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The ASP.NET PDF Viewer control supports viewing, reviewing, and printing PDF files in ASP.NET Web Forms applications. The hyperlink and table of contents support provides easy navigation within and outside the PDF files. The form-filling support provides a platform to fill, flatten, save, and print PDF files with AcroForm. PDF files can be reviewed with text markup annotation tools.


High-performance PDF Viewer

Instant Loading in PDF viewer

Instant Loading

Load PDF files with thousands of pages instantly.

Less runtime memory in PDF Viewer

Less runtime memory

On-demand loading and virtualization hold only the minimum required pages at runtime to reduce memory consumption.

Virtualized pages

Virtualized pages

Render pages on demand to reduce initial load time when working with large PDF files.

Open PDF file

Open and display both normal and PDF files protected with AES and RC4 encryption algorithms (password protected). Open PDF files from stream, file paths, and as byte arrays.

Open pages

Responsive Rendering

Responsive Rendering

The PDF Viewer is engineered to be responsive and can withstand changes in the size of the parent element.

Review or Annotate PDF files

Review PDF files using a rich set of annotating tools in the JavaScript PDF Viewer.

Highlight text

Highlight important texts in the PDF files. You can customize the color of the highlight or remove the highlight.

Highlight text in ASP pdf viewer

Underline text in ASP pdf viewer

Underline text

Underline notable text in PDF files. You can customize the color of the underline or remove the underline.


Strikethrough unimportant text in PDF files. You can customize the color of the strikethrough or remove the strikethrough.

Strikeout unimportant text

Freehand drawing

Freehand signatures

Freehand signatures can be included in the pages of a PDF file. The color and opacity of the signature can be customized.

Form filling

PDF Forms helps to automate your process of data collection and processing. Syncfusion HTML5 JavaScript PDF Viewer control provides the ability to fill, edit, flatten, and save AcroForms fields in PDF files.

Form filling

Printing PDF

Printing PDF

The PDF Viewer supports printing a PDF file loaded in it. Print the PDF file along with the annotations included in it.

Built-in toolbar

The PDF Viewer comes with a powerful built-in toolbar to execute most important actions such as page navigation, text search, view mode, print, and various annotation tools. You can design your own toolbar as required with PDF Viewer APIs.

Built-in toolbar

The HTML5 JavaScript PDF Viewer control supports different internal and external navigations.

Hyperlink navigation

Hyperlink navigation feature enables navigation to the URLs (website links) in a PDF file.

Table of contents

Table of contents navigation allows users to navigate to different parts of a PDF file that are listed in the table of contents section.

Table of content navigation

Select and copy text

Select and copy text

The ASP.NET PDF Viewer allows users to select and copy text from PDF files. This is helpful for copying and sharing text content.

Search text

Locate text easily in a PDF file.

Search text


Toolbar customization

Toolbar customization

Create a custom toolbar with all the options that can be performed using the built-in toolbar

Applying theme

Choose from 13 stunning, built-in themes.

Applying theme



All static text within the PDF Viewer can be localized to any supported language.


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