using IronPdf; // Disable local disk access or cross-origin requests Installation.EnableWebSecurity = true; // Instantiate Renderer var renderer = new ChromePdfRenderer(); // Create a PDF from a HTML string using C# var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>"); // Export to a file or Stream pdf.SaveAs("output.pdf"); // Advanced Example with HTML Assets // Load external html assets: Images, CSS and JavaScript. // An optional BasePath 'C:\site\assets\' is set as the file location to load assets from var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\"); myAdvancedPdf.SaveAs("html-with-assets.pdf");

using IronPdf; using System; // Step 1. Creating a PDF with editable forms from HTML using form and input tags // Radio Button and Checkbox can also be implemented with input type 'radio' and 'checkbox' const string formHtml = @" <html> <body> <h2>Editable PDF Form</h2> <form> First name: <br> <input type='text' name='firstname' value=''> <br> Last name: <br> <input type='text' name='lastname' value=''> <br> <br> <p>Please specify your gender:</p> <input type='radio' id='female' name='gender' value= 'Female'> <label for='female'>Female</label> <br> <br> <input type='radio' id='male' name='gender' value='Male'> <label for='male'>Male</label> <br> <br> <input type='radio' id='non-binary/other' name='gender' value='Non-Binary / Other'> <label for='non-binary/other'>Non-Binary / Other</label> <br> <p>Please select all medical conditions that apply:</p> <input type='checkbox' id='condition1' name='Hypertension' value='Hypertension'> <label for='condition1'> Hypertension</label><br> <input type='checkbox' id='condition2' name='Heart Disease' value='Heart Disease'> <label for='condition2'> Heart Disease</label><br> <input type='checkbox' id='condition3' name='Stoke' value='Stoke'> <label for='condition3'> Stoke</label><br> <input type='checkbox' id='condition4' name='Diabetes' value='Diabetes'> <label for='condition4'> Diabetes</label><br> <input type='checkbox' id='condition5' name='Kidney Disease' value='Kidney Disease'> <label for='condition5'> Kidney Disease</label><br> </form> </body> </html>"; // Instantiate Renderer var renderer = new ChromePdfRenderer(); renderer.RenderingOptions.CreatePdfFormsFromHtml = true; renderer.RenderHtmlAsPdf(formHtml).SaveAs("BasicForm.pdf"); // Step 2. Reading and Writing PDF form values. var FormDocument = PdfDocument.FromFile("BasicForm.pdf"); // Set and Read the value of the "firstname" field var FirstNameField = FormDocument.Form.FindFormField("firstname"); FirstNameField.Value = "Minnie"; Console.WriteLine("FirstNameField value: {0}", FirstNameField.Value); // Set and Read the value of the "lastname" field var LastNameField = FormDocument.Form.FindFormField("lastname"); LastNameField.Value = "Mouse"; Console.WriteLine("LastNameField value: {0}", LastNameField.Value); FormDocument.SaveAs("FilledForm.pdf");

Published August 30, 2023

How to Annotate a PDF File (Beginner Tutorial)

In today's digital age, PDFs (Portable Document Format) have become the standard for sharing and preserving documents across various platforms and devices. Whether you're a student, professional, or simply dealing with electronic documents, the ability to annotate a PDF using PDF annotator and editing tools is a crucial skill. PDF annotations allow you to highlight important points, add comments using the comment toolbar and text box, and make notes directly on the document, enhancing collaboration and understanding. In this guide, we will walk you through the process of how to annotate a PDF using different PDF annotation tools and methods.

Built-in PDF Annotation Tools

Many PDF viewers and editors come with a built-in PDF annotation tool, making the process of annotating a PDF relatively straightforward. Here's a step-by-step guide using popular PDF applications.

Annotate a PDF Document using Adobe Acrobat Reader

Adobe Acrobat DC is one of the most widely used PDF viewers, offering robust annotation tool features.

Open the PDF

Open your PDF document using Adobe Acrobat Reader.

How to Annotate a PDF File (Beginner Tutorial): Figure 1 - PDF Document

Access the Annotation Tools

The annotation tool is displayed as a pop-up note once you open the document. However, you can also open it by clicking on the "Add Comments" tab under the "All Tools" menu.

How to Annotate a PDF File (Beginner Tutorial): Figure 2 - Annotation Tools

Highlight Text

Click on the highlighter tool and choose your preferred color.

How to Annotate a PDF File (Beginner Tutorial): Figure 3 - Highlighter

Select the text you want to highlight as shown below.

How to Annotate a PDF File (Beginner Tutorial): Figure 4 - Text Selection

Add Comments

To add comments or sticky notes, click the "Add a Comment" icon from the tools.

How to Annotate a PDF File (Beginner Tutorial): Figure 5 - Add a comment

Move the mouse cursor near the relevant section. Type your comment in the pop-up box as shown below.

How to Annotate a PDF File (Beginner Tutorial): Figure 6 - Comment

Add Text Boxes

You can add text boxes by selecting the text box option from the menu as shown below.

How to Annotate a PDF File (Beginner Tutorial): Figure 7 - Text box

Move the cursor where you want to add the text, type your text, and set the font size and style as shown below.

How to Annotate a PDF File (Beginner Tutorial): Figure 8 - Add Text

There are other options available, such as adding ticks, signatures, initials, and uploading files. In this way, we can easily annotate PDF files.

Once you've finished annotating, save the PDF file. You can then share the annotated document with others.