Merge PDF Files
Combine multiple PDF files into one. Drag to reorder. Free, fast, and secure.
Drop PDF files here
or click to browse — select multiple PDF files
Files to Merge
Frequently Asked Questions
How many PDF files can I merge?
You can merge as many PDF files as your browser memory allows — typically 50+ files without issues. There's no artificial limit. Simply drag and drop all your files, reorder them as needed, then click merge.
Does merging reduce PDF quality?
No. Merging combines PDF pages without recompressing or modifying the content. All text, images, fonts, and formatting are preserved exactly as they appear in the original files.
Can I reorder pages before merging?
Yes, after adding files you can drag them up or down to set the order. Pages from each file will appear in the merged PDF in the sequence you arrange them.
Is there a file size limit?
Individual files can be up to 100MB each. The total merged file size depends on your browser memory. For most use cases with typical document sizes, there are no practical limitations.
Are my PDFs uploaded to any server?
No. All merging happens locally in your browser using pdf-lib.js. Your documents never leave your device, making it safe for confidential contracts, financial documents, and private files.