Annotate PDF
Highlight, draw, and add text notes on a PDF.
Drag & drop files here, or click to choose
.pdf · up to 1 file
🔒 This tool runs in your browser — files are never uploaded.
Runs 100% in your browser — your files never leave your device.
About this tool
Annotate PDF lets you highlight text, draw, and add notes directly on a document — perfect for marking up a contract, giving feedback, or studying. Your annotations are saved into the PDF so anyone can see them.
How it works
- Choose your .pdf file
- Pick your options
- Download the result
Frequently asked questions
How do I highlight and add notes to a PDF?
Open the PDF, use the highlight, draw, and text tools to mark it up, and download the annotated file.
Can I draw on a PDF freehand?
Yes — use the pen tool to draw or circle anything on the page.
Will the recipient see my annotations?
Yes — they're saved into the PDF, so they show in any viewer.
Is it free and private?
Yes — it runs in your browser, so your document never leaves your device. No watermark.