How to Combine PDF Files
Combine PDF Files Now →"Combine PDF" and "merge PDF" mean the exact same thing — joining multiple PDF documents into a single file. If you've searched for how to combine PDF files, you're in the right place. AuraPDF's free PDF combiner lets you drag, drop, reorder, and join any number of PDF files into one document in seconds.
This is one of the most-performed PDF operations worldwide, with an estimated 300 million merge/combine operations performed online each month. Common scenarios include combining chapters of a report, joining invoice attachments, assembling application documents, or creating a single file from multiple scanned pages.
Step-by-Step: How to Combine PDF Files
Upload PDF files
Upload all the PDF files you want to combine. Drag and drop multiple files at once, or click to browse. No limit on the number of files.
Reorder documents
Drag the PDF thumbnails to arrange them in your desired order. The combined file will follow the sequence you set.
Combine and download
Click the combine button. AuraPDF joins all PDFs into a single document, preserving all pages, formatting, links, and bookmarks.
Pro Tips
- Upload all files at once rather than one at a time — it's faster and lets you see the full document order
- Check that all PDFs have the same page size for a consistent combined document. If not, they'll still merge but page sizes may vary
- After combining, consider compressing the result if the file is too large for email (25MB limit for most providers)
- For confidential document compilations, use AuraPDF's Protect PDF tool to add a password after combining
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