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Annotate PDF Online

Annotate your PDF documents with our free online tool. Add comments, highlights, drawings, shapes, icons, and form fields to your files. Whether you are reviewing a contract or marking up study notes, our easy-to-use editor lets you communicate your feedback clearly.

Drag & Drop Your Files Here

Support for PDF, Word, Excel, PowerPoint, and Images. Secure processing up to 100MB.

PDF DOC DOCX RTF PPT PPTX JPEG JPG PNG JFIF BMP WEBP TIFF GIF HEIC HEIF XLS XLSX CSV TXT ODT MD DXF DWG XPS OXPS AI CBZ CBR DJVU DJV EPUB MOBI AZW AZW3 FB2 CHM PAGES WPS HWP XML EML
Highlighting & Markup

Easily highlight important text, add underline or strikethrough to review documents effectively and emphasize key points.

Freehand Drawing

Draw freely on your PDF to circle items, add signatures, or make quick notes directly on the page.

Comments & Forms

Insert sticky notes, text boxes, and interactive form fields like checkboxes and radio buttons to complete your documents.

Shapes & Visuals

Enhance your PDF with geometric shapes, professional icons, and charts to visualize data and draw attention.

Secure Processing

Your files are processed securely using 256-bit SSL encryption and deleted automatically from our servers after 2 hours.

Cross-Platform

Annotate PDFs from any device—desktop, tablet, or mobile—directly in your browser without installing any software.

Frequently Asked Questions

Upload your PDF, select the annotation tool you need (highlight, draw, text) from the toolbar, apply your markups, and click "Annotate PDF" to save and download.

Yes, our annotation tool is completely free to use. You can annotate as many files as you like without any hidden costs.

Yes, once you apply your annotations and download the file, all your highlights, drawings, and comments are permanently saved within the PDF.

Absolutely. We prioritized your privacy. All uploaded files are encrypted and automatically deleted from our servers permanently after 2 hours.