PDF converter
Merge PDF
Combine two or more PDF files into one, in the order you add them. Free, with no sign-up.
Tested by Thiago · Updated
Free, no sign-up · Sent over HTTPS · Files are deleted from our server automatically after 30 minutes
How to merge PDF files
- Add your files: drag them into the box above, or click "Choose files".
- Add at least two PDFs in the order you want, then click "Merge PDFs".
- Download the merged PDF. Your files are removed from our server automatically after 30 minutes.
When to merge PDF files
Merging PDFs puts several documents together into a single file, which is much easier to send, upload or print. ConvertKiwi merges your files in the order you add them and keeps every page exactly as it was, with the original text, images and page sizes.
- A job, visa or school application asks for all documents in one PDF.
- You want to combine a contract with its annexes, or invoices for a month.
- You scanned a document in several parts and want a single file.
How big will the merged PDF be?
About the sum of the files you add. In our test, three PDFs of 1.4, 1.1 and 2.2 MB became one 4.6 MB file: pages are copied as they are, nothing is compressed and almost nothing is added.
So when the portal you are uploading to has a size limit, add up your files before merging. If the total is over the limit, merge first and then run the merged file through Compress PDF once, instead of compressing every document separately.
Before you send the merged file
- Rename it. The result is always called merged.pdf, and a name like "ana-souza-application.pdf" is much easier to find for whoever receives it.
- Open it and check the page count: it should match the total of all the files you added.
- Look for pages lying on their side. Merging keeps each page exactly as it was, so fix sideways scans with Rotate PDF, either before merging or on the merged file.
- Drop pages you do not need, such as blank backs of scanned sheets, with Split PDF by typing only the pages to keep.
Tips for the best result
- Add the PDFs in the order you want them to appear. The first file comes first.
- Password-protected PDFs cannot be merged. Remove the password in your PDF reader first.
- Pages are copied as they are. Bookmarks and interactive form fields from the originals may not carry over.
About these formats
PDF: The standard format for documents. It looks the same on every device, which makes it ideal for sharing, printing and sending scans.
Frequently asked questions
How many PDFs can I merge?
From 2 up to 20 files at a time, up to 200 MB each.
Will the merged PDF lose quality?
No. Pages are copied without being re-compressed, so text and images stay exactly the same.
How long is the merged file kept?
Uploaded files are deleted right after merging, and the merged PDF is removed after 30 minutes.
Can I change the order after adding the files?
Not by dragging. If the order is wrong, clear the list and add the files again in the right sequence. You can also merge first and then rearrange the pages with Split PDF, typing them in the order you want, for example 4-6, 1-3.
Can I merge PDFs on my phone?
Yes. Pick the files from your phone storage or a cloud app one after the other in the order they should appear, then download the merged PDF. It works in any current mobile browser.