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At a high level, strikethrough annotations, also known as strikeout or line-through markups, enable reviewers to visually indicate deletions or corrections within PDF text while preserving the underlying content. This annotation type belongs to the broader category of text markup annotations, which also includes highlighting, underlining, and squiggly underlines. Developers can customize properties like color, opacity, and associated notes or author metadata. Strikethrough annotations support interactive use cases, such as insert/edit/delete, event handling, and rendering consistency across different rendering engines.

Several WinForms PDF controls offer support for strikethrough annotations including:

• Telerik UI PDF for WinForms (part of Telerik UI for WinForms) offers strikethrough as part of its PDF text markup annotation capabilities.
• XFINIUM.PDF CROSS PLATFORM EDITION allows developers to add, customize, and render strikethrough annotations across various environments.
• Syncfusion Windows Forms PDF (part of Syncfusion Essential Studio Enterprise) includes full support for strikethrough annotations.

For an in-depth analysis of features and price, visit our WinForms PDF controls comparison.

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