PDF UtilitiesPDF EditorFree Tool

Highlight PDF Text

Highlight and annotate text in a PDF with coloured highlight marks, underlines, or strikethroughs. Add sticky note comments to flagged passages for review and collaboration.

How to Use Highlight PDF Text
  1. 1Upload the PDF you want to annotate
  2. 2Select the Highlight tool and drag over the text you want to mark
  3. 3Choose the highlight colour from the colour picker
  4. 4Optionally add a sticky note comment to the highlighted passage
  5. 5Click 'Save PDF' and download the annotated document
Examples
  • Highlight key clauses in a contract PDF before sending for legal review
  • Mark up important passages in a research paper PDF for citation
  • Highlight discrepancies in a financial statement PDF during an audit review
  • Annotate a student essay PDF with highlighted feedback passages before returning
Frequently Asked Questions

You can highlight text in yellow, green, blue, or pink; underline text; apply strikethrough; and add sticky note pop-up comments to any position on the page.

Yes. Highlights and annotations are saved in the PDF as standard annotation objects and are visible in any PDF reader.

Yes, though annotations from different reviewers need to be merged. Each reviewer works on their own copy and annotations are combined in a final step.

The underlying text is unchanged and remains searchable. Highlights only add a coloured overlay.

Yes. Click on any highlight to select it, then delete it or change its colour and comment.

Yes. All annotation processing runs in your browser. Your PDF is never uploaded to any server.

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