Free PDF Merger to Combine Multiple PDFs
Merge multiple PDFs into one file in the order you choose. Combine applications, scans, appendices, and review materials before upload.
Drop PDFs here or click to select
PDF (multiple selection)
0 files
Drag to reorder
Free PDF Merger to Combine Multiple PDFs Workflow
Upload PDFs
Select and upload multiple PDF files you want to merge.
Adjust Order
Drag and drop files to change the merge order.
Download
Download the merged PDF file.
Free PDF Merger to Combine Multiple PDFs Questions
Are my PDFs uploaded to a server?
No. All processing happens in your browser. Your PDF data is never sent externally, protecting your privacy.
How many PDFs can I merge?
It depends on the number of pages and file sizes (browser memory limits). If it feels heavy, merge in smaller batches or remove unnecessary pages first.
Can I change the merge order?
Yes. You can drag and drop files to reorder them. They will be merged from top to bottom.
Can I merge password-protected (encrypted) PDFs?
Encrypted PDFs may not be readable in the browser. Please use decrypted PDFs before merging.
Can I merge PDFs with different page sizes?
Yes. PDFs with different page sizes can be merged without issues. Each page will retain its original size.
Free PDF Merger to Combine Multiple PDFs References
- Adobe: PDF 32000-1
Core document for PDF file structure.
- Mozilla PDF.js
Reference implementation for browser-side rendering.
- MDN: File API
Base API behavior for client-side file handling.