Annotate PDF
Related tools
Watermark PDF
Stamp text such as CONFIDENTIAL or DRAFT on pages.
Add Page Numbers
Number pages with your choice of position and format.
How to use Annotate PDF
- Choose a PDF file.
- Pick Text, Highlight, Box or Line and click the page to add it.
- Drag to move; use the options panel to edit text, size and colour.
- Select Save PDF and download.
What to expect
Your annotations are added on top of the page content in a new PDF.
- Annotations cover content visually but do not remove what is underneath — a black box is not a redaction.
- Existing PDF text cannot be edited.
Frequently asked questions
How do I add text and highlights to a PDF?
Choose a PDF, pick a tool (Text, Highlight, Box or Line), click on the page to place it, then drag to move and adjust size and colour. Select Save PDF to download an annotated copy.
Can I use a black box to hide sensitive information?
No. A box only covers content visually; the original text stays inside the file and can be copied. Proper redaction requires removing the underlying data.
Can I edit the existing text in my PDF?
No. You can add new text on top. To change the original text, convert with PDF to Word, edit, then convert back.
Do I need to create an account?
No. Every tool works without sign-up or login.
Is it safe for confidential documents?
Files are processed locally in your browser and never uploaded. Close the tab or select Clear to release them from memory.