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Highlight PDF

Add translucent rectangular highlights over PDF page areas.

Add a PDF to get started

Drag and drop files here, or choose from your device.

Choose a file to add it to this workspace.

A practical guide

How to use Highlight PDF

  1. Choose a PDF and page to mark.

  2. Draw rectangular highlights and choose a color and opacity.

  3. Save the PDF and review the marked page.

Highlights are flattened overlays

The highlight marks are added as visual overlays to the page. They are not native text-selection annotations and do not change the underlying document text. A mark may cover content depending on its opacity and position.

Processing and limits

Processing stays in your browser. PDFs can be up to 100 MB and 2,000 pages.

Frequently asked questions

Can I select and copy the highlighted text?

The marks are visual overlays, not text-selection annotations. The underlying page text remains separate, but the highlight itself is not a native text annotation.