Free PDF Splitter & Merger Online - Split & Merge PDFs Fast

What is a PDF splitter and how does it work?

A PDF splitter online is a tool that breaks down large PDF documents into smaller, more manageable files. Our free PDF splitter works entirely in your browser using advanced PDF processing algorithms - no software download required. Unlike traditional PDF splitter software, you can split by individual pages, extract specific page ranges (e.g., pages 1-10), or separate every page into individual PDF files. Whether you need to split PDF documents for sharing, extract chapters from textbooks, or divide large reports into sections, our PDF splitter tool handles it all while maintaining 100% document quality and formatting.

How do I merge multiple PDFs into one document?

Our PDF merger free tool makes combining documents simple and fast. To merge PDF online: (1) Click "Merge PDFs" mode, (2) Upload multiple PDF files by clicking or drag-and-drop, (3) Arrange them in your desired order by dragging, (4) Click merge button. The PDF merger online free processes all files locally in your browser and creates a single, professional document. Unlike other online PDF merger tools that limit file counts, you can merge unlimited PDFs - combine 2 files or 200 files with no restrictions. Perfect for merging reports, combining invoices, creating document packages, or compiling research materials.

Is it safe to use online PDF splitter and merger tools?

Yes, our PDF splitter online and PDF merger free tools prioritize user privacy and security by operating entirely within your browser. Your files never leave your device, ensuring complete privacy and security. We don't store, track, or transmit any of your data, making our tools safe for sensitive documents, confidential business materials, and legal files. This client-side processing eliminates concerns about data breaches, unauthorized access, or unwanted data collection.

Can I split a PDF by specific page ranges?

Absolutely! Our PDF splitter online supports flexible page range selection - one of the most requested features. Select "Page Range" mode, upload your PDF, enter start and end pages (like pages 5-10), and extract that exact section. You can also split PDF pages into individual files (separates every page), or extract specific non-consecutive pages (e.g., pages 1, 5, 10, 15). This makes our free online PDF splitter perfect for extracting book chapters, separating contract sections, pulling specific slides from presentations, or creating custom document excerpts. All while maintaining original formatting and quality.

What's the maximum file size for PDF splitting and merging?

Our PDF splitter online and PDF merger free tools can handle large files, with limits depending on your browser's memory capacity. Most modern browsers support files up to several hundred megabytes. For very large documents (100MB+), processing may take longer but the tools remain fully functional. All processing happens locally in your browser, so there are no server-side file size restrictions or upload limits.

How can PDF splitter and merger tools improve my workflow?

PDF splitter online and PDF merger free tools significantly improve business workflows by automating document organization tasks. Split large contracts to share relevant sections with different teams, merge monthly reports into quarterly summaries, combine client deliverables into comprehensive packages, organize project documentation, and streamline file distribution. These tools save hours of manual work while ensuring professional, consistent results. They're essential for anyone who regularly handles PDF documents in business, education, or personal projects.

Can I reorder pages when merging PDFs?

Yes! Our PDF merger free tool includes an intuitive drag-and-drop interface that lets you reorder files before merging. Simply upload your PDFs to the online PDF merger, then drag them up or down to arrange in your preferred sequence. This is crucial when you need to merge PDF documents in a specific order - organizing book chapters sequentially, arranging invoices chronologically, combining reports in logical flow, or creating custom presentations. Unlike basic PDF merger tools, we show you the exact order before processing, so the final merged PDF matches your exact specifications. Perfect for professional document compilation.

Does splitting or merging PDFs reduce document quality?

No! Our PDF splitter online and PDF merger free tools preserve 100% of your document's original quality. All text, images, formatting, fonts, and layouts remain identical to the source files. The tools use lossless processing techniques that maintain document integrity throughout the split or merge operation. Whether you're working with scanned documents, text-based PDFs, or files containing complex graphics, the output quality matches the input quality perfectly.

What makes this PDF splitter and merger better than others?

Our PDF splitter online and PDF merger free tools stand out from competitors like Adobe PDF splitter, Smallpdf PDF splitter, or i love PDF splitter through several key advantages: (1) 100% free with no watermarks or limits, (2) Complete privacy - files never uploaded to servers, (3) No software installation required, (4) Works on all devices - Windows, Mac, Linux, tablets, phones, (5) Unlimited file sizes and page counts, (6) Advanced features like drag-drop reordering, page range selection, and batch processing. While paid PDF splitter software charges monthly fees and other free PDF splitter tools add limitations, we provide enterprise-level features completely free forever.

Can I use PDF splitter and merger tools for business documents?

Absolutely! Our PDF splitter online and PDF merger free tools are designed for professional use and handle business documents with complete security. Split contracts, merge invoices, combine reports, organize proposals, extract pages from presentations, and manage legal documents confidently. The browser-based processing ensures confidential business information never leaves your device, making these tools suitable for handling sensitive contracts, financial documents, and proprietary materials. Many businesses integrate these tools into their standard document management workflows.

How do I choose between splitting and merging PDFs?

Use our PDF splitter online when you need to break down large documents into smaller sections — ideal for extracting specific chapters, sharing relevant pages, or creating focused excerpts. Use our PDF merger free tool when you need to combine multiple documents into one file — perfect for creating comprehensive reports, combining monthly summaries, or packaging client deliverables. Both tools work together to provide complete document management capabilities. Many users employ both tools in their workflows: splitting source documents to extract relevant sections, then merging those sections with other materials to create custom packages.

Are there any limitations on how many PDFs I can merge?

Our PDF merger free tool has no artificial limits on the number of files you can combine. You can merge 2 PDFs or 200 PDFs in a single operation, limited only by your browser's memory capacity. The tool efficiently handles large merging operations while maintaining processing speed and document quality. For best performance with very large merge operations (50+ files), ensure you have sufficient RAM and use a modern browser like Chrome, Firefox, or Edge.

What file formats are supported besides PDF?

Our PDF splitter online and PDF merger free tools are optimized specifically for PDF files to ensure the best quality and compatibility. We focus exclusively on PDF processing to deliver professional results with reliable formatting preservation. If you have documents in other formats (Word, Excel, images), we recommend converting them to PDF first using dedicated conversion tools, then using our splitter or merger for document organization.

How to split PDF file into multiple files?

To split PDF file into multiple files: (1) Click "Split PDF" mode on our tool, (2) Upload your PDF file, (3) Choose "All Pages" to split every page into separate files, or select "Page Range" to extract specific sections. For example, if you have a 50-page document and want pages 1-10 in one file and 11-20 in another, use the page range feature twice. Our free PDF splitter processes your document and downloads each section as a separate file. This is perfect for dividing large reports into chapters, separating sections of contracts, or breaking down presentations into individual topics.

How to split a PDF into two parts?

To split a PDF into two parts, use our "Page Range" feature: First, upload your PDF and note the total page count. Then, decide where to split (for example, at page 25 of a 50-page document). Extract pages 1-25 as the first part, then extract pages 26-50 as the second part. Each extraction creates a separate PDF file. This method is ideal when you need to divide PDF files for sharing - like splitting a large report into executive summary and detailed analysis sections, or separating a combined invoice into individual billing periods.

How to separate a page from PDF file?

To separate a single page from a PDF file, upload your document to our PDF splitter online tool, select "Extract Pages" mode, and enter the specific page number you want to extract (e.g., page 5). The tool will create a new PDF containing only that page. You can also extract multiple non-consecutive pages by entering comma-separated numbers (e.g., 2, 5, 8, 12). This is extremely useful when you need to pull out a single contract page, extract a specific invoice from a batch, or isolate an important chart or diagram from a lengthy report.

Can you split a PDF without any limitations?

Yes! Our free PDF splitter has no limitations on file count, page count, or number of splits per day. Unlike premium services that restrict free users to 2-3 files daily or paid software requiring subscriptions, you can split unlimited PDFs completely free. Split a 10-page document or a 1000-page document - there are no restrictions. You can also split the same file multiple times in different ways, extract as many pages as needed, and use the tool as frequently as required. Perfect for businesses processing dozens of documents daily or students working on multiple projects.

How to split PDF files online for free?

To split PDF files online free: Visit our tool, click "Split PDF" mode, upload your file (no account required), choose your split method (all pages, page range, or extract specific pages), and click split. The tool processes everything in your browser - no upload to external servers, no email registration, no credit card needed. Download your split files immediately. Unlike other "free" PDF splitters that require sign-up after the first file or add watermarks, our tool is genuinely free forever with all features unlocked. Perfect for quick one-time tasks or regular document management.

How to split PDF on Mac without additional software?

Mac users can split PDF files using our online tool without installing any software. Simply open Safari, Chrome, or any browser on your Mac, visit our PDF splitter online, and upload your file. The tool works natively in the browser, taking advantage of macOS's excellent PDF handling capabilities. No need to download PDF splitter software, no compatibility issues, no storage space wasted. Our tool is fully compatible with macOS and works on Mac, MacBook Air, MacBook Pro, and iMac. It even works on iPads with Safari, making it the most convenient PDF splitting solution for Apple users.

How to split PDF in Adobe vs our free tool?

Adobe Acrobat offers PDF splitting but requires either purchasing the full Acrobat DC ($19.99/month) or using Adobe Acrobat Reader with limited features. Adobe's online service also requires account creation. Our free PDF splitter provides the same core functionality without cost or sign-up: split by pages, extract ranges, separate all pages. The main advantages of our tool: (1) Completely free forever, (2) No software installation, (3) Works in browser, (4) No account needed, (5) Privacy-focused - files stay local. While Adobe offers advanced features for professional publishers, our tool covers 95% of common splitting needs that home users and small businesses require daily.

How to merge PDF files into one file?

To merge PDF files into one: (1) Switch to "Merge PDFs" mode, (2) Upload your first PDF file, (3) Upload additional PDF files - you can add as many as needed, (4) Arrange them in order by dragging, (5) Click "Merge PDFs" button. The tool combines all files into a single PDF maintaining the order you specified. All pages, formatting, images, and bookmarks are preserved. This is perfect for combining monthly reports into a yearly summary, merging multiple invoices for accounting, compiling chapters into a complete manuscript, or creating comprehensive client proposals from separate documents.

Is PDF merger and splitter safe to use?

Yes, our PDF merger and splitter is completely safe. Unlike cloud-based tools that upload your files to remote servers (creating security risks), our tool processes everything locally in your browser using JavaScript and WebAssembly. Your PDF files never leave your computer - they're not uploaded, stored, or transmitted anywhere. This makes it 100% safe for confidential documents like legal contracts, financial statements, medical records, or proprietary business materials. The tool doesn't collect personal data, doesn't track usage, and doesn't require email registration. It's as safe as using native desktop software, but more convenient.

Can I split PDF into multiple files with different page ranges?

Yes! To split one PDF into multiple files with different page ranges, use our tool multiple times: First extraction - pages 1-10, second extraction - pages 11-25, third extraction - pages 26-50, etc. Upload your original PDF for each extraction and specify different page ranges. While this requires multiple operations, it gives you complete control over how the document is divided. This is ideal for complex documents like textbooks (split by chapters), legal documents (split by sections), or combined reports (split by departments). Each extraction creates a separate PDF file with exactly the pages you specified.

How to break PDF file into separate pages?

To break a PDF file into separate pages (one page per file): Upload your PDF, select "Split PDF" mode, choose "All Pages" option, and click split. The tool will process your document and create individual PDF files for each page (page-1.pdf, page-2.pdf, page-3.pdf, etc.). For a 20-page document, you'll get 20 separate files. This is particularly useful when you need to distribute individual pages to different people, extract specific pages for forms, create single-page graphics from multi-page documents, or when working with scanned documents where each page needs individual processing or editing.

How to divide PDF file into parts for easier sharing?

To divide large PDF files into smaller parts for email or sharing: First, determine how many pages per part you need (many email systems limit attachments to 10-25MB). If you have a 100-page document, split it into 4 parts of 25 pages each: Extract pages 1-25, then 26-50, then 51-75, then 76-100. Each part will be a smaller file size suitable for emailing. This method is essential when sharing large reports, presentations, or documents with colleagues who have email size restrictions. You can also name each part descriptively (Part1-Introduction.pdf, Part2-Analysis.pdf) for better organization.

Can PDF creator or Nitro PDF split files as well as our tool?

Yes, PDF creator software and Nitro PDF can split files, but they have limitations compared to our free online tool. PDF Creator and Nitro PDF require software installation (consuming disk space), often need paid licenses for full features ($159+ for Nitro), and may have restrictions on batch processing. Our online PDF splitter offers comparable splitting capabilities completely free: split all pages, extract ranges, select specific pages, handle large files. The advantage: no installation, no cost, works on any device, completely private processing. While professional PDF software offers additional features like OCR or advanced editing, our tool excels at the core task - splitting PDFs quickly and efficiently.

The Technology Behind Our PDF Tools

Our PDF splitter and merger tools use pdf-lib, a powerful JavaScript library that enables complete PDF document manipulation directly in the browser. Unlike server-based solutions that upload your files, pdf-lib processes everything client-side using modern web technologies (WebAssembly and JavaScript), ensuring your documents never leave your device.

The library works by parsing the PDF structure, extracting page objects, and reconstructing new PDF documents with the selected pages. This approach maintains 100% document fidelity including text, images, fonts, annotations, and metadata.

How PDF Merging Works

When you merge PDF files online using our tool, here's the technical process:

1. File Loading: Each uploaded PDF is converted to an ArrayBuffer (binary data) that can be processed in JavaScript
2. PDF Parsing: The pdf-lib library parses each PDF's internal structure, identifying pages, fonts, images, and resources
3. Page Extraction: All pages from each source PDF are extracted as page objects while maintaining their original properties
4. Document Creation: A new empty PDF document is created to serve as the merged container
5. Page Copying: Pages from each source PDF are copied into the new document in the order you specified
6. Export: The final merged PDF is saved as a binary file and downloaded to your device

import { PDFDocument } from 'pdf-lib';

async function mergePDFs(files) {
  // Create a new PDF document
  const mergedPdf = await PDFDocument.create();
  
  // Process each file
  for (const file of files) {
    // Convert file to ArrayBuffer
    const arrayBuffer = await file.arrayBuffer();
    
    // Load the PDF
    const pdf = await PDFDocument.load(arrayBuffer);
    
    // Get all page indices [0, 1, 2, ...]
    const pageIndices = pdf.getPageIndices();
    
    // Copy pages from source to merged document
    const copiedPages = await mergedPdf.copyPages(
      pdf, 
      pageIndices
    );
    
    // Add each copied page to merged document
    copiedPages.forEach(page => {
      mergedPdf.addPage(page);
    });
  }
  
  // Save the merged PDF as bytes
  const mergedPdfBytes = await mergedPdf.save();
  
  // Create downloadable blob
  const blob = new Blob([mergedPdfBytes], { 
    type: 'application/pdf' 
  });
  
  return blob;
}

How PDF Splitting Works

The PDF splitting process is equally sophisticated but works in reverse:

1. Source Loading: The original PDF is loaded and parsed to identify all pages
2. Page Selection: Based on your choice (all pages, page range, or specific pages), the tool determines which pages to extract
3. New Document Creation: For each output file, a new empty PDF document is created
4. Page Copying: Selected pages are copied from the source PDF to the new document
5. Individual Export: Each new PDF is saved separately and downloaded

import { PDFDocument } from 'pdf-lib';

async function splitPDFAllPages(file) {
  // Load the source PDF
  const arrayBuffer = await file.arrayBuffer();
  const sourcePdf = await PDFDocument.load(arrayBuffer);
  
  // Get total page count
  const pageCount = sourcePdf.getPageCount();
  
  // Array to store split PDFs
  const splitPdfs = [];
  
  // Create a separate PDF for each page
  for (let i = 0; i < pageCount; i++) {
    // Create new PDF for this page
    const newPdf = await PDFDocument.create();
    
    // Copy single page from source
    const [copiedPage] = await newPdf.copyPages(
      sourcePdf, 
      [i]  // Page index
    );
    
    // Add page to new document
    newPdf.addPage(copiedPage);
    
    // Save as bytes
    const pdfBytes = await newPdf.save();
    
    // Create blob with filename
    splitPdfs.push({
      blob: new Blob([pdfBytes], { 
        type: 'application/pdf' 
      }),
      filename: `page-${i + 1}.pdf`
    });
  }
  
  return splitPdfs;
}

import { PDFDocument } from 'pdf-lib';

async function splitPDFByRange(file, startPage, endPage) {
  // Load source PDF
  const arrayBuffer = await file.arrayBuffer();
  const sourcePdf = await PDFDocument.load(arrayBuffer);
  
  // Validate page range
  const totalPages = sourcePdf.getPageCount();
  if (startPage < 1 || endPage > totalPages) {
    throw new Error(`Invalid range. PDF has ${totalPages} pages`);
  }
  
  // Create new PDF for extracted range
  const newPdf = await PDFDocument.create();
  
  // Create array of page indices (0-based)
  // If user wants pages 5-10, we need indices 4-9
  const pageIndices = Array.from(
    { length: endPage - startPage + 1 }, 
    (_, i) => startPage - 1 + i
  );
  
  // Copy pages in range
  const copiedPages = await newPdf.copyPages(
    sourcePdf, 
    pageIndices
  );
  
  // Add all copied pages
  copiedPages.forEach(page => {
    newPdf.addPage(page);
  });
  
  // Save extracted PDF
  const pdfBytes = await newPdf.save();
  
  return new Blob([pdfBytes], { 
    type: 'application/pdf' 
  });
}

Performance Optimization

Our implementation includes several optimizations to ensure fast processing even for large PDFs:

• Async Processing: All PDF operations use async/await to prevent browser freezing during processing
• Memory Management: We use URL.revokeObjectURL() to clean up memory after downloads, preventing memory leaks
• Progress Tracking: For large operations, we update progress indicators to keep users informed
• Batch Optimization: When splitting all pages, we process pages efficiently with small delays to prevent browser blocking
• File Validation: PDFs are validated before processing to catch corrupted files early

Browser Compatibility

Our PDF splitter and merger work in all modern browsers that support:

• JavaScript ES6+ (Promises, async/await, ArrayBuffer)
• File API (FileReader, Blob)
• WebAssembly (for pdf-lib's core operations)

Supported browsers: Chrome 60+, Firefox 60+, Safari 12+, Edge 79+, Opera 47+. The tools work on desktop and mobile browsers, though large file processing performs better on desktop with more available RAM.

Why Client-Side Processing Matters

Unlike traditional online PDF tools that upload files to servers, our client-side approach offers significant advantages:

Implementation Best Practices

If you're building your own PDF tools, consider these best practices we follow:

1. Error Handling: Wrap all PDF operations in try-catch blocks to gracefully handle corrupted files
2. User Feedback: Show progress indicators for operations taking more than 1 second
3. File Validation: Check file type and size before processing to prevent issues
4. Memory Cleanup: Always revoke object URLs after downloads to prevent memory leaks
5. Async Operations: Use async/await for all file operations to keep UI responsive
6. Batch Processing: For splitting many pages, add small delays between downloads to prevent browser blocking