Top Free Tools to Merge or Split PDFs in 2025

Introduction: PDF Chaos, Solved

PDFs are great—until you need to merge ten files into one or split a 100-page document into manageable chunks. That’s where free PDF tools come to the rescue. Whether you’re a student, a freelancer, or managing business documents, this guide covers the best free tools to merge or split PDFs quickly and securely.


Why You Need PDF Merging and Splitting Tools

PDFs are the go-to format for sharing documents, but editing them can be a hassle. Here’s when you might need these tools:

  • Combining multiple reports into one file
  • Extracting only the relevant pages from a large document
  • Splitting scanned files or eBooks for easier navigation

Doing this manually? Not efficient. Luckily, these tools are.


Best Free Tools to Merge or Split PDFs

1. PDFsam Basic (Windows, macOS, Linux)

What It Does: An open-source desktop tool that lets you merge, split, rotate, and extract pages from PDFs.

Key Features:

  • Works offline
  • No file size limits
  • Reliable for batch processing

Best For: Privacy-focused users who prefer local software.

2. iLovePDF (Web-based)

What It Does: An all-in-one online platform for editing and managing PDFs.

Key Features:

  • Merge and split PDFs in seconds
  • Drag-and-drop interface
  • Google Drive and Dropbox integration

Bonus: Offers mobile apps for PDF edits on the go.

3. PDF24 Tools (Web-based + Desktop App)

What It Does: Free online tools with optional desktop versions.

Key Features:

  • No sign-up required
  • Secure file handling (auto-delete after use)
  • Merge, split, compress, and convert PDFs

Ideal For: Quick, no-fuss PDF tasks in your browser.

4. Smallpdf (Web-based, Limited Free Tier)

What It Does: Clean UI and reliable performance for essential PDF tasks.

Key Features:

  • Fast merge and split functionality
  • Available Chrome extension
  • Basic editing tools included

Heads-Up: Free users are limited to two tasks per day.

5. Sejda PDF (Web + Desktop)

What It Does: A full-featured PDF editor with generous free limits.

Key Features:

  • Merge, split, compress, and edit PDFs
  • Keeps files private (auto-deletes after 2 hours)
  • No watermarks on output

Great For: Occasional users who need high-quality results.


Choosing the Right Tool

Not sure which one to pick? Here’s a quick breakdown:

ToolBest ForWorks OfflineDaily Limits
PDFsamFull privacy, batch jobsYesNone
iLovePDFCloud sync, mobile accessNoSome features limited
PDF24Desktop + web flexibilityYesNo major limits
SmallpdfSimple, sleek UINo2 tasks/day
SejdaHigh output qualityYes3 tasks/hour


Conclusion: Simplify Your PDF Workflow

Handling PDFs doesn’t have to be frustrating. With the right free tools, you can merge or split PDF files in seconds, saving time and energy. Whether you want full privacy, cloud access, or high-volume editing, there’s a tool on this list that fits the bill.

What’s your go-to PDF tool? Share it in the comments or check out our guide to converting PDFs to other formats.

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