Organise PDF
Merge PDF
Merge multiple PDF files into a single document. Drag to reorder pages before combining. Free, instant, no account required.
Drop your PDFs here
Add 2 or more PDFs · Max 25 MB each on free tier
or press Ctrl U
How it works
Upload files
Drop two or more PDFs in the order you want to start from.
Arrange order
Move files up or down until the merge order looks right.
Download result
Merge the PDFs and download the combined file instantly.
Frequently asked questions
How many PDFs can I merge at once?›
Free users can merge up to 5 PDFs at once (25 MB each). Premium users can merge up to 20 PDFs at once (100 MB each).
Does merging reduce PDF quality?›
No. BrainyPDF merges PDFs without re-encoding the content, so image quality and text sharpness are fully preserved.
Can I reorder pages before merging?›
Yes. After uploading, drag the file cards to set the order before clicking Merge.
Can I reorder PDFs before merging?›
Yes. Use the up and down controls to arrange the files before clicking Merge PDFs.
Is there a limit to how many PDFs I can merge?›
Free users can merge multiple PDFs as long as they stay within the file size limits. Premium users get higher limits.
Does merging change the content of my PDFs?›
No. Merge PDF combines the files in the chosen order without re-rendering pages, so the original page content is preserved.
Can I merge PDFs on mobile?›
Yes. The merge tool works on modern mobile browsers, tablets, and desktop devices.