iPad users can annotate PDFs directly in Safari without downloading any app — including Apple Pencil support for freehand annotations.
Navigate to pdfeditor.onl/pdf-studio in Safari.
Upload your PDF. Use the annotation toolbar: highlight text with the Highlight tool, add text notes with the Text tool, draw freehand with the Draw tool (Apple Pencil works natively for precise annotations).
Tip: With Apple Pencil on iPad, the Draw tool provides pressure-sensitive annotation for natural-looking markup. Perfect for reviewing academic papers or contracts.
Click Download PDF. All annotations are permanently embedded in the output file.
Yes. The drawing canvas in pdfeditor.onl supports Apple Pencil input for precise freehand annotations.
Yes — completely free in Safari on any iPad model.