PDF Merger
Combine multiple PDF files into one. Drag to reorder — done in seconds.
Drop PDF files here
or click to browse — add as many as you need
No files added yet. Drop PDFs above to get started.
How it works
Add your PDFs
Drop files onto the upload area or click to browse. Add as many PDFs as you need.
Set the order
Drag rows to reorder, or use the up/down arrows. The merged PDF will follow this sequence.
Merge & download
Click Merge and your combined PDF downloads instantly — no upload, no waiting.
Typical reasons to merge PDFs
Combining a multi-part report
Combining a multi-part report or document is one of the most common reasons. When chapters were exported separately — or different departments sent their sections independently — merging them into a single file is the final step before distributing.
Bundling contracts with supporting docs
Bundling a contract with its supporting documents makes email attachments cleaner. Sending an invoice alongside a signed agreement, or a proposal with a terms document, is easier when it's one PDF rather than two or three separate files to open and track.
Consolidating statements for accounting
Consolidating bank statements or invoices for accounting is another frequent use. Monthly statements and individual invoices that arrive separately over time can be merged into one file per period, which is much easier to hand to an accountant or upload to a finance tool.
Frequently asked questions
Are my PDF files uploaded to a server?
No. All merging happens entirely in your browser using pdf-lib. Your files never leave your device and nothing is sent to any server.
How many PDFs can I merge at once?
There is no hard limit on the number of files. You can merge as many PDFs as your device's available memory allows.
Can I change the order of the PDFs before merging?
Yes. Drag and drop the files in the list to reorder them, or use the up/down arrows on each row. The final PDF will follow the order shown.
Does this work with password-protected PDFs?
Password-protected PDFs that require a password to open cannot be merged. Remove the password protection first, then upload the file.
What is the output file name?
The merged file is downloaded as merged.pdf. You can rename it after downloading.
Are all pages from each file preserved in the merged output?
Yes. Every page from every uploaded file is included in the order you have set. If the second PDF has 5 pages, those 5 pages appear in sequence immediately after all pages from the first file.
Does merging reduce the quality of images or text in the PDFs?
No. The merger combines files at the structural level without re-rendering or re-compressing any content. The quality of the merged output is identical to the original files.
Can I select specific pages from each PDF instead of the whole file?
The merger includes all pages from each uploaded file. If you only need certain pages, use the PDF Splitter first to extract the pages you want, then upload those extracted files here to combine.