Combine and Merge PDF Files Online - The Best Free PDF Merger Online


Do you have multiple PDF files you wish to merge? Merging PDf files saves storage space and increases the ease of file management. However, merging PDF files isn't an automatically easy task unless you outsource the task to third-party software or a merger tool. A free online PDF merger can combine multiple PDF files and save you time and money for premium upgrades.

Check out this software review of the best PDF merger tools available online for free.

free online pdf merger


Part 1: What to Look for in a Free Online PDF Merger

When looking for a free PDF merger online, several factors must be considered to ensure you find a reliable and secure tool. These include:

  • Security and Privacy: Ensure the website uses secure connections (HTTPS) to protect your data during merging. Check the privacy policy to ensure they don't retain your uploaded files after the merger.
  • User Interface (UI) and Ease of Use: Look for a tool with an intuitive and user-friendly interface. The process should be straightforward and not require any technical expertise.
  • Number of Files: Verify the tool allows you to merge multiple PDFs into a single document in one go. Some tools limit the number of files you can merge for free.
  • No Registration Required: While many online PDF mergers may ask for your email or require registration, try to find a tool that allows you to merge PDFs without creating an account. This minimizes the risk of spam and unwanted emails.

Also see:

How to Save a Word Document as a PDF on Windows & Mac Systems

Effortless PDF Conversion: How to Save Google Docs as PDF on iPhone

Part 2: 6 Free Online PDF Merger Tools

Once you know what to look for in a free online PDF merger, it's time to compare the available options. This section lists and discusses the different PDF joiner free tools available online.

Free PDF Merger 1: Adobe Acrobat

use the adobe pdf merger for free

Adobe Acrobat is a popular PDF editor and manager with a wide range of functions, such as merging PDF files. The free online PDF merger can help you combine multiple PDF files via your web browser without losing file quality.

Features of Adobe Acrobat Free Online PDF Merger

  • Merge PDF files via any web browser.
  • Rearrange and organize your files and individual pages.
  • Support batch PDF file merging.
  • Merge PDF files securely.

Pros of Adobe Acrobat Free Online PDF Merger

  • Cost-free.
  • Web-based, meaning you don't need any downloads or installations.
  • A clean user interface and is easy to navigate and use.
  • A secure connection to process files.
  • Support multiple formats.

Cons of Adobe Acrobat Free Online PDF Merger

  • Despite having a free trial package, Adobe will require you to upgrade your package to unlock more PDF merging features.


Adobe has two pricing plans besides the free plan:

1. Adobe Pro. This plan has two options;

  • Monthly - $29.99
  • Annual - $19.99 monthly ($239.88 charged annually).

2. Adobe PDF Pack. This plan has two options.

  • Monthly - $14.99
  • Annual, prepaid - $119.88.

Free PDF Merger 2: iLovePDF

the pdf joiner online

iLovePDF is a complete and free online tool that offers many of the resources you need when dealing with PDF files. It provides multiple PDF functions, including converting, splitting, compressing, and merging.

Features of iLovePDF

  • Combine multiple files without losing quality.
  • Merge files securely.
  • Enjoy the straightforward user interface and seamless user experience.
  • Rearrange the PDF files in the order you prefer before merging.

Pros of iLovePDF

  • A simple layout.
  • Easy to navigate and use.
  • Free to use.
  • Web-based, removing the need for any downloads or installations.

Cons of iLovePDF

  • iLovePDF locks some key features in premium plans which may not fit your budget needs.


  • It has a free plan with limited functionalities and features. Besides the free plan, it has two premium plans: Premium and Business.
  • The Premium plan costs $7 monthly and $4 monthly if billed annually ($48). You may have to contact the sales team for custom pricing for the Business plan.

Free PDF Merger 3: Smallpdf

smallpdf the pdf merger free

Smallpdf is another free online PDF merger that promises to combine multiple files without losing file quality. The PDF merger free online tool boasts secure file processing since it deletes all uploaded files from the server within an hour after processing.

Features of Smallpdf

  • Combine multiple PDF files fast.
  • Support all operating systems since it's web-based.
  • Support batch file processing.
  • Rearrange PDF files in the order you want.
  • Merge your files securely.
  • Preview PDF files before merging.

Pros of Smallpdf

  • Secure and private file processing.
  • Intuitive and user-friendly interface.
  • Fast file combining.
  • No registration is required when merging online.
  • You can use Smallpdf PDF the merger online for free.

Cons of Smallpdf

  • While Smallpdf allows you to merge files online for free, you may be limited in features, prompting the need for an account upgrade.


Smallpdf has different pricing plans, including free and business which requires you to contact the sales team for custom pricing. The other two plans include Pro and Team.

1. Pro. The monthly plan is $12, while the annual plan is $9 monthly, charged at $108.

2. Team. The monthly plan is $10, while the annual plan is $7 monthly, charged at $84.

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Free PDF Merger 4: Soda PDF

the online pdf merger free

Soda PDF is another PDF merger free online tool that doesn't compromise when it comes to file quality. It allows you to combine multiple PDF files fast and for free.

Features of Soda PDF

  • Adjust the order of your PDFs.
  • Enjoy the simple UI and seamless file processing experience.
  • Support batch PDF file merging.
  • Merge PDF files safely and securely.
  • Merge PDF files without registrations or downloads.

Pros of Soda PDF

  • The merging process is straightforward, with no technical expertise required.
  • Web-based and compatible with most operating systems and devices.
  • A user-friendly interface.
  • Safe and secure file processing.

Cons of Soda PDF

  • Despite being a reliable free online PDF merger, Soda PDF places size and daily usage limitations on the free trial.


  • Soda PDF has a free trial. It also has two premium plans; a 14-day full access costing $2 and a $52 annual plan.

Free PDF Merger 5: Combine PDF

combine pdf

Combine PDF is an alternative online PDF merger free tool that delivers on its promises of fast and free multiple PDF file combining. Like other free online PDF merger tools, you don't have to download software or third-party programs with Combine PDF, especially since the tool is dedicated 100% to merging files.

Features of Combine PDF

  • Merge multiple PDFs fast without losing quality.
  • Support multiple file formats.
  • Merge PDF and image files into a single file.
  • Combine up to 20 PDF files.
  • Merge files safely and securely.

Pros of Combine PDF

  • Clean user interface and easy to navigate.
  • 100% free.
  • Combine PDF is web-based, meaning you don't have to download any software.
  • Added feature of merging image files and PDFs.

Cons of Combine PDF

  • Unfortunately, like most free online PDF mergers, Combine PDF won't merge your PDF files without an active internet connection since it's web-based.


  • Combine PDF is 100% free to use online.

Free PDF Merger 6: Xodo

free pdf merger online of xodo

Xodo by Aprise is yet another PDF merger online free tool that can combine multiple PDFs into a single document. Besides merging PDF files, Xodo can help convert, view, and edit files. Despite being a reliable PDF merger online tool, Xodo tends to be limited in usage.

Features of Xodo

  • Merge multiple PDF files fast without losing quality.
  • Enjoy a fast and seamless merging experience.
  • Support batch file merging.
  • Merge files safely, privately, and securely.

Pros of Xodo

  • High-quality output.
  • Free, albeit limited.
  • Quick and easy PDF file merging.
  • Web-based, meaning it's also cross-platform.

Cons of Xodo

  • Xodo limits you to only one file processing daily unless you upgrade to the premium package.


It has three pricing plans:

1. Free Trial, allowing you full access for seven days.

2. Xodo Pro (1 user). This plan charges $12 monthly and $108 annually ($9 per month).

3. Xodo Pro (2+ users). This plan requires custom pricing. Contact sales to get custom pricing.

Read more:

How to Save a Google Doc as a PDF? [Computer & Mobile Device]

Converting Magic: How to Send a Pages Document as a PDF Like a Pro

Part 3: An Alternative PDF File Merger Offline - Coolmuster PDF Merger

Are you skeptical about using online PDF mergers? While they are free and web-based, free online PDF merger tools expose you to data breach risks.

The alternative is downloading a dedicated PDF file merger on your desktop for a safe, fast, and efficient merging experience. Coolmuster PDF Merger is a professional tool you can use to combine multiple large PDF files for free.

Features of Coolmuster PDF Merger

  • Merge multiple PDFs effortlessly for free.
  • Support batch PDF file merging.
  • Preserve the PDF files' quality and integrity after merging.
  • Preview files and edit before merging.

Here is how to use Coolmuster PDF Merger to merge PDF files for free.

01Download, install, and launch the program on your computer. Click Add Files to upload the PDF files.

merge pdfs with coolmuster merger

02Tick the boxes next to the PDF files to select the ones you want to merge. Click the three-dotted menu under Output Folder to set the destination folder.

03Click the Start button to merge your files.

merging pdf files

The Bottom Line

The benefits of a free online PDF merger are endless. For starters, you don't have to download any software or upgrade to access PDF file merging features unless necessary.

However, they come with their own challenges. It is impossible to merge your PDF files with a free online PDF merger without an active internet connection.

The alternative is a dedicated professional tool like Coolmuster PDF viewer to merge your files offline, fast, free, and efficiently. Download Coolmuster PDF Merger to combine multiple large PDF files for free without losing file quality.

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