Modifying the font in a Word document can significantly impact its visual appearance and overall readability. Whether you want to enhance the document's style or align it with specific formatting requirements, changing the font is a straightforward process that allows you to customize your text. In this article, you will learn how to change font of a paragraph or a piece of text in a Word document in Python using Spire.Doc for Python.

• Change the Font of a Paragraph in Python
• Change the Font of Specific Text in Python

Install Spire.Doc for Python

This scenario requires Spire.Doc for Python and plum-dispatch v1.7.4. They can be easily installed in your Windows through the following pip command.

pip install Spire.Doc

If you are unsure how to install, please refer to this tutorial: How to Install Spire.Doc for Python on Windows

Change the Font of a Paragraph in Python

Using Spire.Doc for Python, you can create a ParagraphStyle object which defines the font information that can be applied to a certain paragraph. The following are the steps to change the font of a paragraph.

• Create a Document instance.
• Load a Word document using Document.LoadFromFile() method.
• Get a specified section through Document.Sections[index] property.
• Get a specified paragraph that you want to change the font through Section.Paragraphs[index] property.
• Create a ParagraphStyle instance, specifying the font name, font color and font style through the properties under it.
• Add the style to the document using Document.Styles.Add() method.
• Apply the style to the paragraph using Paragraph.ApplyStyle() method.
• Save the result document using Document.SaveToFile() method.

from spire.doc import *
from spire.doc.common import *

# Create a Document instance
document = Document()

# Load a Word document
document.LoadFromFile('C:/Users/Administrator/Desktop/input.docx')

# Get the first section
section = document.Sections[0]

# Get a specific paragraph
paragraph = section.Paragraphs[2]

# Create a paragraph style
style = ParagraphStyle(document)
style.Name = 'NewStyle'
style.CharacterFormat.Bold = True
style.CharacterFormat.Italic = True
style.CharacterFormat.TextColor = Color.get_Red()
style.CharacterFormat.FontName = 'Cambria'
document.Styles.Add(style)

# Apply the style to the paragraph
paragraph.ApplyStyle(style.Name)

# Save the result document
document.SaveToFile('output/ChangeFontOfParagraph.docx', FileFormat.Docx)

Change the Font of Specific Text in Python

To change the font of specific text (letter, phrase or sentence) in a Word document, you need first to find the text from the document and then set a different color or font style for it. The following are the detailed steps.

• Create a Document instance.
• Load a Word document using Document.LoadFromFile() method.
• Find the text that you want to change font color using Document.FindAllString() method.
• Loop through all occurrences of the searched text and change the font color or style for each occurrence through the properties under TextSelection.GetAsOneRange().CharacterFormat object.
• Save the result document using Document.SaveToFile() method.

from spire.doc import *
from spire.doc.common import *

# Create a Document instance
document = Document()

# Load a Word document
document.LoadFromFile('C:/Users/Administrator/Desktop/input.docx')

# Find the text that you want to change font
textSelections = document.FindAllString('programming language', False, True)

# Change the font style of the text
for selection in textSelections:
    selection.GetAsOneRange().CharacterFormat.TextColor = Color.get_Red()
    selection.GetAsOneRange().CharacterFormat.Bold = True

# Save the result document
document.SaveToFile('output/ChangeFontOfText.docx', FileFormat.Docx)

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.

Comparison of PDF documents is essential for effective document management. By comparing PDF documents, users can easily identify differences in document content to have a more comprehensive understanding of them, which will greatly facilitate the user to modify and integrate the document content. This article will introduce how to use Spire.PDF for Java to compare PDF documents and find the differences.

• Compare Two PDF Documents
• Compare a Specified Page Range of Two PDF Documents

Examples of the two PDF documents that will be used for comparison:

Install Spire.PDF for Java

First of all, you need to add the Spire.Pdf.jar file as a dependency in your Java program. The JAR file can be downloaded from this link. If you use Maven, you can easily import the JAR file by adding the following code to your project's pom.xml file.

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.pdf</artifactId>
        <version>11.11.11</version>
    </dependency>
</dependencies>

Compare Two PDF Documents

Spire.PDF for Java provides the PdfComparer class for users to create an object with two PDF documents for comparing. After creating the PdfComparer object, users can use PdfComparer.compare(String fileName) method to compare the two documents and save the result as a new PDF file.

The resulting PDF document displays the two original documents on the left and the right, with the deleted items in red and the added items in yellow.

The detailed steps for comparing two PDF documents are as follows:

• Create two objects of PdfDocument class and load two PDF documents using PdfDocument.loadFromFile() method.
• Create an object of PdfComparer class with the two documents.
• Compare the two documents and save the result as a new PDF document using PdfComparer.compare() method.

import com.spire.pdf.PdfDocument;
import com.spire.pdf.comparison.PdfComparer;

public class ComparePDFPageRange {
    public static void main(String[] args) {
        //Create an object of PdfDocument class and load a PDF document
        PdfDocument pdf1 = new PdfDocument();
        pdf1.loadFromFile("Sample1.pdf");

        //Create another object of PdfDocument class and load another PDF document
        PdfDocument pdf2 = new PdfDocument();
        pdf2.loadFromFile("Sample2.pdf");

        //Create an object of PdfComparer class
        PdfComparer comparer = new PdfComparer(pdf1,pdf2);

        //Compare the two PDF documents and save the compare results to a new document
        comparer.compare("ComparisonResult.pdf");
    }
}

Compare a Specified Page Range of Two PDF Documents

Before comparing, users can use the PdfComparer.getOptions().setPageRanges() method to limit the page range to be compared. The detailed steps are as follows:

• Create two objects of PdfDocument class and load two PDF documents using PdfDocument.loadFromFile() method.
• Create an object of PdfComparer class with the two documents.
• Set the page range to be compared using PdfComparer.getOptions().setPageRanges() method.
• Compare the two documents and save the result as a new PDF document using PdfComparer.compare() method.

import com.spire.pdf.PdfDocument;
import com.spire.pdf.comparison.PdfComparer;

public class ComparePDFPageRange {
    public static void main(String[] args) {
        //Create an object of PdfDocument class and load a PDF document
        PdfDocument pdf1 = new PdfDocument();
        pdf1.loadFromFile("G:/Documents/Sample6.pdf");

        //Create another object of PdfDocument class and load another PDF document
        PdfDocument pdf2 = new PdfDocument();
        pdf2.loadFromFile("G:/Documents/Sample7.pdf");

        //Create an object of PdfComparer class
        PdfComparer comparer = new PdfComparer(pdf1,pdf2);

        //Set the page range to be compared
        comparer.getOptions().setPageRanges(1, 1, 1, 1);

        //Compare the two PDF documents and save the compare results to a new document
        comparer.compare("ComparisonResult.pdf");
    }
}

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.

A workbook can consist of one or more worksheets, and each worksheet is independent. When dealing with an existing Excel file or creating a new Excel file from scratch, we can add worksheets as needed to better manage and analyze data. In this article, we will show you how to add worksheets to Excel programmatically by using Spire.XLS for Python.

• Add a Worksheet to an Existing Excel file
• Add a Worksheet to a New Excel file
• Add Multiple Worksheets to a New Excel file

Install Spire.XLS for Python

This scenario requires Spire.XLS for Python and plum-dispatch v1.7.4. They can be easily installed in your Windows through the following pip command.

pip install Spire.XLS

If you are unsure how to install, please refer to this tutorial: How to Install Spire.XLS for Python on Windows

Add a Worksheet to an Existing Excel file

Spire.XLS for Python allows users to add a new worksheet to an existing Excel file by using Workbook.Worksheets.Add(sheetName) method. The following are detailed steps.

• Create an object of Workbook class.
• Load an Excel file using Workbook.LoadFromFile() method.
• Add a new sheet to this file using Workbook.Worksheets.Add(sheetName) method.
• Add desired text to cell A1 by Worksheet.Range[cellName].Text property.
• Save the result file using Workbook.SaveToFile() method.

from spire.xls import *
from spire.xls.common import *

inputFile = "sample.xlsx"
outputFile = "AddWorksheet.xlsx"

#Create an object of Workbook class 
workbook = Workbook()

#Load an Excel file from disk
workbook.LoadFromFile(inputFile)

#Add a new worksheet to this file
sheet = workbook.Worksheets.Add("New Sheet")

#Add desired text to cell A1
sheet.Range["A1"].Text = "This is a new sheet."

#Save the result file
workbook.SaveToFile(outputFile, ExcelVersion.Version2013)
workbook.Dispose()

Add a Worksheet to a New Excel file

In addition to adding worksheets to existing Excel files, you can also add worksheets to a newly created Excel files with the same method. You just need to clear the default worksheet before adding by calling Workbook.Worksheets.Clear() method. The following are detailed steps.

• Create an object of Workbook class.
• Clear the default worksheets using Workbook.Worksheets.Clear() method.
• Add a new sheet to the new workbook by using Workbook.Worksheets.Add(sheetName) method.
• Add desired text to cell A1 by Worksheet.Range[cellName].Text property.
• Save the result file using Workbook.SaveToFile() method.

from spire.xls import *
from spire.xls.common import *

outputFile = "AddWorksheet.xlsx"

#Create an object of Workbook class 
workbook = Workbook()

#Clear the default sheets
workbook.Worksheets.Clear()

#Add a new worksheet to the new file
sheet = workbook.Worksheets.Add("New Sheet")

#Add desired text to cell A1
sheet.Range["A1"].Text = "This is a new sheet."

#Save the result file
workbook.SaveToFile(outputFile, ExcelVersion.Version2013)
workbook.Dispose()

Add Multiple Worksheets to a New Excel file

If you want to add multiple worksheets to a newly created Excel file, you can use Workbook.CreateEmptySheets(sheetCount) method to add a specified number of worksheets. The following are detailed steps.

• Create an object of Workbook class.
• Add three sheets to this file by using Workbook.CreateEmptySheets(sheetCount) method.
• Loop through the added worksheets and add text to cell A1 in each worksheet by Worksheet.Range[cellName].Text property.
• Save the result file using Workbook.SaveToFile() method.

from spire.xls import *
from spire.xls.common import *

outputFile = "AddWorksheet.xlsx"

#Create an object of Workbook class 
workbook = Workbook()

#Add three sheets to this file 
sheetCount = 3
workbook.CreateEmptySheets(sheetCount)

#Loop through the added worksheets
for i in range(sheetCount):

    #Add text to cell A1 in each worksheet
    sheet = workbook.Worksheets[i]
    sheet.Range["A1"].Text = "This is Sheet{}".format(i+1)

#Save the result file
workbook.SaveToFile(outputFile, ExcelVersion.Version2013)
workbook.Dispose()

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.