Merge PDF Files

Combine multiple PDF files into a single document. Drag to reorder. 100% free — files never leave your browser.

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Drop PDF files here or click to upload

Select multiple PDF files

Examples

Combine invoices: merge multiple invoice PDFs into one file for easier sharing.
Append an appendix: place the main document first, then add supporting pages at the end.
Reorder pages: use the ↑/↓ buttons to set the final order before merging.

FAQ

Are my PDFs uploaded?
No. Merging is done in your browser using `pdf-lib` and files are not uploaded to our servers.

Will page sizes change?
No. Each page keeps its original size (A4, Letter, etc.). The merged output contains pages as-is.

What about password-protected PDFs?
If a PDF requires a password, it may fail to load/merge. Remove the password in a PDF viewer first, then merge.

Tips for clean merges

Rename files clearly before merging so the final order is easy to review.
If a PDF is scanned (image-only), merge works—but searching text may not.
For best results, ensure all PDFs are readable and not corrupted before merging.