Annotate PDF
Collaborate and review drafts with highlighter pens, strikethrough, underlines, and comment boxes.
Select a file for Annotate PDF
Drag & drop your files here, or click to browse
This tool has no options — just add your file and start.
- Creates standard PDF annotations (highlight, underline, strikeout, rectangle, freehand ink and sticky notes) that other PDF readers can show, edit or remove.
How to use Annotate PDF
From upload to download in 3 steps.
- 1
Add your file
Choose or drag a PDF file into the upload area (up to 200 MB each).
- 2
Annotate the pages
Add highlights, underlines, strikeouts, rectangles, freehand drawings, text boxes and sticky notes.
- 3
Save Annotations and download
Click Save Annotations, follow the progress, and download the result. Files are deleted from the server automatically afterwards.
Supported formats
- Input formats
- Output formats
- Limits
- Up to 200 MB per file
- One file per job
- Files are deleted automatically after processing
Why use our Annotate PDF?
Genuine Processing
Real conversions by proven engines — never renamed copies or fake results.
Private by Design
Files are deleted automatically after processing and never used for training.
Free to Use
No account, no subscription and no watermarks on your files.
Frequently Asked Questions
Which file formats does Annotate PDF support?
Annotate PDF accepts PDF files. It produces PDF.
Is there a file size limit?
Each file can be up to 200 MB. Larger files take longer to upload and process.
What happens to my files?
Files are uploaded only when you start processing. They are stored under random names in a private temporary folder, processed, and deleted automatically shortly afterwards — the exact time is shown with your result — or immediately when you click “Delete files now”. Files are never shared or used for training.
How does Annotate PDF work, and what are its limitations?
Creates standard PDF annotations (highlight, underline, strikeout, rectangle, freehand ink and sticky notes) that other PDF readers can show, edit or remove.
Is Annotate PDF free to use?
Yes. Annotate PDF is free, needs no account, and does not add watermarks to your files.
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