Combine PDF Files
Join two or more PDF files into one document. Drag them into order and download a single file. Free, and nothing is uploaded.
Drop PDF files here
or click to browse — you can select multiple files at once
Your merged PDF is ready
100% Private
Files are merged locally in your browser — nothing is uploaded to a server.
Fast
No waiting on uploads. Merging happens instantly on your device.
Free & Unlimited
No account, no watermark, no file limits.
How to merge PDF files
Three quick steps. Nothing to install and nothing leaves your device.
Add your PDFs
Drag two or more PDF files onto the box above, or click it to browse. Use Add more files to include extra PDFs later.
Set the order
Drag the files up or down in the list. The numbers update, and the files are merged in the order shown.
Merge & download
Press Merge PDFs, check the page count and size, then download your single combined document.
Combine PDFs into one file
Combine and merge mean the same thing here: the pages of your files are put one after another in a single PDF.
- Add the files: drop two or more PDFs on the box, or click to browse. You can select several at once.
- Set the order: the file numbered 1 comes first. Drag a file up or down to move it.
- One file out: the result downloads as merged.pdf, and the message shows how many files were combined and the final size.
- Private: the files are combined on your device and never uploaded.
More merge PDF options
Why merge PDF files?
Documents often come in pieces: a cover letter and a CV, several scanned pages, invoices for one month, or a form and its attachments. Many websites and offices want a single PDF, and one file is easier to email, print and store than five.
This tool joins your PDFs on your own device, so contracts, ID copies and financial papers are not uploaded to a server.
How this tool merges your files
- You set the order. Drag files in the list to change their place. The merged PDF follows the numbers, from 1 downwards.
- Pages are copied as they are. When your PDFs are in good shape, the original pages go straight into the new file. Text stays selectable and nothing is made blurrier.
- Compatibility mode is a safety net. If a file has damaged internal data and cannot be merged normally, the tool redraws its pages as images and rebuilds the document. It tells you when it used this mode. The result is complete, but its text can no longer be selected and the file can be larger.
- You get one file. The result shows how many files were combined and the final size, and downloads as merged.pdf.
Things to know
- You need at least two PDFs. The Merge button stays off until there are two or more in the list.
- Other file types are skipped. If you add something that is not a PDF, you get a message and it is left out.
- Encrypted PDFs can cause trouble. Many password-protected files will not merge correctly. Remove the password in your PDF viewer first.
- Very large jobs use memory. There is no limit on our side, but very large or very many files may be slow or fail on some devices, especially phones.
Tips for better results
- Check the order before you press Merge. It is quicker than fixing it afterwards.
- Turn other files into PDFs first. Use Word to PDF, JPG to PDF or TXT to PDF, then merge the results.
- Need only some pages from each file? Cut them out with Split PDF before you merge.
- Need to rearrange or delete pages inside the merged file? Edit PDF can move and delete pages and add text.
- File too large for an upload form? Run the result through Compress PDF, or try Compress PDF to 200KB or 500KB for common limits.
Need a clean file?
Read how to merge PDF files without a watermark.
Frequently asked questions
Quick answers about merging PDFs with ConvertKit Lite.
Are my PDFs uploaded to a server?
No. Merging runs in your browser, so your files are not uploaded anywhere.
How do I change the order of the files?
Drag any file in the list up or down. The numbers update, and the PDFs are merged in that order.
How many files can I merge?
There is no limit on our side. Very large or very many files may be slow or run out of memory on some devices.
What is compatibility mode?
If a PDF has damaged internal data and can't be merged normally, the tool redraws its pages and rebuilds the document instead. The result still merges, but pages become images, so text may no longer be selectable and the file can be larger.
Does it work with password-protected PDFs?
Many encrypted PDFs will not merge correctly. Remove the password in your PDF viewer first, then try again.
What is the minimum number of files?
Two. The Merge PDFs button is turned off until you add at least two PDF files.
Does merging reduce the quality?
Not in the normal case. The original pages are copied into the new file, so text and images stay as they were. Only compatibility mode, used for damaged files, redraws pages as images.
How do I know if compatibility mode was used?
The result message says so, for example: 3 files combined into one PDF, compatibility mode used. In that case the text in the merged PDF may no longer be selectable.
Can I add more files after I start?
Yes. Press Add more files, or drop more PDFs onto the page. New files go to the end of the list, and you can drag them where you want.
Can I remove a file from the list?
Yes. Press the cross on the right of any file to take it out before merging.
Do pages of different sizes work?
Yes. Each page keeps its own size, so an A4 page and a landscape page can sit in the same merged file.
What is the merged file called?
It downloads as merged.pdf. You can rename it after saving.
Does it work on a phone?
Yes, in any modern browser on Android, iPhone, Windows and Mac. Big PDFs use a lot of memory, so a computer is safer for large merges.
Is there a watermark or an account?
No watermark, no sign-up and no limit on how many times you merge.
Is combining PDFs the same as merging them?
Yes. Both mean putting the pages of several PDF files, one after another, into a single PDF.
How do I combine PDF files into one?
Add two or more PDFs, drag them into the order you want, press Merge PDFs and download merged.pdf.