Files are merged in the exact order shown here. Use the dropdown to sort, or the arrows to rearrange manually.
Download Merged PDFAbout Merge PDF
The merge PDF tool combines any number of PDF files into a single PDF document in seconds. Just drag & drop your PDFs, check the page order, and click merge. Every input file shows its exact page count, and you can sort or rearrange files with simple arrow buttons so the final document has exactly the order you want.
Everything runs completely inside your browser with the pdf-lib engine. Your files are never uploaded, nothing is stored, and the merged PDF keeps every page at its original quality and page size. It is free, private and works on any device.
Features of Merge PDF
- Merge unlimited PDF files into one document
- Drag & drop or browse to add multiple PDFs at once
- Shows the page count and file size of every PDF
- Auto sort by name, number, date, or rearrange with up / down arrows
- Each page keeps its original size, orientation and quality
- Custom file name for the merged PDF
- Free, no signup, no watermark, 100% private
How to Merge PDF Files
- Click the upload area or drag & drop all the PDFs you want to combine.
- Check the file order shown in the list - use the dropdown or arrow buttons to change it.
- Optionally rename the output file.
- Click Merge PDFs and wait a few seconds.
- Click Download Merged PDF to save your combined document.
Merge PDF FAQ
Is the PDF merger free?
Yes, completely free. There is no signup, no login and no limit on how many files you can merge.
Are my PDFs uploaded to a server?
Never. All merging happens inside your browser, so your documents never leave your device.
In what order are files merged?
Files are merged exactly in the order shown in the list. You can sort automatically by name and number (1, 2 ... 10 sorts correctly), by date, or rearrange each file manually with the up and down arrow buttons.
Can I merge PDFs that have different page sizes?
Yes. Every page keeps its original page size and orientation, so documents with different dimensions merge perfectly into one file.
Does my merged PDF lose quality?
No. Pages are copied into the new document as-is, so all text, images and formatting stay at full original quality.
How many PDFs can I merge at once?
As many as you like. Use the browse button or drag & drop to add a whole folder of PDFs at once.
Can I merge password-protected PDFs?
Password-protected (encrypted) PDFs are not supported. Unlock the files first, then merge them.
Related PDF Tools
Looking for more ways to work with your PDFs? Try these free online tools:
- Password Protect PDF - add a password lock to any PDF so only people with the password can open it.
- Compress PDF - reduce PDF file size without converting pages to images, keeping text sharp.
- Image to PDF Converter - combine JPG, PNG, WebP and more images into a single PDF.