Draw, highlight, and add text annotations to PDF pages. All processing stays in your browser.
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Annotate with drawings, highlights, and text
Mark up any PDF with highlights, text notes, and drawings. Whether you're reviewing a document, leaving feedback on a design, or studying course material, this tool lets you add visual annotations directly on the page. The annotations are burned into the PDF so the recipient sees them in any viewer.
Highlight Tool
Draw semi-transparent rectangles over text to highlight important passages in your chosen color.
Text Notes
Add typed text annotations anywhere on the page — ideal for comments and feedback.
Freehand Drawing
Sketch circles, arrows, or marks with mouse or touchscreen for quick visual callouts.
Color Picker
Choose any color for your annotations so you can color-code comments by topic or priority.