How to Add Digital Signature in PDF using Laravel?

By Hardik Savani November 5, 2023 Category : Laravel

Hi Friends,

This tutorial shows you laravel digital signature pdf. we will help you to give an example of laravel add signature to pdf. I would like to share with you how to add digital signature in pdf using laravel. This article goes in detailed on electronic signature laravel pdf.

In this illustration, I will demonstrate the process of incorporating a digital signature into a PDF file using Laravel DomPDF. We will establish a basic form that includes a digital signature pad employing the jQuery Signature Library. After the user adds their signature, they can submit the form and obtain a PDF file containing their signature. Following a few simple steps will allow you to complete this example.

you can use this example with laravel 6, laravel 7, laravel 8, laravel 9 and laravel 10 version.

Preview:

Step 1: Install Laravel App

To kickstart this tutorial, let's initiate the process by setting up a fresh Laravel application. If you've already established your project, feel free to bypass this step.

composer create-project laravel/laravel example-app

Step 2: Install Dompdf Library

During this step, it is essential to install the barryvdh/laravel-dompdf Composer package by executing the subsequent command:

composer require barryvdh/laravel-dompdf

Step 3: Add Routes

In this particular step, we must include two routes: one for creating a form with a digital signature pad and another for generating a PDF file. To accomplish this, please open your route file and insert the following routes.

routes/web.php

<?php

use Illuminate\Support\Facades\Route;

use App\Http\Controllers\SignaturePDFController;

/*

|--------------------------------------------------------------------------

| Web Routes

|--------------------------------------------------------------------------

|

| Here is where you can register web routes for your application. These

| routes are loaded by the RouteServiceProvider within a group which

| contains the "web" middleware group. Now create something great!

|

*/

Route::get('signature-pdf', [SignaturePDFController::class, 'index']);

Route::post('signature-pdf', [SignaturePDFController::class, 'upload'])->name('signature.upload');

Step 4: Create Controller

If you don't already have a SignaturePDFController, you should create a new controller named SignaturePDFController. Inside this file, we'll define three methods: index(), upload(), and uploadSignature(). Please add the following content to your controller file:

app/Http/Controllers/SignaturePDFController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use Barryvdh\DomPDF\Facade\Pdf;

class SignaturePDFController extends Controller

{

/**

* Write code on Method

*

* @return response()

*/

public function index()

{

return view('signaturePDF');

}

/**

* Write code on Method

*

* @return response()

*/

public function upload(Request $request)

{

$data['image'] = $this->uploadSignature($request->signed);

$pdf = Pdf::loadView('signaturePDFView', $data);

return $pdf->download('signature.pdf');

}

/**

* Write code on Method

*

* @return response()

*/

public function uploadSignature($signed)

{

$folderPath = public_path('upload/');

$image_parts = explode(";base64,", $signed);

$image_type_aux = explode("image/", $image_parts[0]);

$image_type = $image_type_aux[1];

$image_base64 = base64_decode($image_parts[1]);

$file = $folderPath . uniqid() . '.'.$image_type;

file_put_contents($file, $image_base64);

return $file;

}

}

Step 5: Create View File

In the final step, we need to create two view files: "signaturePDF.blade.php" for generating the view with the signature pad and "signaturePDFView.blade.php" for the PDF file. To get started, create the "signaturePad" file and insert the following code:

resources/view/signaturePDF.blade.php

<html>

<head>

<title>Laravel Signature Pad Tutorial Example - ItSolutionStuff.com </title>

<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/5.3.1/css/bootstrap.css">

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>

<link type="text/css" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/themes/south-street/jquery-ui.css" rel="stylesheet">

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>

<script type="text/javascript" src="http://keith-wood.name/js/jquery.signature.js"></script>

<link rel="stylesheet" type="text/css" href="http://keith-wood.name/css/jquery.signature.css">

<style>

.kbw-signature { width: 300px; height: 200px;}

#sig canvas{

width: 300px;

height: 200px;

border: 1px solid #a1a1a1;

}

</style>

</head>

<body>

<div class="container">

<div class="row">

<div class="col-md-10 offset-md-1 mt-5">

<div class="card">

<div class="card-header">

<h5>Laravel Signature Pad Tutorial Example - ItSolutionStuff.com </h5>

</div>

<div class="card-body">

@if ($message = Session::get('success'))

<div class="alert alert-success alert-dismissible">

<button type="button" class="close" data-dismiss="alert">×</button>

<strong>{{ $message }}</strong>

</div>

@endif

<form method="POST" action="{{ route('signature.upload') }}">

@csrf

<p>Dear Boss,

<br/><br/>

I am writing to formally resign from my position as [Your Position] at [IT Company Name], with my last working day being [Last Working Day], in accordance with the notice period stipulated in my employment contract.

<br/><br/>

I want to express my sincere gratitude for the opportunities and experiences I've had during my time at [IT Company Name]. It has been an incredible journey, and I have had the privilege of working alongside an outstanding team of professionals.

<br/><br/>

After careful consideration, I have decided to take a new direction in my career. This decision wasn't easy, as I have cherished my time here and the projects we've accomplished together. I am immensely proud of our collective achievements.

<br/><br/>

During my notice period, I am committed to ensuring a seamless transition. I am more than willing to assist in the transfer of my responsibilities, provide training to my successor, and complete any pending projects. Please let me know how I can best contribute to this process.

<br/><br/>

Sincerely,

Hardik Savani

</p>

<div class="col-md-12">

<strong>Signature:</strong>

<br/>

<div id="sig" ></div>

<br/>

<button id="clear" class="btn btn-danger btn-sm mt-1">Clear Signature</button>

<textarea id="signature64" name="signed" style="display: none"></textarea>

</div>

<br/>

<div class="col-md-12 text-center">

<button class="btn btn-success">Submit & Download PDF</button>

</div>

</form>

</div>

</div>

</div>

</div>

</div>

<script type="text/javascript">

var sig = $('#sig').signature({syncField: '#signature64', syncFormat: 'PNG'});

$('#clear').click(function(e) {

e.preventDefault();

sig.signature('clear');

$("#signature64").val('');

});

</script>

</body>

</html>

resources/view/signaturePDFView.blade.php

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<meta name="viewport" content="width=device-width, initial-scale=1">

<title></title>

</head>

<body>

<p>Dear Boss,

<br/><br/>

I am writing to formally resign from my position as [Your Position] at [IT Company Name], with my last working day being [Last Working Day], in accordance with the notice period stipulated in my employment contract.

<br/><br/>

I want to express my sincere gratitude for the opportunities and experiences I've had during my time at [IT Company Name]. It has been an incredible journey, and I have had the privilege of working alongside an outstanding team of professionals.

<br/><br/>

After careful consideration, I have decided to take a new direction in my career. This decision wasn't easy, as I have cherished my time here and the projects we've accomplished together. I am immensely proud of our collective achievements.

<br/><br/>

During my notice period, I am committed to ensuring a seamless transition. I am more than willing to assist in the transfer of my responsibilities, provide training to my successor, and complete any pending projects. Please let me know how I can best contribute to this process.

<br/><br/>

Sincerely,

<br/>

Hardik Savani

<br/>

<br/>

<img src="{{ $image }}" style="border: 1px solid #a1a1a1;">

</p>

</body>

</html>

Now you can run project using following command:

php artisan serve

let's check from bellow url:

localhost:8000/signature-pdf

PDF File Preview:

I hope it can help you...

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