Blazor PDF Viewer
Enterprise-Grade PDF Viewer Component for Blazor Applications
No credit card required. | 673K+ downloads
- An accurate PDF display
- Smooth performance with large documents
- A protected, customizable viewer
Trusted by the world’s leading companies
Why do you need our Blazor PDF Viewer?
Building a Blazor PDF viewer from scratch is complex due to challenges with rendering large files, adding annotations, ensuring cross-platform support, and managing security. Syncfusion simplifies this with an enterprise-ready component offering fast rendering, built-in viewing and editing features, seamless integration, and secure architecture—helping accelerate development and deliver rich PDF experiences with less maintenance.
Interact with PDFs in real time—highlight text, annotate content, fill out forms, and add signatures with ease.
Get Started in Minutes
Follow these steps to integrate the PDF Viewer into your Blazor Web application.
1
Install the PDF Viewer Package
Install the Syncfusion® Blazor SfPdfViewer and Themes NuGet packages.
dotnet add package Syncfusion.Blazor.SfPdfViewer
dotnet add package Syncfusion.Blazor.Themes
Install-Package Syncfusion.Blazor.SfPdfViewer
Install-Package Syncfusion.Blazor.Themes2
Register service
Register the Syncfusion® Blazor service in your Program.cs file.
using Syncfusion.Blazor;
// Add with existing service registrations
// Register Syncfusion Blazor PDF Viewer Service
builder.Services.AddSignalR(o => { o.MaximumReceiveMessageSize = 102400000; });
builder.Services.AddMemoryCache();builder.Services.AddSyncfusionBlazor();
// Continue with further configuration3
Add stylesheet and script resources
Add the stylesheet and script references in Components/App.razor to apply proper layout and theme styling.
<head>
<!-- Other head elements -->
<!-- Add Syncfusion theme -->
<link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />
</head>
<body>
<!-- Other body content -->
<!-- Add the PDF Viewer script -->
<script src="_content/Syncfusion.Blazor.SfPdfViewer/scripts/syncfusion-blazor-sfpdfviewer.min.js" type="text/javascript"></script>
</body>4
Add PDF Viewer component
Add the Syncfusion® PDF Viewer component to your Razor page and start building instantly.
@using Syncfusion.Blazor.SfPdfViewer
@rendermode InteractiveServer
<SfPdfViewer2 DocumentPath="https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf"
Height="100%"
Width="100%">
</SfPdfViewer2>AI-assisted Development
Build smart PDF viewing features using AI faster
Build modern PDF viewing experiences faster with Syncfusion AI tools that convert requirements into dynamic document interaction capabilities.
Agent Skills
Create accurate PDF Viewer code with Syncfusion Agent Skills for faster development
Example Prompt Show me how to create a PDF Viewer component in Blazor.
AI Coding Assistant
Generate accurate PDF Viewer code with AI that configures and debugs code directly in your IDE
Example Prompt Show me how to create a PDF Viewer component in Blazor with basic features.
Enterprise-ready PDF viewing power
Unlock insights from every PDF
Our Blazor PDF Viewer does more than display documents—it understands them. With built-in AI features, it can extract essential information, summarize content, detect form fields, and deliver intelligent search experiences within your application. Developers can expand these capabilities to create smart document workflows, automate classification, or connect with enterprise AI systems, all while ensuring robust security and high performance.
- Enables smart extraction of text and form fields.
- Supports AI-driven content analysis and summarization.
Delivers true-to-source accuracy
Experience consistent and reliable document display where every element—text, graphics, fonts, and visuals—is rendered with accuracy. The viewer maintains the original structure and appearance, delivering a uniform experience across different environments.
- Preserves complete layout and font accuracy.
- Delivers consistent rendering across all browsers and devices.
- Maintains visual integrity for text, images, and graphics.
- Ensures uniform display across platforms and screen sizes.
Optimized for large documents
Designed to efficiently manage documents of any size, the PDF Viewer delivers fast load times and smooth interactions. Its intelligent processing ensures responsive performance even when handling complex or high-volume PDF content.
- Supports progressive and on-demand loading.
- Provides smooth navigation for large PDF files.
- Minimizes memory usage for better performance.
- Ensures responsive scrolling and quick page access.
- Handles complex and multi-page documents with ease.
No data leaves your app
Maintain full control over your data with a secure architecture that processes all document operations locally or within your system. This approach protects sensitive information and avoids unnecessary external dependencies.
- Prevents exposure of data to external third-party services.
- Supports compliance with HIPAA, GDPR, and SOC 2® Type 2 standards at the application level.
- Enables complete data isolation within your application.
- Eliminates reliance on external processing services.
- Enhances privacy and control over sensitive documents.
Advanced navigation & search tools
Thumbnails
Navigate documents visually with page previews that give a quick glimpse of each page. Users can easily scan and jump to specific sections, making browsing faster and more intuitive.
Bookmarks
Quickly access important sections using built-in bookmark support. This feature helps users stay oriented and move through documents efficiently without losing context.
Hyperlinks
Enhance navigation with interactive links embedded within the document. Users can follow references and jump to related sections instantly, creating a more connected reading experience.
Text search
Locate information instantly with powerful search functionality. Matching content is highlighted, allowing users to quickly find and navigate to relevant text.
Text selection
Interact directly with document content by selecting and copying text with ease. Simple actions like dragging or using shortcuts make content extraction quick and seamless.
Zooming
Adjust document views effortlessly with flexible zoom options. Users can change magnification levels or fit content to the screen for a comfortable and customizable viewing experience.
Seamless PDF editing experience
Deliver secure, interactive, and professional PDF viewing directly within your application. The Blazor PDF Viewer offers robust tools for reviewing, filling, and protecting documents, all seamlessly handled in the browser.
Rich annotation tools
Add highlights, sticky notes, stamps, freehand drawings, shapes, and ink annotations to PDFs. Users can review content, import or export annotations, and maintain consistent feedback across workflows.
Form filling and designer
Complete interactive forms with text fields, checkboxes, radio buttons, and dropdowns, or design new forms within the viewer. Users can edit, preview, and save forms in real time, streamlining data collection.
Secure signatures and redaction
Apply handwritten, typed, and image-based electronic signatures, or validate digital certificates to ensure authenticity. Protect sensitive information with built-in redaction tools that permanently remove confidential data from documents.
Organize pages
Modify PDFs by adding, removing, reordering, or rotating pages. Import pages from other documents and download the result instantly.
Accessibility and global readiness
WCAG-compliant viewer
Fully adheres to WCAG standards with features like keyboard navigation, ARIA labels, and high-contrast themes to support users with disabilities.
Multilingual and RTL support
Offers complete localization with right-to-left (RTL) rendering, enabling seamless adaptation to global languages and regional workflows.
Screen reader compatibility
All PDF content, form fields, and controls are accessible to screen readers, providing an inclusive experience for all users.
UI customization & extensibility
Build and adapt your PDF experience with the Blazor PDF Viewer, designed for flexibility and growth. It enables easy integration, advanced customization, and the scalability required for modern applications.
- Personalize the interface with themes, localization options, and RTL layout support.
- Accelerate development with extensive documentation and reliable enterprise-level support.
- Adapt to diverse user needs with responsive design and touch-friendly interactions.
Industry-specific use cases
The Blazor PDF Viewer is tailored to meet the unique requirements of various industries, empowering professionals across sectors to view, annotate, and manage PDF documents with confidence.
No credit card required.
Legal compliance
Law firms and compliance teams can efficiently review contracts, case files, and regulatory documents with advanced tools for annotation, redaction, and digital signatures.
Healthcare
Healthcare professionals can securely access, annotate, and share patient records, lab results, and consent forms in PDF format, using HIPAA-compliant features to ensure protected data handling.
Finance and banking
Finance teams can validate statements, invoices, and audit reports within PDFs. Features like text search, form filling, and digital signatures streamline approvals and support regulatory compliance.
Education and e-learning
Educators and students can highlight, comment on, and annotate course materials, research papers, and e-books, enhancing engagement and simplifying content review.
See Why Developers Love Syncfusion
These real-time stories shows the impact of our PDF Viewer SDK
The best way to showcase our commitment is through the experiences and stories of those who have used our PDF Viewer.
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.
Read Our Customer StoriesIndustry
Software development
75% Cost reduction
50% Faster development
Industry
Utilities (oil and gas)
450+ hours saved
Streamlined processes and hours of development effort saved.
Advanced, flexible features
Empowered users through robust and versatile functionality.
Industry
Software and technology
1000+ of hours saved
Accelerated development with enterprise-ready UI components.
Efficient file management
Streamlined workflows with document libraries without building them from scratch.
Industry
Software and technology
2 Years of delay avoided
Two years of delays prevented with proactive planning.
On-time delivery
Projects delivered on schedule using trusted controls.
Industry
IT services and IT consulting
Improved performance
Large datasets handled with easy customization and quick debugging.
Highly customizable
Plug-and-play controls with quick template integration.
Industry
Professional services
Instant access
Quick availability of features and resources.
Reduced dependencies
Fewer dependencies for faster development.
Endless possibilities with one viewer
Whether you’re building dashboards, managing legal documents, or delivering e-learning content, the Blazor PDF Viewer provides seamless document interaction. Join over 1M developers who trust Syncfusion for secure, enterprise-grade PDF rendering, annotation, and form filling. Discover why it consistently outperforms competing solutions in real-world performance benchmarks.
No credit card required.
Blazor PDF Viewer FAQs
If you’re new to the Blazor PDF Viewer or have questions, our FAQ will help you explore its features and capabilities.
Frequently Asked Questions
What is the Blazor PDF Viewer?
The Syncfusion Blazor PDF Viewer is a powerful toolkit that enables developers to integrate PDF viewing capabilities into their applications.
Is Blazor PDF Viewer suitable for production and enterprise applications?
Yes. The Blazor PDF Viewer is built for real world production use, supporting large documents, predictable performance, secure document handling, and long term maintainability in enterprise environments.
Can I customize the Blazor PDF Viewer to match my application’s UI and workflows?
Yes. The Blazor PDF Viewer provides flexible APIs for customizing the viewer UI, toolbar, behavior, and interactions, allowing teams to align PDF workflows with application specific requirements and branding.
Can the Blazor PDF Viewer handle large and complex PDF documents?
Yes. The Blazor PDF Viewer is optimized for large and complex PDFs, using progressive loading and efficient rendering to maintain smooth interaction and stable performance in production environments.
What developer resources are available for Blazor PDF Viewer?
Comprehensive documentation, code samples, API references, demos and community forums are available to help developers evaluate, integrate, and extend the Blazor PDF Viewer efficiently.
How do I get started with the Syncfusion® Blazor PDF Viewer?
You can get started by reviewing the official documentation, exploring live samples, and following step by step integration guides to embed the PDF Viewer into your Blazor application.
Does the Blazor PDF Viewer support form filling?
Yes, the Blazor PDF Viewer supports filling out interactive PDF forms (AcroForms). Users can enter data into text fields, checkboxes, radio buttons, and dropdowns directly within the viewer and save or submit the completed form.
Does the Blazor PDF Viewer support digital signatures?
Syncfusion Blazor PDF Viewer supports adding and displaying electronic signatures (drawn, typed, or image-based) as well as digital signatures (certificate-based) within PDF documents. However, advanced digital signature validation—such as verifying certificate authenticity and document integrity—typically requires server-side processing or the use of Syncfusion’s dedicated PDF libraries.
Is it possible to edit PDF content in the Blazor PDF Viewer?
The Blazor PDF Viewer supports limited editing capabilities such as annotations, text markup, and form field updates. Full content editing (like modifying existing text or images in the PDF) typically requires additional PDF processing tools or backend services.
Can I customize the toolbar for specific features like form filling or signatures?
Yes, the Blazor PDF Viewer allows you to customize the toolbar based on your application requirements. You can enable or disable features such as form filling, annotations, signatures, and download or print options. Additionally, you can add custom toolbar buttons to implement your own functionality and further tailor the user experience.
Why should you choose Syncfusion Essential Studio Blazor PDF Viewer?
The Syncfusion Blazor PDF Viewer enables developers to embed secure, high performance PDF viewing and interaction directly into Blazor applications. It is designed for enterprise and production environments where reliability, scalability, and control are essential.
Is the Blazor PDF Viewer compatible with other frameworks and platforms?
While optimized for Blazor, it follows consistent API patterns and is part of a broader ecosystem supporting multiple frameworks, enabling teams to maintain consistency across applications.
How does the Blazor PDF Viewer compare to other PDF viewer solutions?
The Blazor PDF Viewer differs from basic or third party viewers by offering enterprise ready performance, security, extensibility, and long term support. It is designed for applications that require production grade document workflows rather than simple viewing.
Is the Blazor PDF Viewer secure and compliant?
Security is a core design principle. All PDF operations run within the application by default, and supports application level compliance requirements such as HIPAA, GDPR, and SOC 2 for handling sensitive documents.
Does the Blazor PDF Viewer support PDF annotation?
Yes, the Blazor PDF Viewer includes rich PDF annotation tools such as highlight, underline, strikethrough, shapes, freehand drawing, and comments, enabling efficient document review and collaboration.
Can I perform text search in PDF documents?
Yes, the Blazor PDF Viewer provides powerful text search in PDF capabilities, allowing users to quickly find and highlight specific words or phrases within large documents.
Can I design or create PDF forms in the Blazor PDF Viewer?
Yes, the Blazor PDF Viewer supports designing and creating PDF forms using its built-in form designer feature. You can add and customize form fields such as text boxes, checkboxes, and signature fields either programmatically or through the user interface. It also allows you to configure validation rules and set default values as needed.
Can users verify digital signatures in PDFs?
Syncfusion’s ecosystem supports validation of digital signatures and can indicate whether they are valid or modified. However, this functionality typically relies on the Syncfusion PDF Library (server-side or additional processing), and is not handled solely by the Blazor PDF Viewer component.
What design customization options are available in the Blazor PDF Viewer?
The Blazor PDF Viewer provides extensive design customization options including toolbar customization, theme support, layout adjustments, and integration with CSS frameworks. Developers can tailor the UI to match their application’s branding.
Does the viewer support saving filled forms or edited PDFs?
Yes, users can save PDFs with filled form data, annotations, and signatures applied. This can be done locally or sent to a server for storage or further processing.
Resources
Learn more about our Blazor PDF Viewer
Explore demos, KB articles, and documentation to get the most out of our PDF Viewer.
Explore guides, APIs, and quick-start tips
See live use cases in action
Ask, share, and connect with peers
Find solutions and best practices fast
Get expert help when you need it
Feature requests and bug reports
Track issues and suggest improvements
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