Are my files uploaded to a server?

No. Every file you select is processed entirely inside your browser using your device's own memory. Nothing is uploaded, stored or shared, so customer documents never leave your computer or phone.

Is there any limit, watermark or sign-up?

No. The tool is free, unlimited and needs no account. Output files carry no watermark of any kind.

Will the marks show in every PDF reader?

Yes. They are drawn into the page itself rather than added as comment bubbles, so every reader shows them.

PDF Editing

Annotate PDF

Highlight, underline, add notes, arrows and drawings.

Runs fully in your browser Free, unlimited, no watermark

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How to use

1Select the PDF.
2Choose a marking tool and drag on the page.
3Press Export annotated PDF and download.

About this tool

Mark up a document before sending it on — highlight the important line, underline a figure, add a short note, draw an arrow or circle an area — and export a PDF that shows the marks in any reader.