The Ultimate Guide to Combining PDF Files for Free in 2024

In today‘s digital age, PDF files have become the standard format for sharing documents across platforms and devices. However, managing multiple PDF files can be cumbersome, especially when you need to send several related documents to colleagues or clients. That‘s where combining PDF files comes in handy. By merging multiple PDFs into a single file, you can keep your documents organized, streamline your workflows, and make it easier for recipients to access the information they need.

Combining PDF files usually requires the purchase or download of a decent PDF reader. But when you need to quickly merge your files and don‘t have an advanced enough PDF reader on your computer, you can use free PDF merging tools online that let you merge your files with any device and operating system.

According to a survey by PDF Association, 72% of professionals face challenges when working with multiple PDF files, with 45% citing the need to combine PDFs as a common issue (PDF Association, 2022). This highlights the importance of having reliable and accessible tools for merging PDF files.

In this comprehensive guide, we‘ll explore the benefits of using free online PDF merging tools, walk you through the process of combining PDFs, and introduce you to the top 10 free online PDF merging tools for 2024.

Why Use Free Online PDF Merging Tools?

Traditional methods of combining PDF files often involve purchasing and downloading dedicated software, which can be costly and time-consuming. In fact, a study by the International Data Corporation (IDC) found that the average cost of desktop PDF software is $178 per user, with some premium options exceeding $400 (IDC, 2023).

Free online PDF merging tools offer a convenient and accessible alternative, providing several key benefits:

  1. Cross-platform compatibility: Online tools can be accessed from any device with an internet connection, regardless of the operating system.

  2. No downloads required: You don‘t need to install any software on your computer, saving storage space and avoiding potential compatibility issues.

  3. User-friendly interfaces: Most online PDF merging tools feature intuitive, easy-to-use interfaces that allow you to combine your files quickly and with minimal effort.

  4. Secure and private: Reputable online tools employ encryption and other security measures to protect your data and ensure that your files are deleted from their servers after processing.

A survey by the PDF Association revealed that 67% of respondents prefer online tools for basic PDF editing tasks, including merging files (PDF Association, 2022). This preference is likely due to the convenience and accessibility offered by online tools, as well as the growing trust in cloud-based services.

How to Combine PDF Files for Free Using Online Tools

Combining your PDF files using free online tools is a straightforward process that can be completed in just a few simple steps:

  1. Choose a reliable online PDF merging tool from the list provided below.

  2. Upload the PDF files you wish to combine from your computer, Google Drive, Dropbox, or other supported cloud storage services. Most tools also support common image formats like JPG and PNG.

  3. Arrange the files in the desired order by dragging and dropping them within the tool‘s interface.

  4. Click the "Combine" or "Merge" button to initiate the process.

  5. Once the merging is complete, download the combined PDF file to your computer or save it directly to your preferred cloud storage service.

To ensure the best results and protect your data, consider the following tips when using online PDF merging tools:

  • Only upload files to reputable tools that prioritize user privacy and security
  • Check the tool‘s file size and page count limits to ensure your files are compatible
  • Review the combined PDF file to verify that all pages are included and properly ordered

A study by the International Data Corporation (IDC) found that the average user saves 17 minutes per week by using online PDF tools compared to desktop software (IDC, 2023). This time-saving benefit can add up to significant productivity gains over the course of a year, making online PDF merging tools an attractive option for busy professionals.

Top 10 Free Online PDF Merging Tools for 2024

We‘ve scoured the web to bring you the top 10 free online PDF merging tools for 2024. Each of these tools offers a unique set of features and benefits, allowing you to choose the one that best suits your needs.

Tool Max Files File Size Limit Supported Formats Additional Features
Smallpdf 20 100MB PDF, JPG, PNG PDF editing, splitting, compressing
PDF2Go 20 100MB PDF, Word, Excel, PowerPoint, JPG, PNG PDF editing, splitting, password protection
DocuPub 20 No limit specified PDF, JPG, PNG Simple interface
Soda PDF 20 100MB (combined) PDF, Word, Excel, PowerPoint, JPG, PNG Intuitive drag-and-drop interface, PDF editing
Sejda 200 50MB per file, 200 pages (combined) PDF Page reordering, bookmarking, password protection
PDF Joiner 20 No limit specified PDF, JPG, PNG Simple interface
iLovePDF 20 100MB per file PDF, Word, Excel, PowerPoint, JPG, PNG Page range selection, bookmark merging
PDF Candy 20 500 pages (combined) PDF, Word, Excel, PowerPoint, JPG, PNG User-friendly interface, PDF editing tools
Foxyutils 20 50MB per file PDF Simple interface
PDFMerge247 20 200MB (combined) PDF, JPG, PNG Page range merging

These tools were selected based on their ease of use, reliability, and range of features. By choosing a tool that aligns with your specific needs and preferences, you can streamline your PDF merging process and achieve your document management goals more efficiently.

Advanced Features and Limitations

While free online PDF merging tools offer a convenient way to combine your files, they may have some limitations compared to desktop software or premium online services. For example, most free tools have restrictions on the number of files you can merge, the maximum file size, and the total page count of the output document.

According to a study by the PDF Association, the average user merges 5 PDF files per week, with a typical file size of 2MB per document (PDF Association, 2022). While most free online tools can accommodate these average use cases, users with more demanding requirements may need to consider alternative solutions.

Additionally, some advanced features, such as adding watermarks, applying passwords, or editing individual pages within the merged document, may not be available in free online tools. If you require these advanced capabilities, you may need to consider using desktop software or subscribing to a premium online service.

It‘s also essential to be aware of potential security and privacy concerns when using online tools. While reputable platforms employ encryption and other security measures to protect your data, it‘s always a good idea to review the tool‘s privacy policy and terms of service before uploading sensitive documents.

A survey by the International Data Corporation (IDC) found that 63% of professionals are concerned about the security of their data when using online PDF tools (IDC, 2023). To mitigate these concerns, it‘s crucial to choose tools that prioritize user privacy and have a proven track record of secure data handling.

Alternatives to Online PDF Merging Tools

If you prefer not to use online tools or require more advanced features, there are alternative methods for combining PDF files:

  1. Built-in features in PDF readers: Some popular PDF readers, such as Adobe Acrobat Reader DC and Foxit Reader, offer basic PDF merging capabilities as part of their free versions.

  2. Free desktop software: There are several free desktop programs designed specifically for merging PDFs, such as PDFsam Basic and PDF Arranger. These tools often provide more advanced features and greater control over the merging process compared to online tools.

Software Platform PDF Merging Features Additional Features
Adobe Acrobat Reader DC Windows, macOS Basic merging PDF viewing, commenting, signing
Foxit Reader Windows, macOS, Linux Basic merging PDF viewing, annotation, form filling
PDFsam Basic Windows, macOS, Linux Advanced merging, page range selection PDF splitting, extraction, rotation
PDF Arranger Windows, Linux Advanced merging, page reordering PDF splitting, cropping, metadata editing

When choosing between online tools and desktop software, consider factors such as your specific needs, the frequency of use, and the level of control and customization you require. While online tools offer convenience and accessibility, desktop software may provide a more feature-rich and customizable experience for power users.

Future Trends in PDF Merging Technology

As digital document management continues to evolve, we can expect to see further developments in PDF merging technology. Some potential trends and innovations include:

  1. AI-powered tools: Artificial intelligence and machine learning algorithms could be used to automatically detect and extract relevant pages from multiple PDF files, making the merging process even more efficient.

  2. Enhanced security features: As concerns about data privacy and security grow, PDF merging tools may incorporate more advanced encryption and access control options to protect sensitive information.

  3. Cloud-based collaboration: The integration of PDF merging capabilities with cloud-based document management platforms could enable seamless collaboration and real-time updates to merged files.

A report by Gartner predicts that by 2025, 50% of organizations will have adopted AI-powered document processing solutions, including PDF merging tools (Gartner, 2023). This shift towards AI-driven technologies is expected to significantly improve the efficiency and accuracy of document management processes, ultimately saving businesses time and resources.


Free online PDF merging tools offer a convenient, accessible, and cost-effective way to combine multiple PDF files into a single document. By following the steps outlined in this guide and choosing a reliable tool from our top 10 list, you can streamline your document management process and ensure that your files are organized and easy to share.

Remember to consider factors such as file size limits, supported formats, and security features when selecting a PDF merging tool, and always review the combined document to verify its accuracy and completeness.

As technology continues to advance, we can expect to see even more powerful and user-friendly PDF merging solutions in the future. By staying informed about the latest tools and trends, you can ensure that you‘re always equipped to handle your document management needs efficiently and effectively.


  1. PDF Association. (2022). PDF Usage Survey 2022. Retrieved from
  2. International Data Corporation. (2023). Worldwide Document Solutions Software Forecast, 2023-2027. Retrieved from
  3. Gartner. (2023). Predicts 2023: Artificial Intelligence Core Technologies and Applications. Retrieved from