User Guide
Nitro PDF Mac

Highlight, Underline, Strikethrough, and Squiggle

Nitro PDF Pro offers several ways to mark-up text by adding highlight colors, underline, strikethrough, and squiggle.

  • Clicking the down arrow next to the Highlight button
    toolbar-highlight-button
    in the Toolbar.
  • Choosing Format > Highlight, where the shortcuts are listed.
  • Right-click to reveal the context-sensitive menu options.

The mark-up will attempt to follow the line of the text exactly. If the text is not selectable text or the highlight is not used on text, the highlight will follow the path of the cursor. Text can be made selectable using Optical Character Recognition (OCR).

There are several means of performing markups:

Markup Selected Text

highlight-tool


  1. Select some text.
  2. Click the down arrow next to the Highlight button in the Toolbar to view the mark-up choices, then pick one. Alternately, right-click or Control-click on the selected text. A context menu will appear with options for applying a highlight color, underline, strikethrough, or squiggle.
  3. Select an option.
  4. A highlight color, underline, strikethrough, or squiggle will appear over the selected text.

Use the Highlight Tool

  1. Access the highlight tool in one of two ways:
    • Choose Tools > Highlight Text Tool
      toolbar-highlight
      (Command+3).
    • Click the down arrow next to the Highlight button
      toolbar-highlight-button
      in the Toolbar to reveal color and mark-up options.
  2. Select a color from the options provided, or choose Edit Custom Colors
    highlight-custom-color
    to select another color.
  3. Drag over some text. The current highlight choice in the toolbar‘s Highlight button is used to mark-up the text.

Add a Note to a Highlight

  1. Double click on a highlighted section of text. The text window of a Note will appear.
  2. Type into the text window. When you are done the Note icon will appear next to the highlighted text. Optionally close the text window by clicking the red button in the upper left, or pressing the Escape key.

    For more on adding Notes, see Notes.

Delete a Highlight

  1. Select the already highlighted text.
  2. Click the down arrow next to the Highlight button
    toolbar-highlight-button
    in the Toolbar to reveal the mark-up options.
  3. Select
    highlight-remove
    Remove. This will remove all highlights from the selected text. Alternately, access the Remove function by choosing Format > Highlight > Remove (Command+Shift+Option+0).

Creating Custom Highlight Colors

You can create 3 custom highlight colors in the application Preferences. This is also accessible from the Highlight button
toolbar-highlight-button
in the Toolbar via the option to Edit Custom Colors
highlight-custom-color
.

  1. Go to the Nitro PDF Pro menu > Preferences > Editing (Command+comma).
  2. Click on the color box
    custom highlight
    at the bottom of the Editing Preferences window.
  3. The macOS System Colors window opens; select a color.

Change the Color of a Strikethrough, Underline or Squiggle

  1. Click the down arrow next to the Highlight button in the Toolbar to reveal the mark-up options. Alternatively, select the Highlight tool (Command+3) tool.
  2. From the Editing bar, locate the Object Properties section and select a Stroke Color
    stroke-color
    from the macOS color palette .
  3. Drag over some text to add a strikethrough, underline, or squiggle.

The chosen color will remain the default color for that tool unless changed.
Delete a Strikethrough, Underline or Squiggle

  1. Select the marked-up text.
  2. Click the down arrow next to the Highlight button
    toolbar-highlight-button
    in the Toolbar to reveal the mark-up options.
  3. Select
    highlight-remove
    Remove. This will remove all strikethroughs, underlines, or squiggles from the selected text. Alternately, access the Remove function by choosing Format > Highlight > Remove (Command+Shift+Option+0).
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