Private online tool
Annotate PDF
Review and mark up a PDF using a focused browser editor that keeps the document local.
or drag and drop
Files stay on this device · Nothing is uploaded
Local processing No document uploads Free preview
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About this tool
How Annotate PDF works
Review a PDF with text boxes, freehand drawing, lines, eraser strokes, highlights, and selected-text strike marks.
Step by step
- 1Choose a PDF and let the editor open on page one.
- 2Use Text, Draw, Highlight, or native-text selection to add review markup.
- 3Review the continuous document and download the annotated result.
Details and common questions
Which files are supported?
One PDF.
What result will I receive?
One annotated PDF.
What should I know before using it?
- Native text selection requires embedded searchable text.
- Freehand, highlight, and eraser layers remain page-local.
- Annotations are visual editor overlays rather than a collaborative comment system.
Can I copy text from the PDF?
Yes, when the PDF contains embedded searchable text. Scanned pages require OCR, which is not currently included.
Do repeated highlights become darker?
The editor consolidates highlights into a uniform-opacity layer to avoid unwanted stacking.