Merge PDF
Merge two or more PDF files in the selected order without uploading them to a server.
Merge two or more selected PDF files locally in your browser, preserving the file-selection order and copying every page into one downloadable PDF.
How to merge PDF files
- Choose at least two PDF files in the order you want them combined.
- Review the displayed file order and start the merge.
- Download the generated PDF when processing finishes.
How merging works
The tool loads each PDF with pdf-lib, copies all source pages in order, and appends them to a new PDF document.
It does not edit page content, optimize file size, apply OCR, or repair every malformed or encrypted PDF.
Privacy and limitations
Selected PDF files are read and merged in your browser and are not uploaded by this tool. Large or complex PDFs can require substantial memory and may fail if the browser cannot load them.
Merge PDF FAQ
How many PDFs do I need?
At least two.
Which order is used?
The current file-selection order shown by the tool.
Are all pages included?
Yes, all pages from each successfully loaded source are copied.
Can it merge encrypted PDFs?
Not guaranteed; pdf-lib must be able to load the source.
Are PDFs uploaded?
No. Processing is browser-local.