Best Free PDF Openers and Readers for Windows and Mac

Updated: February 2026

PDF (Portable Document Format) files are one of the most common file types you'll encounter, used for everything from resumes and invoices to ebooks and forms. While most modern devices can open PDFs natively, dedicated PDF software offers significantly more features and better performance.

Why Use Dedicated PDF Software?

💡 Pro Tip: Write down the key numbers and values mentioned here – you will need them for comparison.

While web browsers can display PDFs, specialized PDF readers provide:

Annotation tools: Highlight, underline, and add comments
Form filling: Complete and save interactive PDF forms
Better performance: Handle large files more smoothly
Digital signatures: Sign documents electronically
Advanced navigation: Bookmarks, thumbnails, and search functions

Best Free PDF Readers

1. Adobe Acrobat Reader DC (Windows, Mac)

The official PDF reader from Adobe, available at get.adobe.com/reader, remains the most feature-complete free option:

Universal compatibility with all PDF features
Fill and sign PDF forms electronically
Add comments and annotations
Cloud integration for syncing documents
Mobile apps for iOS and Android

The main drawback is that it's heavier on system resources than alternatives, and editing requires the paid Acrobat Pro version.

2. Foxit PDF Reader (Windows, Mac, Linux)

Available at foxit.com/pdf-reader, Foxit is a lighter alternative to Adobe Reader with excellent features:

Faster startup and performance
Tabbed interface for multiple documents
Basic editing capabilities in the free version
ConnectedPDF cloud collaboration features
Smaller installation footprint (under 200MB)

Foxit strikes an excellent balance between features and performance, making it popular among professionals.

3. Sumatra PDF (Windows) - Minimalist Champion

Download from sumatrapdfreader.org for an incredibly lightweight experience:

Extremely fast startup (under 1 second)
Minimal RAM usage (under 10MB)
Portable version available (no installation needed)
Supports ebooks (ePub, MOBI) and comic books (CBZ, CBR)
No bloatware or unnecessary features

Sumatra PDF is perfect if you just need to view PDFs quickly without annotations or editing. It's the go-to choice for older computers or users who value speed.

4. PDF-XChange Editor (Windows)

From pdf-xchange.com, this free version includes surprising editing capabilities:

Add and edit text directly in PDFs
OCR (Optical Character Recognition) for scanned documents
Create PDFs from other file formats
Advanced annotation tools
Customizable ribbon interface

The free version watermarks some advanced features, but basic editing remains unlimited and watermark-free.

5. Okular (Windows, Mac, Linux)

Part of the KDE project, available at okular.kde.org:

Completely open-source and free
Supports multiple document formats
Annotation and form-filling capabilities
Active development and community support
No ads or upsell prompts

Browser-Based PDF Viewing

Modern browsers have built-in PDF viewers:

Google Chrome:

Automatic PDF opening in browser tabs
Basic annotation and printing
No installation required
Limited features compared to dedicated software

Microsoft Edge:

Built-in PDF reader with annotation tools
Add text and drawings
Read aloud feature for accessibility
Faster than Chrome for PDFs on Windows

Firefox:

Native PDF viewing with form filling
Print and save options
Privacy-focused (no data tracking)

Browser viewers are convenient for quick viewing but lack the power features of dedicated software.

Free PDF Editors (Limited Functionality)

While fully featured PDF editing requires paid software, these free tools offer basic editing:

1. LibreOffice Draw (Windows, Mac, Linux)

Part of the free LibreOffice suite
Open and edit PDF content directly
Rearrange pages and modify text
Export back to PDF format

Download from libreoffice.org - it's completely free and open-source.

2. Sejda PDF Editor (Online)

Web-based editor at sejda.com/pdf-editor
Edit text, images, and links in PDFs
Merge, split, and compress PDFs
Free tier allows 3 tasks per day
No installation required

3. PDFescape (Online)

Browser-based editing at pdfescape.com
Fill forms, add annotations, and insert images
Free for PDFs under 10MB and 100 pages
Create new PDF documents from scratch

Step-by-Step: Installing and Setting Default PDF Reader

Windows Installation:

Download your chosen PDF reader from the official website
Run the installer and follow prompts
Right-click any PDF file
Select "Open with" > "Choose another app"
Select your installed PDF reader
Check "Always use this app to open .pdf files"
Click OK

Mac Installation:

Download the Mac version of your PDF reader
Open the downloaded DMG file
Drag the app to your Applications folder
Right-click any PDF file in Finder
Select "Get Info"
Under "Open with," select your PDF reader
Click "Change All" to apply to all PDFs

Converting Other Files to PDF

Most free PDF readers can also create PDFs from other formats:

Using Built-in Print Function:

Open any document (Word, image, webpage)
Press Ctrl+P (Windows) or Cmd+P (Mac)
Select "Microsoft Print to PDF" or "Save as PDF"
Choose your save location and filename
Click Save

Using LibreOffice:

Open your document in LibreOffice Writer
Go to File > Export as PDF
Configure PDF options (compression, security)
Click Export

Mobile PDF Readers

Android:

Adobe Acrobat Reader: Full-featured, syncs with desktop
Xodo PDF: Lightweight with annotation tools
Google PDF Viewer: Simple, built into Android

iOS:

Apple Books: Built-in, excellent for reading
Adobe Acrobat Reader: Cross-platform syncing
PDF Expert: Premium features, free trial available

Security and Privacy Considerations

PDF files can contain malicious code or tracking elements:

Disable JavaScript: In Adobe Reader, go to Edit > Preferences > JavaScript and uncheck "Enable JavaScript"
Update regularly: Keep your PDF reader updated to patch security vulnerabilities
Scan suspicious PDFs: Use antivirus software before opening PDFs from unknown sources
Be cautious with forms: Don't fill in forms from untrusted sources - they might harvest your data

Troubleshooting Common PDF Issues

PDF won't open:

File might be corrupted - try downloading again
Your PDF reader might be outdated - update to latest version
File might be password-protected - obtain password from sender

Text appears garbled:

Missing fonts - try opening in Adobe Reader which has comprehensive font support
Encoding issue - try a different PDF reader

Can't print PDF:

PDF might have printing restrictions - contact document owner
Try printing as image (slower but works around issues)
Update your printer drivers

Choosing the right PDF reader depends on your needs: Adobe for compatibility, Foxit for balance, Sumatra for speed, and PDF-XChange for free editing. All are excellent free tools that handle PDFs effectively.

Key Takeaway: With the information in this guide about Best Free PDF Openers and Readers for Windows and Mac, you are well-prepared to handle this topic confidently. Remember to start with the basics and work your way up if needed.

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Frequently Asked Questions about Best Free PDF Openers and Readers for Windows and Mac

Is Best Free PDF Openers and Readers for Windows and Mac suitable for beginners?

Yes, absolutely. Our guide to Best Free PDF Openers and Readers for Windows and Mac explains all basics clearly.

How much does Best Free PDF Openers and Readers for Windows and Mac cost?

Costs vary depending on the provider. A comparison is always worth it.

Where can I find more information?

Right here in our expert area for File Extensions Guide.