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Add annotations, comments, highlights, and notes to PDF documents. Full annotation toolset.
Drop your files here
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Supports: PDF • Max: 100MB
Annotate PDF provides tools to highlight text, underline key passages, add sticky notes, and draw callouts on PDF documents.
Collaborate on document reviews, student essay feedback, and technical architectural blueprints.
Customize annotation colors, stroke width, and text font styles with an intuitive markup toolbar.
Annotations are embedded as standard PDF markup objects compatible with Adobe Acrobat and Preview.
Fast, responsive in-browser canvas renders edits in real time.
Understanding Annotate PDF is essential for streamlined document management. PDFMate processes pdf files and outputs high-quality pdf documents using modern serverless infrastructure built for speed, precision, and privacy.
All operations performed on Annotate PDF execute with 256-bit SSL encryption. Uploaded files up to 100MB are processed 100% in volatile memory and are never stored on server storage or saved to disk.
Whether working on desktop computers, laptops, tablets, or smartphones, PDFMate's responsive web architecture ensures smooth document workflows without requiring software installations or user accounts.
Include text highlights, underline markup, strikethrough, sticky note comments, and freehand drawing.
Yes! Annotations are saved as standard ISO-compliant PDF annotation streams.
Yes, choose from yellow, green, blue, pink, and custom palette colors.
Yes, you can draw and annotate smoothly using stylus devices on tablets.
Processing occurs in volatile RAM and files are deleted immediately after download.
Yes, 100% free with no registration.
Process, merge, and edit PDFs directly on your smartphone.