PDF tools
Highlight PDF
Highlight text in a PDF online.
Upload a PDF to begin.
Drop a PDF here
or choose one file from your device
Highlight PDF online, free and private
Highlight PDF lets you mark the important parts of a document, like a highlighter pen on paper. Drag across the text you want to highlight, add notes if you need them, then download the highlighted PDF.
How to use Highlight PDF
- 1
Choose the PDF you want to highlight.
- 2
Drag across the text you want to mark.
- 3
Download your highlighted PDF.
Why use PDFDog
Like a highlighter
Drag over words, lines or whole paragraphs to mark them in a few seconds.
Private by design
Your PDF is edited in your browser: it is never uploaded to a server.
Free, no watermark
No account needed, and the PDF you download has no watermark.
Frequently asked questions
How do I highlight text in a PDF?
Choose your PDF, make sure Highlight is selected, then drag across the text you want to mark. Click Download when you are done.
Can I add notes next to the highlights?
Yes. Choose Add text in the toolbar and click where you want to write your note.
Can I undo a highlight?
Yes. Use Undo to remove the last highlight, or select it and delete it.
Is my PDF uploaded?
No. Everything happens in your browser, so your document never leaves your device.