Annotate PDF

Add text notes and highlight boxes to a PDF, page by page.

Files never leave your device — annotations are drawn and exported entirely in your browser.

Related tools

How it works

  1. 1

    Choose a PDF

    Up to 50 MB.

  2. 2

    Pick a tool and click the page

    Add text or a highlight box.

  3. 3

    Download the annotated PDF

    Every annotation is drawn permanently onto its page.

FAQ

Can I remove an annotation after placing it?
Yes — every placed annotation is listed below the page preview with its own remove button, until you export.
Can I edit the PDF after downloading?
No — annotations are drawn directly onto the page content, the same as a text/highlight tool in a PDF viewer that "flattens" its marks; there is no separate editable annotation layer.
Does this tool upload my PDF anywhere?
No — annotations are drawn and exported entirely in your browser.

Tool4U.net — every tool runs in your browser. No file ever leaves your device unless the tool says so.

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