Need to combine separate documents, scanned pages, or reports into one file? This page merges multiple PDF files into a single organized document right in your browser.
How to merge PDF files
- Upload two or more PDF files (up to 32 files).
- Press Convert file.
- Download your merged PDF document.
What you get
A single combined .pdf file containing all pages from your uploaded documents in sequence.
When this helps
- Putting together multiple reports or invoices into a single package
- Combining separate chapters or scanned pages into one book or document
- Sending one attachment instead of multiple individual files
Related PDF tools
After merging, you may want to compress the result, reorder pages, or prepare it for the web:
- Compress PDF files — remove redundant objects and shrink streams
- Organize and reorder PDF pages — keep, reorder, or drop pages
- Make a PDF open faster — linearize for fast web view
- Make a scanned PDF searchable — add an invisible OCR text layer
Browse all PDF tools.
Operation details
What happens: pdfcpu concatenates each uploaded PDF in upload order into one output file. Pages are copied structurally — not rasterized.
Engine: pdfcpu 0.15.0 merge.
Inputs: 2–32 PDF files, each up to 80 MB.
Output: One combined .pdf containing every page from every input, in sequence.
Lossy? No — page content and fonts are preserved as-is.
Common failures: Encrypted inputs, mismatched page sizes (still merges, but layout may vary per source), or fewer than two files uploaded.
Use when: You have separate chapters, scans, or invoices that should ship as a single attachment.