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PDF Viewer SDK

Web PDF Viewer

Supported in:
React Angular JavaScript Vue ASP.NET Core ASP.NET MVC

Erase ink annotations

The PDF Viewer supports an ink eraser tool, allowing users to remove portions of ink annotations. The tool is available contextually when working with ink and can also be enabled programmatically.

Ink eraser

Filter annotation comments

A new filtering option in the comments panel allows users to narrow down annotations based on specific criteria. For improved context, filtered results can also be visually indicated within the document, making it easier to focus on relevant annotations during review.

Filter annotation comments

Improved annotation download

Significant improvements have been made to annotation processing during document downloads. Performance has increased by up to 92% for documents with more than 30 annotations and by around 35% for smaller documents. This provides quicker downloads and a more responsive experience when working with annotated PDFs.

The following table shows the annotation download performance before and after optimization.

Scenario Previous performance Current performance
Document with 1 annotation (updating 1 annotation) 24.88 ms 19.63 ms
Document with 30 annotations (updating 1 annotation) 54.53 ms 26.72 ms
Document with 400 annotations (updating 1 annotation) 1,649.25 ms 152.79 ms

Blazor PDF Viewer

View formatted bookmark text

This feature of the Blazor PDF Viewer supports rendering bookmark text in view-only mode with the formatting styles defined in the source document. Bookmarks are displayed exactly as authored, preserving their original styling and structure while improving readability and navigation.

Bookmark text formatting

Check Live Demo:

.NET MAUI PDF Viewer

Control double-tap zoom behavior

Developers can enable or disable double-tap zoom functionality in the PDF Viewer. This provides greater control over user interactions, especially in applications with custom gesture handling or restricted zoom scenarios.

Double-tap zoom

Set all PDF form fields to read-only

The PDF Viewer provides an option to mark all form fields as read-only with a single setting. This is useful in scenarios such as document reviews or when displaying finalized forms, ensuring data integrity by preventing unintended modifications.

Read-only form fields

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