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Overview

The AI-powered Blazor PDF Viewer combines all the essentials—viewing, annotating, printing, and form filling—with intelligent AI features that save time and boost productivity. Users can chat with PDFs to get instant answers or summaries, apply smart redaction to protect sensitive data, and use smart form filling to complete forms in one click. Powered by services like OpenAI, Google Gemini, Groq, and DeepSeek, it delivers a secure and smarter way to work with PDFs inside Blazor apps.

AI-Powered Blazor PDF Viewer overview.


Why choose the Syncfusion AI-powered Blazor PDF Viewer?

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AI assistance

Chat with your PDFs, ask questions in natural language, and generate instant summaries. This helps users work faster with lengthy or complex documents.

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AI-powered redaction

Protect sensitive data smartly by automatically detecting and marking personal or confidential information. Review suggestions and apply redaction securely to comply with regulations.

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Smart form fill

Speed up workflows by automatically detecting and completing PDF form fields using clipboard data. This reduces repetitive typing and errors, and also enhances productivity.

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High performance at scale

Thousands of PDF pages can be loaded instantly. On-demand loading and virtualization ensure smooth performance, even for very large files.

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Rich annotation and collaboration

Highlight, underline, add sticky notes, or draw shapes directly in the PDF. A flexible comment panel allows users to reply, manage statuses, and collaborate effectively.

Form filling and designer.

Form filling and form designer

Create, edit, and manage interactive form fields, and fill or save AcroForms with full support for exporting and importing in standard formats.

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Handwritten signatures

Add handwritten signatures directly inside documents. Resize, move, or save them as needed.

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Responsive and accessible design

The PDF Viewer is optimized for desktops, tablets, and mobile devices across iOS, Android, and Windows. Full support for accessibility standards and screen readers ensures inclusivity for blind and low-vision users.


AI assistance chat with your PDFs.

AI assistance: Chat with your PDFs

Interact with documents using natural language. Ask questions, get instant answers, and generate summaries without scrolling through pages to make complex files easier to understand.


Smart redaction

The viewer analyzes the document to detect sensitive text, such as names, IDs, or financial data, and mark it for redaction. After confirming which data to obscure, redaction is applied securely to meet privacy and compliance needs.

Smart redaction.


Smart form fill.

Smart form fill

The viewer detects all form fields in a document and can populate them instantly using clipboard data. This ensures forms are completed quickly, and is particularly useful for handling applications, invoices, and other structured documents.


Flexible AI integration

The AI-powered Blazor PDF Viewer is designed to work with leading AI providers such as OpenAI, Google Gemini, DeepSeek, and more. By simply configuring an API key and model at the application level, developers can choose the most appropriate AI service for their use case.

Flexible AI integration.


Open PDF file using Blazor PDF Viewer.

Open PDF file

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


Review or annotate PDF files

Review PDF files using a rich set of annotation tools in the Blazor PDF Viewer.

Highlight text using Blazor PDF Viewer.

Highlight text

Users can highlight important text in Blazor PDF files and customize the color of the highlighted text.

Underline text using Blazor PDF Viewer.

Underline text

Underline important text in PDF files. You can customize the color of the underline.

Strikethrough text using Blazor PDF Viewer.

Strikethrough

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

Blazor PDF Viewer shape annotations.

Shape annotations

Use drawing tools to add rectangles, circles, ellipses, lines, arrows, and polygons to a PDF file. The shapes can also be moved, resized, and customized.

Blazor PDF Viewer calibrate - measuring tools.

Measuring tools

Measure the distance, area, radius, volume, and perimeter of objects in the document.

Blazor PDF Viewer stamp annotation.

Stamp a document

Add stamps to a PDF file like you would apply rubber stamps to a paper document. Choose from a list of built-in stamps or create your own.

Blazor PDF Viewer free text annotation.

Free-text annotation

Include free text in PDF files. Users can move, resize, remove, or edit the appearance of free text.

Blazor PDF Viewer sticky notes and comments.

Sticky notes and comments

Add sticky notes and comments anywhere in a PDF file. They can also be moved and removed.


Import and export annotations in Blazor PDF Viewer.

Import and export annotations

Annotations in a PDF file can be exported as JSON and stored in a database. You can also import annotation JSON data into a PDF file.


Form designer

The PDF Viewer control provides the option to add, edit, and delete form fields. The form field types supported by the PDF Viewer control are text box, password, checkbox, radio button, list box, dropdown, and signature field. The form field values can be exported to and imported from JSON, XFDF, FDF, and XML formats.

Blazor PDF Viewer form designer


Accessibility

Keyboard navigation in AI-Powered Blazor PDF Viewer.

Keyboard navigation

The AI-powered Blazor PDF Viewer component ensures that every tool is accessible using the keyboard. Major operations like opening files, navigating pages, zooming, adding comments, showing or hiding annotation and form designer toolbars, printing, and downloading can be done without any mouse interaction. This helps create highly accessible applications.

Screen reader in AI-Powered Blazor PDF Viewer.

Screen reader

The AI-powered Blazor PDF Viewer has complete WAI-ARIA accessibility support. The UI includes high-contrast visual elements that help users with low vision have the best viewing experience. Also, valid UI descriptions are easily accessible through assistive technologies such as screen readers.

Right to left in AI-Powered Blazor PDF Viewer.

Right to left (RTL)

Right-to-left rendering allows the text and layout of the PDF Viewer to be displayed from right to left. This improves the experience for users who use languages that are written from right to left, like Hebrew and Arabic.




Frequently Asked Questions

  • Get instant answers and summaries using built-in AI assistance.
  • Autopopulate fields with clipboard data by using smart form filling.
  • Submit sensitive values via API and select which ones to redact.
  • Seamlessly integrate into web, mobile, and hybrid apps.
  • Enjoy simple configuration and APIs.
  • Supports all modern browsers.
  • Implement one of the best AI-powered Blazor PDF Viewers on the market.
  • Use expansive learning resources, such as demos and documentation, to get started quickly.

You can find our AI-powered Blazor PDF Viewer demo here, which demonstrates how to render and configure the Smart PDF Viewer.

No, this is a commercial product and requires a paid license. However, a free Community License is available for companies and individuals whose organizations have less than US $1 million in annual gross revenue, 5 or fewer developers, and 10 or fewer total employees.

A good place to start would be our comprehensive getting started documentation.

See Real Success Stories

Developers around the world trust Syncfusion’s Essential Studio to simplify complex projects and speed up delivery. With a vast library of UI controls, powerful SDKs, and reliable support, Essential Studio helps teams build enterprise-ready applications with confidence.

Explore Case Studies


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Syncfusion AI-powered Blazor PDF Viewer resources

Awards

Greatness—it’s one thing to say you have it, but it means more when others recognize it. Syncfusion® is proud to hold the following industry awards.

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