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- Stays on this device
- No watermark
- Works offline
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Annotate PDF
Highlight, underline and strike through text in a PDF, draw freehand, add shapes, arrows and comments. They are saved as real PDF annotations, so they stay editable in Acrobat and other readers. Free, and nothing is uploaded.
How to annotate a PDF online
- 1Drop your PDF in, or click to choose it
- 2Pick a tool and a colour, then drag on the page
- 3Press Save PDF to download the marked-up file
- A PDF with your marks as editable annotations.
What happens to your files
- Nothing is uploaded.Your PDF is opened and changed by your browser, on your own device.
- Marked in your browser.The file is read and changed on your device and is not sent anywhere.
- Real annotations.Highlights and notes stay objects, not flattened ink, so others can move or delete them.
What you can do
- Highlight, underline or strike through text by dragging over it. On a scanned page, drag an area instead.
- Draw freehand, or add rectangles, ellipses, lines and arrows in thin, medium or thick strokes.
- Click the page to add a comment, and double-click it later to change the text.
- Use the Select tool to pick any annotation, also ones that were already in the file, then drag it or press Delete.
- Choose between several highlight and ink colours, and undo a step if it went wrong.
Good to know
- Annotations sit on top of the page and do not change the text underneath. To remove content for good, use "Redact PDF".
- To make marks permanent so nobody can edit them, flatten the PDF afterwards.
- Highlighting text needs real text in the PDF. On scans, an area highlight is the way.
- A password-protected PDF has to be opened without the password first.
Questions
How do I highlight text in a PDF online?
Open it here, choose the highlighter and drag over the words. Save the PDF when you are done.
Will my annotations show in other PDF readers?
Yes. They are standard PDF annotations, so Acrobat, Preview and browsers show them and can edit them.
Can I add a comment to a PDF?
Yes. Choose the comment tool, click where it belongs and type your note.
Is my PDF uploaded?
No. Everything runs in your browser.