Annotate PDF
4.9 (4000+ 
Select PDF File
Or drop it here.
- HTTPS protocol with SSL encrypts file transfers
- Files processed by Amazon Cloud Servers in the US
- Files deleted 20 minutes after leaving the site
Learn more about why PDFgear is free. Still have questions? Feel free to contact us.
Privacy Protected
At PDFgear, your privacy is crucial. Our commitment ensures zero data mishandling. With SSL encryption, we secure your files as you use our online tool to annotate PDFs. All user details are deleted post-use.
Free & No Watermark
It is 100% free, ad-free, with no subscriptions needed. Upholding our transparency promise, we harbor no hidden ads. Seamlessly annotate your PDF, download, and enjoy a watermark-free PDF exporting experience.
No Download & Sign Up
Leverage our online PDF annotator without downloads or installations. Additionally, effortlessly draw, highlight, or mark up your PDF files online without the inconvenience of account registration or credit card required.
Multiple Annotation Options
Beautify your PDF files with an array of markup options including annotations, comments, signatures, highlighting text, adding shapes, and employing handwritten or typewriter input for a personalized touch.
Beyond PDF Annotating
Beyond annotation, PDFgear unveils a slew of functionalities like form filling, interacting with ChatGPT for PDF summarizations, appending signatures, and convert PDFs to/from diverse formats like Word or Excel.
Cross Platform
PDFgear's online tool enables you to annotate and edit PDF files across Linux, Windows, and Mac browsers. For an escalated experience, PDFgear also provides desktop and mobile apps with more advanced features.
Alternative Solution: Freeware to Annotate PDF Offline
PDFgear offers both free online and offline PDF annotator.
| Features | PDFgear Software | PDFgear Online Annotator |
|---|---|---|
| Accessibility | Installation required | Web browser-based |
| File Size Limit | No limit | 50 MB |
| Performance | Fastest | Faster ¹ |
| Internet Requirement | Works without Internet | Internet required |
| Functionality | All-in-one PDF solution to edit, convert, sign, split, merge, compress, etc. | Limited set of annotation tools, only single color brushes |
| User Experience | Advanced and full-featured | Simple and easy to use |
| Data Processing | Files processed on local device | Files processed by cloud servers ² |
| Ideal For | Power users needing advanced features and offline access | Users looking for fast, easy PDF annotation online |
1. Faster: Requires uploading files to the server for processing; speed may vary depending on the size and complexity of the PDF file.
2. Files processed by cloud servers: Your files are uploaded to and processed on AWS US secure cloud servers. Files are deleted immediately after you download them, ensuring data privacy.
How to Annotate PDF Online for Free
1. Upload a PDF File
Click "Select PDF File" or simply drag and drop your PDF to PDFgear online tool.
2. Annotate your PDF
In the menu, select "Add or Edit annotations" on the right to find the annotate options to start your annotating, highlight, and drawing.
3. Download PDF File
After editing, hit "Download File" on the menu's far-right to save your PDF document. And don’t forget to share PDFgear if you like it!
Your Questions Are Answered
Is PDFgear Online PDF Annotator Safe?
Besides being free to use, PDFgear PDF Annotator is entirely safe, clean, and secure. You won’t encounter advertisements or bundled software, and PDFgear has successfully cleared the Microsoft Store’s app validation and safety examinations.
How to Annotate a PDF in Chrome?
No, you cannot directly annotate a PDF file in Chrome. However, there are numerous extensions available that can help you annotate PDFs with ease. For more detailed steps, please refer to a guide on annotating PDF content in Chrome.
How to Annotate a PDF on Mobile Phones and Tablets?
For mobile users seeking more comprehensive PDF editing capabilities, PDFgear for iOS and PDFgear for Android are excellent choices, offering versatile annotation tools for writing, typing or drawing on your PDFs.
Related Tips about PDF Annotating Online
How to Add Notes to PDF Online for Free
This article tells how to add notes and comments to PDFs online using text insertion, sticky notes, comment boxes, and drawing markups.
Add Comments to a PDF Online & Offline
How To Annotate a PDF on Windows PC
Free PDF Annotator & Markup Software, AI-Powered.
Try PDFgear software and app.