Edit PDFs with comments online for free

Work with PDFs online

Use Acrobat online services to convert Microsoft Word, Excel, and PowerPoint files to PDF in any browser. You can also convert images, fill and sign forms, and comment on files.

Do more with your PDFs

Do you need to convert, combine, annotate, fill, sign, and share files? Subscribe to Adobe Acrobat PDF Pack for a set of online tools.

Get the best with Adobe

Adobe invented the PDF format. Come back later to add comments to another file. Or sign in to do more with your stored files.

Edit PDF documents fast

It's easy to add comments, text, and freehand drawings to your PDF files with Adobe Acrobat online services. Upload a file and sign in to annotate it. Then download or share it.

Add comments from anywhere

You can add comments to your file from any web browser — like Google Chrome, Safari, or Firefox — when you try our online PDF editor.

A PDF editor you can trust

Adobe invented the PDF format. When you use Acrobat online tools to edit PDF files, you can share your comments with confidence.

How to annotate PDFs online

Follow these easy steps to add comments to a file online:

Click the Select a file button above, or drag and drop a file into the drop zone.
Select the PDF document you want to annotate.
After Acrobat uploads the file, sign in to add your comments.
Use the toolbar to add sticky notes, text, and freehand drawings.
Download your annotated file or get a link to share it.

What types of tools can I use to edit PDFs for free?

Acrobat online services let you add comments, text, and drawings to PDFs for free when you sign in. Use our free PDF editor to add sticky notes or text anywhere in the file. You can also highlight, strike through, or underline content. Use the drawing tool to freehand draw whatever you want, including lines, shapes, and arrows in your desired color.

For advanced PDF editing tools, try Adobe Acrobat Pro DC for free for seven days on the Windows or Mac operating system. Edit text by fixing a typo or swapping out PDF text. You can also move, rotate, flip, and add images, as well as add page numbers or watermarks. In addition, your free trial lets you edit scans with optical character recognition (OCR), create PDFs from almost any file format, create PDF forms, sign PDFs, organize PDF pages, reduce file size, secure PDFs with passwords, and convert PDFs to Microsoft Excel, PowerPoint, and Word documents.