Home / Free Tools / Merge PDF
Free Merge PDF Tool
Join two or more PDF files into one document. Put them in the order you want and download. Your files never leave your device.
When you need to merge PDFs
Documents often arrive in pieces: a cover letter, a form, a bank statement, an invoice and a few scans. Many offices and online portals accept only one file. Merging puts all the pieces into one PDF, in the order that you choose, so that the reader sees everything in one place.
This tool works inside your browser. Nothing is uploaded, so it is a safer choice for private papers.
How to merge PDF files
- Press "Choose PDF files" or drop your files into the box.
- Check the page count shown for each file.
- Use the Up and Down buttons to put the files in the right order. Remove files you do not need.
- Press "Merge PDFs".
- Press "Download merged PDF" and check the pages.
What this tool keeps and what it removes
- Kept: the text, pictures, fonts, page sizes and page rotation of every page, and web links (links to https addresses).
- Removed: bookmarks, form fields and links that jump to other pages, because those parts belong to the old file as a whole and would be wrong in a new one.
- Not supported: password-protected PDFs. Remove the password first, in the program that created the file.
Tips before you send the merged file
- Open the merged PDF and scroll through every page once.
- If the file is too big for email or a form, compress the pictures in the original files first.
- Name the file clearly, such as company-name-application.pdf.
- Keep your original files. The tool does not change them.
- If you need only some pages of a file, take them out first with our Split PDF tool, then merge.
Common problems and quick fixes
- The order is wrong: use the Up and Down buttons on each file and check the numbers before you merge.
- A file shows an error: it may be password protected or damaged. Open it in your PDF viewer, save a fresh copy, and add that copy.
- The merged file is very large: some scans are heavy. Make the scans smaller before you create the PDF, then merge again.
- A page looks sideways: rotate it in the original file first, because this tool keeps each page as it is.
- You need only some pages: take them out with the Split PDF tool and merge the result.
Businesses often merge an invoice, a quotation and a terms page into one file before sending it to a client. Doing this in the browser is quick and keeps customer papers on your own device. It is also a good habit to keep one clean copy of every merged file in a folder named by month, so you can find it again.
Private by design
All work is done on your own device. We never receive, store or read your PDF files. When you close the page, the files are gone from the tool.
Frequently asked questions
Is this merge PDF tool free?
Yes. It is free, needs no sign-up and adds no watermark.
Are my PDF files uploaded?
No. The merge happens in your browser on your own device. We never receive your files.
How many files can I merge?
There is no fixed number. The limit is the memory of your device, so we ask for a total of 150 MB or less.
Can I change the order?
Yes. Use the Up and Down buttons next to each file before you press Merge PDFs.
Why does my PDF show an error?
The most common reason is a password-protected PDF, which this tool cannot open. A damaged file can also fail. Try to open and save it again in your PDF viewer.
Will the merged file look the same?
Pages keep their text, pictures, fonts and sizes. Bookmarks, form fields and links to other pages are not carried over.
Does it work on a phone?
Yes, in a modern browser on Android or iPhone. Very large files can be slow on older phones.
How do I get a smaller merged file?
Compress the pictures in your original files before you merge. Our Image Compressor and Converter can help with images.
More free tools
Split PDF: take pages out of a PDF.
Image to PDF: turn pictures into a PDF.
Image Compressor and Converter: make photos smaller.