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PDF annotation tools for document review

Provide annotation tools including highlights, shapes, text notes, stamps, and signatures for document review and collaboration. Capture feedback, mark revisions, and track updates directly within PDF files during review processes.

React PDF Viewer text markup annotations

Highlight and mark PDF text

Text markup annotations mark selected PDF text with highlighting, underlining, strikethrough, or squiggly styles. Passage-level annotation is suitable when specific content needs emphasis, review, correction, or verification.

React PDF Viewer shape and measurement annotations

Draw shapes and measure PDFs

Draw shape annotations and measurement tools directly on PDF pages to mark layouts, designs, and spatial dimensions. Visual annotation is suitable when page areas, dimensions, or layout details need review or verification.

React PDF Viewer ink and free-text annotations

Add freehand sketches and free text

Draw freehand sketches with ink annotations and add text annotations to capture ideas and feedback directly on PDF pages. Suitable for providing visual context, handwritten notes, or custom feedback beyond traditional markup.

React PDF Viewer sticky notes and comment panel

Add comments with sticky note

Attach sticky note comments to specific PDF locations to keep feedback associated with relevant content. Comments linked to specific document areas are suitable when review discussions and decisions need to remain connected to the corresponding content.

React PDF Viewer stamp and signature annotations

Sign and approve PDF documents

Add approval marks and electronic signatures to PDF documents to indicate review status and confirm decisions. Apply built-in stamps or create custom text stamps with configurable styling, author details, and timestamps. Approval and signature tools are suitable when review actions, approver information, and decision history need to be recorded within the document.

Web and document link annotations

Enhance document navigation with interactive web and document links. Create, edit, and manage link annotations that connect content to external websites, online resources, or specific pages, sections, and destinations within the same document, helping users access relevant information more efficiently.

Customize annotation appearance and behavior

Customize annotation appearance and behavior with colors, opacity, line styles, fonts, and stamps to match organizational standards. Annotation customization is suitable when review workflows require consistent styling and organization-specific presentation.

Manage annotation review workflows

Keep document reviews organized by modifying markups, controlling permissions, undoing changes, and organizing feedback throughout the review lifecycle. Annotation management supports complex review processes with multiple contributors while maintaining clear, structured collaboration.

Import and export PDF annotations

Preserve and share annotation data across teams and systems by importing and exporting annotation data. Annotation import and export helps integrate PDF reviews with business workflows, streamline collaboration across departments, and maintain review history.

See Why Developers Love Syncfusion

Our Customers Love Us

Having an excellent set of tools and a great support team, Syncfusion reduces customers’ development time. Here are some of their experiences.

Adrian S

Small-Business

Syncfusion has an amazing react library with a lot of great component, including a fantastic PDF Viewer. It’s the only PDF Viewer that I’ve been able use, hassle free, full fledged, immediately. The PDF Viewer SDK component comes with all the functionality I could wish, fully customizable. When compared to other commercial products, the number of features is amazing and complete. I’ve found all I needed.

Alexandru A,

Administrator, Small-Business

What I like most about Essential Studio is the broad and reliable set of document-processing components, particularly the PDF Viewer and Document SDK. These components have helped us integrate document viewing and processing capabilities into our applications without having to build complex functionality from scratch.

Frequently Asked Questions

What annotation types does Syncfusion React PDF Viewer support?

React PDF Viewer supports text markup, shapes, measurements, ink, free text, sticky notes, stamps, redaction, and handwritten signatures.

Can annotations be protected from edits after review in Syncfusion React PDF Viewer?

Yes. Annotation lock prevents editing and deletion after review. Permission settings also restrict annotation creation, interaction, printing, and downloading.

Can annotation appearance be customized in Syncfusion React PDF Viewer?

Yes. Annotation properties such as color, opacity, thickness, and font settings can be customized within the Viewer to match specific review or branding requirements.

Does Syncfusion React PDF Viewer support annotation import and export?

Yes. The React PDF Viewer supports exporting and importing annotation data in JSON and XFDF formats to preserve review history.

Are Syncfusion React PDF Viewer annotations supported on mobile?

Yes. Annotation tools are supported in mobile browsers, including touch-based interactions for drawing, selecting, and editing annotations.

Is there a panel to view and manage all annotations in Syncfusion React PDF Viewer?

Yes. All annotations in the React PDF Viewer can be accessed through a centralized comment panel, where reviewers can view, reply to, navigate, and manage annotation discussions.

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