Merge PDF Files Online
Combine two or more PDF files into one document, in the order you choose. Files stay on your device.
PDF only, up to 50 MB each
About this PDF merger
Merging PDFs is handy when you need to send several documents as one file, such as an application form with its attachments, a set of invoices, or scanned pages saved separately. This tool joins your PDFs into a single file and lets you set the order before you merge.
How to merge PDF files
- Click the box or drag in two or more PDF files.
- Use the Up and Down buttons to put them in the right order.
- Remove any file you added by mistake.
- Press Merge PDFs.
- Your combined file downloads as merged.pdf.
Supported files and limits
- PDF files only, up to 50 MB each.
- Password-protected or encrypted PDFs cannot be merged. Remove the password first with the program that created the file.
- Bookmarks and form fields from the original files may not carry over to the merged file. The page content itself is kept.
- Very large merges use your device’s memory, so a phone may struggle with hundreds of pages.
Privacy
Merging runs in your browser using an open-source PDF library. Your files are not uploaded to our servers. The tool loads that library from a public content delivery network, so your browser makes a request to download the library code, but not your documents.
Frequently asked questions
Can I change the order of the files?
Yes. Use the Up and Down buttons next to each file before pressing Merge PDFs. The pages are joined in the order shown.
Is there a limit on how many files I can merge?
There is no fixed limit, but your browser needs enough memory to hold every file at once. Merging a few dozen normal documents works fine on most computers.
Why did my PDF fail to merge?
The usual reasons are a password, encryption, or a damaged file. If a file reports an error, try opening it in a PDF viewer and saving or printing it to a new PDF, then add that copy.
Will the merged PDF lose quality?
No. Pages are copied across without being re-rendered, so text stays sharp and images keep their original quality.