Annotate PDF
Add highlights, freehand drawings, rectangles, arrows, text boxes, and notes to a PDF as standard PDF annotations.
Runs in your browser · Files are never uploadedFormats: PDFLimits: 100 MB per file · up to 50 files · 300 MB total
How to use
- 1
Add one PDF file.
- 2
Pick highlight, pen, shapes, text, or notes from the toolbar and mark up the page.
- 3
Click “Save annotations” and download the result.
FAQ
Is my file uploaded?
No. Everything runs in your browser and your file is never stored.
Can the annotations be removed in other apps?
Yes. They are standard PDF annotations, so you can edit or delete them in Acrobat Reader and similar apps. Use Flatten PDF to make them permanent.
Does the highlighter snap to text?
Not yet. It fills the rectangle you drag; it doesn't align to individual words.