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Converting PDF files to Word documents is essential for modern web applications focused on document management and editing. Using JavaScript and React, developers can easily integrate this functionality with libraries like Spire.PDF for JavaScript. This guide will walk you through implementing a PDF-to-Word conversion feature in a React application, showing how to load files, configure settings, and enable users to download their converted documents effortlessly.
Install Spire.PDF for JavaScript
To get started with converting PDF to Word with JavaScript in a React application, you can either download Spire.PDF for JavaScript from our website or install it via npm with the following command:
npm i spire.office
The downloaded product package integrates Spire.Doc for JavaScript, Spire.XLS for JavaScript, Spire.PDF for JavaScript, and Spire.Presentation for JavaScript. To use Spire.PDF for JavaScript functionality, you need to copy the corresponding files (spire.pdf.js, Spire.Pdf.Wasm.zip, spire.common.js, Spire.Common.Wasm.zip, and the _framework folder) to the public folder of your project. Additionally, to ensure proper text rendering, font files can be added to a custom path of your choice. In the following example, the font addition path is: public\static\font.
For more details, refer to the documentation: How to Integrate Spire.PDF for JavaScript in a React Project
Convert PDF to Word Using PdfToDocConverter Class
The PdfToDocConverter class from Spire.PDF for JavaScript facilitates the conversion of PDF files to Word documents. It includes the DocxOptions property, allowing developers to customize conversion settings, including document properties. The conversion is performed using the SaveToDocx() method.
Steps to convert PDF to Word using the PdfToDocConverter class in React:
- Load the necessary font files and input PDF file into the virtual file system (VFS).
- Instantiate a PdfToDocConverter object using the wasmModule.PdfToDocConverter() method, passing the PDF file path.
- Customize the generated Word file's properties using the DocxOptions property.
- Use the SaveToDocx() method to convert the PDF document.
- Trigger the download of the resulting Word file.
- JavaScript
import React, { useState, useEffect } from 'react';
function App() {
const [wasmModule, setWasmModule] = useState(null);
useEffect(() => {
(async () => {
try {
const publicUrl = process.env.PUBLIC_URL || '';
const spireModule = await import(/* webpackIgnore: true */ `${publicUrl}/spire.pdf.js`);
const rawModule = spireModule.default || spireModule;
window.wasmModule = typeof rawModule === 'function'
? await rawModule({ locateFile: p => p.endsWith('.wasm') ? `${publicUrl}/${p}` : p })
: rawModule;
setWasmModule(window.wasmModule);
} catch (error) {
console.error('Failed to load spire.pdf.js:', error);
}
})();
}, []);
const ConvertPdfToWord= async () => {
// Get WASM module
const wasmModule = window.wasmModule.spirepdf;
if (wasmModule) {
// Load font file to virtual file system (VFS)
await window.spire.FetchFileToVFS("arial.ttf","/Library/Fonts/",`${process.env.PUBLIC_URL}static/font/`);
// PDF file name to convert
let inputFileName = "ToDocx.pdf";
// Load PDF file to virtual file system (VFS)
await window.spire.FetchFileToVFS(inputFileName, "", `${process.env.PUBLIC_URL}static/data/`);
// Create a PdfToDocConverter object
let converter =new wasmModule.PdfToDocConverter({filePath: inputFileName});
// Set document properties of the generated Word file
converter.DocxOptions.Subject = "Convert PDF to Word";
converter.DocxOptions.Authors = "E-ICEBLUE"
// Define the output file name
const outputFileName = "ToWord.docx";
// Convert PDF as a Docx file
converter.SaveToDocx({fileName: outputFileName});
// Read the saved file and convert to a Blob object
const modifiedFileArray = window.dotnetRuntime.Module.FS.readFile(outputFileName);
const modifiedFile = new Blob([modifiedFileArray], { type: "msword" });
// Create a URL for the Blob
const url = URL.createObjectURL(modifiedFile);
// Create an anchor element to trigger the download
const a = document.createElement('a');
a.href = url;
a.download = outputFileName ;
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
}
};
return (
<div style={{ textAlign: 'center', height: '300px' }}>
<h1>Convert PDF to Word in React</h1>
<button onClick={ConvertPdfToWord}>
Convert
</button>
</div>
);
}
export default App;
Run the code to launch the React app at localhost:3000. Click "Convert," and a "Save As" window will appear, prompting you to save the output file in your chosen folder.
Below is a screenshot showing the input PDF file and the output Word file:
Convert PDF to Word Using PdfDocument Class
To convert PDF to Word, you can also use the PdfDocument class. This class allows developers to load an existing PDF document, make modifications, and save it as a Word file. This feature is particularly useful for users who need to edit or enhance their PDFs before conversion.
Steps to convert PDF to Word Using the PdfDocument class in React:
- Load the necessary font files and input PDF file into the virtual file system (VFS).
- Create a PdfDocument object using the wasmModule.PdfDocument() method
- Load the PDF document using the PdfDocument.LoadFromFile() method.
- Convert the PDF document to a Word file using the PdfDocument.SaveToFile() method.
- Trigger the download of the resulting Word file.
- JavaScript
import React, { useState, useEffect } from 'react';
function App() {
const [wasmModule, setWasmModule] = useState(null);
useEffect(() => {
(async () => {
try {
const publicUrl = process.env.PUBLIC_URL || '';
const spireModule = await import(/* webpackIgnore: true */ `${publicUrl}/spire.pdf.js`);
const rawModule = spireModule.default || spireModule;
window.wasmModule = typeof rawModule === 'function'
? await rawModule({ locateFile: p => p.endsWith('.wasm') ? `${publicUrl}/${p}` : p })
: rawModule;
setWasmModule(window.wasmModule);
} catch (error) {
console.error('Failed to load spire.pdf.js:', error);
}
})();
}, []);
const ConvertPdfToWord= async () => {
// Get WASM module
const wasmModule = window.wasmModule.spirepdf;
if (wasmModule) {
// Load font file to virtual file system (VFS)
await window.spire.FetchFileToVFS("arial.ttf","/Library/Fonts/",`${process.env.PUBLIC_URL}static/font/`);
// PDF file name to convert
let inputFileName = "ToDocx.pdf";
// Load PDF file to virtual file system (VFS)
await window.spire.FetchFileToVFS(inputFileName, "", `${process.env.PUBLIC_URL}static/data/`);
// Create a PdfDocument object
let doc =new wasmModule.PdfDocument();
// Load the PDF file
doc.LoadFromFile(inputFileName);
// Define the output file name
const outputFileName = "ToWord.docx";
// Convert PDF as a Docx file
doc.SaveToFile({fileName: outputFileName,fileFormat: wasmModule.FileFormat.DOCX});
// Read the saved file and convert to a Blob object
const modifiedFileArray = window.dotnetRuntime.Module.FS.readFile(outputFileName);
const modifiedFile = new Blob([modifiedFileArray], { type: "msword" });
// Create a URL for the Blob
const url = URL.createObjectURL(modifiedFile);
// Create an anchor element to trigger the download
const a = document.createElement('a');
a.href = url;
a.download = outputFileName ;
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
}
};
return (
<div style={{ textAlign: 'center', height: '300px' }}>
<h1>Convert PDF to Word in React</h1>
<button onClick={ConvertPdfToWord}>
Convert
</button>
</div>
);
}
export default App;
Get a Free License
To fully experience the capabilities of Spire.PDF for JavaScript without any evaluation limitations, you can request a free 30-day trial license.
Python: Check if a PDF is Password Protected and Determine the Correct Password
2025-03-19 01:06:07 Written by KoohjiWhen working with PDF files, you may encounter documents that are password protected. This means that you cannot view or edit the content without entering the correct password. Understanding how to check if a PDF is password protected and determining the correct password is essential for accessing important information. In this guide, we will introduce how to check if a PDF is password protected and determine the correct password using Python and the Spire.PDF for Python library.
Install Spire.PDF for Python
This scenario requires Spire.PDF for Python and plum-dispatch v1.7.4. They can be easily installed in your Windows through the following pip command.
pip install Spire.PDF
If you are unsure how to install, please refer to this tutorial: How to Install Spire.PDF for Python on Windows
Check if a PDF is Password Protected
Spire.PDF for Python offers the PdfDocument.IsPasswordProtected(fileName: str) method to check if a PDF file is password protected. The detailed steps are as follows.
- Specify the input and output file paths.
- Check if the PDF file is password protected or not using the PdfDocument.IsPasswordProtected() method.
- Save the result to a text file.
- Python
from spire.pdf import *
# Specify the input and output file paths
inputFile = "Secured.pdf"
outputFile = "CheckPasswordProtection.txt"
# Check if the input PDF file is password protected
isProtected = PdfDocument.IsPasswordProtected(inputFile)
# Write the result into a text file
with open(outputFile, "w") as fp:
fp.write("The PDF is " + ("password protected!" if isProtected else "not password protected!"))
Determine the Correct Password for a PDF
While Spire.PDF for Python does not provide a direct method to check if a password is correct, you can achieve this by attempting to load the PDF with the password and catching exceptions. If the password is incorrect, an exception will be thrown. The detailed steps are as follows.
- Specify the input and output file paths.
- Create a list of potential passwords to test.
- Iterate through the list and load the PDF with each password using the PdfDocument.LoadFromFile(filename: str, password: str) method.
- If no exception is thrown, the password is correct. Otherwise, the password is incorrect.
- Save the results to a text file.
- Python
from spire.pdf import *
# Specify the input and output file paths
inputFile = "Secured.pdf"
outputFile = "DetermineCorrectPassword.txt"
# Create a list of potential passwords to test
passwords = ["password1", "password2", "password3", "test", "sample"]
# Create a text file to store the results
with open(outputFile, "w") as fp:
for value in passwords:
try:
# Load the PDF with the current password
doc = PdfDocument()
doc.LoadFromFile(inputFile, value)
# If successful, write that the password is correct
fp.write(f'Password "{value}" is correct\n')
except SpireException:
# If an exception occurs, write that the password is not correct
fp.write(f'Password "{value}" is not correct\n')
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
Verifying digital signatures in a PDF is essential for ensuring the authenticity and integrity of electronically signed documents. It confirms that the signature is valid and that the document has not been altered since signing. Additionally, extracting signature images from a PDF allows you to retrieve and save the visual representation of a signature, making it easier to verify and archive for legal or record-keeping purposes. In this article, we will demonstrate how to verify and extract digital signatures in PDF in Python using Spire.PDF for Python.
- Verify Digital Signatures in PDF in Python
- Detect Whether a Signed PDF Has Been Modified in Python
- Extract Signature Images from PDF in Python
Install Spire.PDF for Python
This scenario requires Spire.PDF for Python and plum-dispatch v1.7.4. They can be easily installed in your Windows through the following pip command.
pip install Spire.PDF
If you are unsure how to install, please refer to this tutorial: How to Install Spire.PDF for Python on Windows
Verify Signatures in PDF in Python
Spire.PDF for Python provides the PdfDocument.VerifySignature(signName: str) method to check the validity of a digital signature in a PDF document. The detailed steps are as follows.
- Create an object of the PdfDocument class.
- Load a PDF file using the PdfDocument.LoadFromFile() method.
- Get the form of the PDF file using the PdfDocument.Form property.
- Iterate through all fields in the form and find the signature field.
- Get the name of the signature field using the PdfSignatureFieldWidget.FullName property.
- Verify the validity of the signature using the PdfSignature.VerifySignature(signName: str) method.
- Python
from spire.pdf.common import *
from spire.pdf import *
# Load a PDF document
doc = PdfDocument()
doc.LoadFromFile("Signature.pdf")
# Access the form in the document
pdfform = doc.Form
formWidget = PdfFormWidget(pdfform)
# Check if there are any fields in the form
if formWidget.FieldsWidget.Count > 0:
# Loop through all fields in the form
for i in range(formWidget.FieldsWidget.Count):
field = formWidget.FieldsWidget.get_Item(i)
# Check if the field is a PdfSignatureFieldWidget
if isinstance(field, PdfSignatureFieldWidget):
# Typecast the field to a PdfSignatureFieldWidget instance
signatureField = PdfSignatureFieldWidget(field)
# Get the name of the signature field
fullName = signatureField.FullName
# Verify the signature
valid = doc.VerifySignature(fullName)
# Determine the validation status text based on the verification result
if valid:
print("The signature is valid")
else:
print("The signature is invalid")
doc.Close()
Detect Whether a Signed PDF Has Been Modified in Python
To determine whether a PDF document has been modified after signing, use the Security_PdfSignature.VerifyDocModified() method. This method returns a Boolean value: True indicates that the document has been altered and the signature is no longer valid, while False confirms that the document remains unchanged since it was signed. The detailed steps are as follows.
- Create an object of the PdfDocument class.
- Load a PDF file using the PdfDocument.LoadFromFile() method.
- Get the form of the PDF file using the PdfDocument.Form property.
- Iterate through all fields in the form and find the signature field.
- Get the signature using the PdfSignatureFieldWidget.Signature property.
- Verify if the document has been modified since it was signed using the Security_PdfSignature.VerifyDocModified() method.
- Python
from spire.pdf.common import *
from spire.pdf import *
# Load a PDF document
doc = PdfDocument()
doc.LoadFromFile("Signature.pdf")
# Access the form in the document
pdfform = doc.Form
formWidget = PdfFormWidget(pdfform)
# Check if there are any fields in the form
if formWidget.FieldsWidget.Count > 0:
# Loop through all fields in the form
for i in range(formWidget.FieldsWidget.Count):
field = formWidget.FieldsWidget.get_Item(i)
# Check if the field is a PdfSignatureFieldWidget
if isinstance(field, PdfSignatureFieldWidget):
# Typecast the field to a PdfSignatureFieldWidget instance
signatureField = PdfSignatureFieldWidget(field)
# Get the signature
signature = signatureField.Signature
# Verify if the document has been modified since it was signed
modified = signature.VerifyDocModified()
# Determine the validation status text based on the verification result
if modified:
print("The document has been modified")
else:
print("The document has not been modified")
doc.Close()
Extract Signature Images from PDF in Python
Spire.PDF for Python allows extracting all signature images from a PDF document using the PdfFormWidget.ExtractSignatureAsImages property. The detailed steps are as follows.
- Create an object of the PdfDocument class.
- Load a PDF file using the PdfDocument.LoadFromFile() method.
- Get the form of the PDF file using the PdfDocument.Form property.
- Extract signature images from the form using the PdfFormWidget.ExtractSignatureAsImages property.
- Save the extracted images to image files.
- Python
from spire.pdf.common import *
from spire.pdf import *
# Load a PDF document
doc = PdfDocument()
doc.LoadFromFile("Signature.pdf")
# Access the form in the document
pdfform = doc.Form
formWidget = PdfFormWidget(pdfform)
i = 0
# Extract signature images from the form and save them to files
for image in formWidget.ExtractSignatureAsImages:
filename = "Signature/" + f"Image-{i}.png"
# Save the image to a file
image.Save(filename)
i = i + 1
doc.Close()
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
