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How to annotate a PDF or image in Preview on iPhone

You can copy, highlight, underline, or strike through text in a PDF file. You can also annotate a PDF or image with stickers, signatures, shapes, or text.

You can pick a highlight color, and images can also get an image description or a loupe. Text you copy can be pasted into another document or app, and any change can be undone.

Here’s how to annotate a PDF or image in Preview on iPhone.

A fillable PDF form with options to highlight and underline text.

Select and copy text

  1. Start the Preview app on your iPhone.
  2. Open a PDF.
  3. To select text, touch and hold the first word and then move the grab points.
  4. To copy the selection, tap Copy.

The text is then ready to paste into another document or app.

Highlight, underline, or strike through text

  1. Start the Preview app on your iPhone.
  2. Open a PDF.
  3. Select and copy text, then tap Highlight.
  4. Choose a highlight color, or tap the underline or strike through button.

Add an annotation

An image open in the Preview app. A menu shows options that can be added to it, such as stickers and text. The Markup, Info, and More buttons appear at the top of the screen, and annotation tools appear at the bottom of the screen.

  1. Start the Preview app on your iPhone.
  2. Open a PDF.
  3. Tap the Markup button and tap the Add button. Then choose an option, such as a sticker, signature, shape, or text. For images, you can also add an image description or a loupe.

To undo a change, tap the More button, then tap Undo.

Tag: Preview