Welcome to Nitro’s Free PDF Reader

A free PDF reader for Windows only*

Download free to create, review, sign, and share PDFs.

Download Nitro's Free PDF Reader

What can Nitro’s free PDF Reader do for you?

Nitro's free PDF reader is the #1 alternative to Adobe Acrobat Reader. Learn more about what makes it the best free PDF reader on the market.


  • Create PDFs from virtually any Windows application and from over 300 file formats.
  • Simply drag-and-drop files to instantly create a document.
  • Customize your PDFs with tools like custom colors, font embedding, page size, orientation, and output quality. Or, keep it simple with preset options.


  • Add comments, address feedback, highlight, underline, or strike-out text to make collaboration a breeze.
  • Quickly view PDFs, add text, and collaborate—without the learning curve—thanks to the intuitive user interface.
  • When you open a PDF with digital signatures, comments, or bookmarks, the review pane will automatically display, helping you know what to review first.


  • QuickSign any document in seconds without leaving your desk.
  • Simply scan or photograph your signature to create your own unique signature profile.
  • Password-protect your documents to keep signatures safe and secure.


  • All PDFs created with Nitro Reader are 100% compatible with other readers—so you can securely share documents with anyone, anywhere, at any time.
  • Colleagues can also create multiple QuickSign profiles, making it easy to share back and forth between teams and businesses.

Nitro products are feature-rich and extremely user friendly, and we saw a significant impact on user productivity.

—Aiden Curran
IT Service Delivery Manager (Europe 1)

Looking to do more with PDFs? Try Nitro Pro 11 instead!

Scan, edit, convert, and secure your documents like a pro. Say hello to premier PDF performance (with a minor price tag).

Nitro's Free PDF Reader vs. Nitro Pro

Free PDF Reader

Nitro Pro

View, print, email, and share PDF files

Convert to and from PDF, MS Word, Excel, PowerPoint formats

Highlight, underline, cross out, and add notes to text and pages

Make scanned PDFs searchable and editable with OCR technology

Edit, insert, delete, crop, replace, and reorder pages

Combine multiple files and file types into one PDF

Permanently and securely redact sensitive information

eSign, collaborate, and share seamlessly with Nitro Cloud integration

Get the Free Reader » Try Nitro Pro for free »

Need to edit, convert, or combine files?

Learn more about PDF editing »

Swap Nitro Reader for a Free Nitro Pro Trial

With our free 14-day trial of Nitro Pro, you'll be able to read, create, edit, convert, sign, and share PDFs-plus much more.

Once the 14 days are up, you'll still be able to create, view, and share PDFs for free. (Don't worry, this isn't a trap.)

Start Your Trial » No credit card required.