Private online tool
Mark Up PDF
Mark up a PDF with text, freehand drawing, highlights, and strike marks for visual review.
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 Mark Up PDF works
Mark up a PDF with text, freehand drawing, highlights, and strike marks for visual review.
Use a review-oriented entrance to the annotation editor when you need to communicate changes rather than rewrite the source.
Step by step
- 1Choose the PDF to review.
- 2Select Text, Draw, Highlight, or searchable text marks.
- 3Review the markup and download the PDF.
Common uses
- Review a draft
- Mark requested changes
- Annotate study material
Details and common questions
Which files are supported?
One PDF.
What result will I receive?
One PDF containing the changes you choose to make.
What should I know before using it?
- Markup is visual rather than collaborative comments.
- Text selection requires embedded searchable text.
- Desktop sessions support up to 200 pages or 100 MB; mobile sessions support up to 100 pages or 30 MB.
Can other people reply to markup?
No. The current output contains visual marks, not a collaborative comment thread.
Can I mark up scanned pages?
Yes with visual drawing, text, and highlight overlays; native text selection requires OCR.