Comprehensive PDF annotation: add typed text, highlight regions in any color, draw freehand with adjustable thickness, add sticky-note comments, and place shape annotations (rectangles, ellipses). All annotations export as part of the PDF and remain editable if you re-import the file.
When to use this
Use for: reviewing PDFs in a remote team (annotations replace email comments), marking up homework / exam papers for students, code-review-style PDF annotations on technical docs, preparing PDFs for sign-off with highlight + comment + signature stamp.
Frequently Asked Questions
Do annotations stay editable after saving?
Yes - annotations are stored as PDF annotation objects (not flattened pixels). Re-open the PDF in our editor and you can edit, move, or delete each annotation. Use 'Flatten PDF' if you want to lock them permanently before sharing.
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