Highlight PDF

Highlight text in a PDF in your browser with a see-through marker, yellow or any colour. Add notes, boxes and lines too. Free, no sign-up, no upload.

Runs in your browser. Your files are never uploaded. How it works

This page opens Edit PDF with Highlight ready to use. Drag across a line or paragraph to mark it with a see-through colour, just like a highlighter pen. It is handy for study notes, contract reviews and pointing out what matters before you share a document. The PDF stays on your device.

How to highlight a PDF

  1. Click Choose a PDF and pick your file. Type the password if it asks for one.
  2. Drag over the text you want to mark. Change the Colour first if you want something other than yellow.
  3. Move a highlight with Select, remove it with Delete, or step back with Undo.
  4. Click Save edited PDF to download name-edited.pdf.

Mark up a document for review

Want to Use
Mark key passages Highlight
Frame a figure or table Rectangle
Circle a mistake Ellipse
Underline or strike out a line Line
Add a short note Add text
Quick handwritten mark Draw

Tips

  • Use one colour per meaning and stick with it across the document.
  • Highlights drawn on a scan cover the area you drag, so drag from the top of the letters to the bottom for a neat result.
  • To change words rather than mark them, use Edit text on Edit PDF.
  • To check what changed between two versions of a document, try Compare PDF.

Frequently asked questions

Does the highlight hide the text?

No. The highlight colour is blended with the page like a real marker, so the words underneath stay dark and readable, also when printed.

Can I use other colours than yellow?

Yes. Yellow is the default. Pick another colour before drawing, for example green for approved and pink for questions.

Can I highlight a scanned PDF?

Yes. The highlight is drawn as a box over the area you drag, so it works on scans and photos as well as on PDFs made by software.

Can I add a comment next to a highlight?

Yes. Choose Add text and type a short note in the margin, or use Rectangle, Ellipse or Line to point at something.

Is my PDF uploaded?

No. The PDF is opened and saved in your browser, on your device. Nothing is sent to a server.

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