Toolbar in Blazor PDF Viewer component

17 Jul 20262 minutes to read

This page provides a concise reference describing the toolbars available in the Blazor PDF Viewer component. It also explains what each toolbar is for and when it appears.

List of Available Toolbars

Functional Overview of Each Toolbar

Primary toolbar

The primary toolbar provides quick access to common viewer actions and entry points to feature-specific toolbars. It adapts to the available width and shows controls appropriate for the current device and layout.

Primary toolbar options include:

  • Open file
  • Page navigation
  • Magnification
  • Pan tool
  • Text selection
  • Text search
  • Print
  • Submit form
  • Comments panel
  • Download
  • Undo and redo
  • Annotation tools
  • Form designer tools
  • Redaction tools
  • Bookmark panel
  • Thumbnail panel

primary desktop toolbar

See Primary toolbar customization for configuration options and examples.

Annotation toolbar

The annotation toolbar appears below the primary toolbar when annotation features are enabled. It provides tools to create and edit annotations.

Annotation toolbar options include:

  • Text markup: Highlight, Underline, Strikethrough, Squiggly
  • Shapes: Line, Arrow, Rectangle, Circle, Polygon
  • Measurement: Distance, Perimeter, Area, Radius, Volume
  • Freehand: Ink, Signature
  • Text: Free text
  • Stamp: Built-in and custom stamps
  • Properties: Color, opacity, thickness, font
  • Edit helpers: Comments panel, Delete
  • Close

annotation desktop toolbar

See Annotation toolbar customization for configuration options and examples.

Form Designer toolbar

The form designer toolbar appears when form designer mode is enabled and provides tools to add and configure interactive form fields.

Form designer toolbar options include:

  • Field types: Button, Text box, Password, Checkbox, Radio button, Drop-down, List box, Signature, Initial
  • Edit helpers: Delete
  • Close

form designer toolbar

See Form designer toolbar customization for configuration options and examples.

Mobile toolbar

  • A compact toolbar layout optimized for small screens and touch interactions. It appears automatically on mobile-sized view ports and contains the most frequently used actions in a space-efficient arrangement.

mobile toolbar

  • Annotation toolbar in mobile mode appears at the bottom of the PDF Viewer component.

mobile annotation toolbar

Redaction toolbar

The redaction toolbar provides tools to mark and permanently remove sensitive content. It appears below the primary toolbar when redaction is enabled.

Redaction toolbar options include:

  • Redaction marks: Mark for redaction, Redact page
  • Apply redactions: Permanently remove marked content
  • Properties: Redaction properties
  • Edit helpers: Delete
  • Close

redaction toolbar

See Redaction toolbar customization for configuration options and examples.

Customize toolbars

The following quick links describe how to customize, show, or hide specific toolbar items. Each linked page defines custom toolbar configurations and examples.

Further Reading