What this tool does
This tool combines several PDF files into a single PDF. You add the files, arrange them in the order you want with the up/down buttons, and the merged document is built in your browser.
Pages are copied without re-encoding, so text stays selectable and images keep their quality. Nothing is uploaded anywhere.
How to use it
- Choose two or more PDF files (each up to 15 MB).
- Arrange them in the desired order with the up/down arrows; remove any file you don't want.
- Press “Merge PDFs”.
- Download the merged PDF.
Supported formats
- Input: PDF files (up to 15 MB each)
- Output: a single PDF
Limitations
- Password-protected (encrypted) PDFs cannot be merged — remove the password first.
- Very many large files may be slow on low-memory devices; the merged size is roughly the sum of the inputs.
- Forms, annotations and bookmarks may not carry over perfectly — page content does.
Frequently asked questions
Does merging reduce quality?
No. Pages are copied byte-for-byte from the original files; there is no re-encoding or recompression.
Is there a watermark or file limit?
No watermark, no account, no limit beyond the 15 MB per-file size limit. Each file is processed on your own device.
Can I merge a password-protected PDF?
Not directly — the tool cannot open encrypted files. Remove the password (usually via the 'print to PDF' or the original app), then merge.