Merge PDF
Combine multiple PDF files into one. Drag to reorder, then download the merged result.
Drop PDF files here
Select multiple files to merge them
How PDF Merging Works
This tool uses the pdf-lib JavaScript library to merge PDFs entirely in your browser. Each PDF is loaded, its pages are copied in order, and the result is downloaded as a single merged PDF file.
Supported PDFs
Most standard PDFs are supported. Password-protected or encrypted PDFs cannot be merged — remove password protection first.