What is the difference between combining and merging PDFs?

Combining and merging PDFs mean the same thing — taking multiple PDF files and joining them into one document. FixTools handles both terms with the same tool.

Can I combine PDFs of different sizes and orientations?

Yes. FixTools preserves each page exactly as it appears in the original file. Portrait and landscape pages, different paper sizes, and varying fonts all merge correctly.

Will the bookmarks and links in my PDFs still work after combining?

Internal bookmarks and hyperlinks within each original file are generally preserved after combining. Cross-document links may need to be updated manually after merging.

Can I combine a password-protected PDF?

You will need to remove the password first using the FixTools Unlock PDF tool. Once unlocked, you can combine the file like any other PDF.

Is there a limit on how many files I can combine at once?

There is no hard limit. The practical limit depends on your browser and device memory. Most users can combine dozens of files in a single session without issues.

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Combine Multiple PDF Files Into One

Whether you have two files or twenty, FixTools makes it easy to combine PDF files into a single, organized document. Upload your files, put them in the right order, and combine them into one clean PDF ready to share or archive.

⚡ Use Tool Now How it works

Cost: Free forever
Sign-up: Not required
Processing: In your browser
Privacy: Files stay local

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Combine any number of PDFs

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Drag-and-drop reordering

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Clean output — no added pages

PDF Tool

PDF Merger

All processing happens in your browser — your files are never uploaded to any server.

🚀Open PDF Merger

100% Free · No account · Works on any device

How to use this tool

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Upload all the PDFs you want to combine, arrange them with drag-and-drop, and click Merge to produce a single unified document.

How It Works

Step-by-step guide to combine multiple pdf files into one:

1
Open the PDF Combiner
Navigate to fixtools.io/pdf/pdf-merger. The tool works as both a merger and combiner.
2
Upload all PDF files
Click Upload or drag your PDFs into the tool. Upload all files you want in the final document.
3
Set the order
Drag the file thumbnails to set the exact order pages will appear in the combined document.
4
Combine into one PDF
Click Merge PDF to combine all files. The result is a single PDF containing all pages in sequence.
5
Save the combined file
Download the combined PDF. It is ready to share, print, or archive.