = "https://en.wikipedia.org/wiki/Madrid";

const operation = await pdf4dev.webToImage(url, {
  output: IMAGE_FORMAT.PNG,
  options: {
    fullPage: true,
  },
});

💡 Check out for more examples here.

💣 Advanced options

Asynchronous operations

It's possible to use this library to make asynchronous operations.

You can specified the callback URL when you create the instance:

const pdf4dev = new PDF4dev({
  callbackUrl: "https://url-to-your-server/",
});

Keep in mind that you won't be able to download the generated files:

const operation = await pdf4dev.htmlToPdf("<h1>Hello World</h1>");

// Oops! You'll get an error:
await operation.save("result.pdf");

However, If you want you can use this library to handle the received request from our API:

const { Operation } = require("pdf4dev-client");

const handler = async (req, res, next) => {
  const operation = new Operation(req.body);
  await operation.save("result.pdf");
};