Help & FAQ
How to Use
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1
Upload Files
Upload your PDF files and/or images (up to 120MB per file)
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2
Combine Files
Click 'Combine' to merge your files
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3
Download Result
Download your combined PDF instantly
Frequently Asked Questions
Is there a file size limit?
Yes, each file can be up to 120MB in size.
What file types can I combine?
You can combine PDF files and various image formats (JPEG, PNG, TIFF, etc.).
Is my data secure?
Yes, we take security seriously. Your files are deleted from our servers immediately after processing.
Do I need to create an account?
No, CombinePDF is completely free to use without any registration required.
What are the processing priority options?
Fast: Optimized for speed using qpdf - up to 5x faster processing
Balanced: Smart tool selection based on file characteristics
Small size: Maximum compression using Ghostscript for smallest output files
How many files can I combine at once?
You can upload up to 20 files at once, with each file being up to 120MB in size.
What happens to my files after processing?
All uploaded files and generated PDFs are automatically deleted from our servers after 1 hour for your privacy and security.
Still have questions?
Contact us at [email protected]