Annotate PDF
Mark up a PDF with highlights and freehand drawing. Review, emphasize and comment visually, then save the annotated file.
🔒 Runs 100% in your browser — files never uploaded
Select your PDF
or drag & drop a file here
🔒 Runs entirely in your browser. Your document is never uploaded.
How to annotate pdf
- 1
Select your PDF.
- 2
Pick highlight or pen and mark up the pages.
- 3
Click Save and download the annotated PDF.
Frequently asked questions
How do I annotate a PDF for free?
Open your PDF here, choose the highlighter or pen, mark up the pages, then download the annotated PDF. It works entirely in your browser.
Can I highlight text in a scanned PDF?
Yes. The highlighter and pen draw on top of the page, so they work on both text PDFs and scanned image PDFs.
Will my annotations be saved into the file?
Yes. When you save, the highlights and drawings are drawn into the page so they show in every PDF reader.
Are my files uploaded?
No. Annotation runs in your browser, so your PDF stays on your device.
Is it free?
Yes, free with no watermark and no sign-up.
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