Annotate PDF
Add text notes, highlights, underlines and rectangles to PDF pages.
Processed on your device · No sign-upDrop your PDF here
or choose a file from your device
40 MB per file · 80 MB total · processed on your deviceQUICK START
How to use Annotate PDF
- Open your PDF and choose a page.
- Choose the mark, position and size, then add it to the page.
- Review your annotations and create the finished PDF.
GOOD TO KNOW
A few useful details
Marks become permanent page content, not editable PDF comments. Text notes are rendered as images with device fonts, so Gujarati and other supported scripts can be used. Original text remains searchable. Shapes are not secure redaction; use a dedicated redaction tool for private information.
Editing a digitally signed PDF can invalidate its signature. Keep the signed original.
Common questions
Are my files uploaded?
No. Processing happens in your browser. The site downloads its own code, fonts, and processing engines; it does not send your files or passwords to a processing service. Reset or close this tab to release files from the app.
What are the limits?
Up to 40 MB per file, 80 MB in total, and 30 input files per job. PDFs are limited to 200 pages and images to 24 megapixels. Available device memory can impose lower practical limits. Try smaller batches on a phone.
Will my original file change?
No. Each tool creates a new output for you to download. Review the preview and downloaded result before relying on it, especially for important or signed documents.