PDF Merger
Merge multiple PDF files into one. Reorder pages then download.
How it works
Upload 2 or more PDF files, reorder them using the arrows, then click Merge & Download. Everything runs in your browser — no files are uploaded to any server.
Merge multiple PDF files into one document
PDF Merger is a free online tool to combine multiple PDF files into a single document. Upload your PDFs, drag to reorder them, and download the merged file instantly. No sign-up required, no file size limits, and everything runs in your browser — your files are never uploaded to any server.
Drag and drop page reordering
Upload your PDF documents and easily drag and drop the file thumbnails to change the order of the pages in the final merged file.
Secure and private merging
All PDF processing happens directly in your browser using WebAssembly. Your files are never uploaded to our servers.
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Frequently asked questions
Is there a limit to how many PDFs I can merge?
There is no strict limit, but merging very large numbers of files may depend on your browser memory. For most use cases, it works perfectly.
Are my uploaded PDF files secure?
Yes. The merging process runs entirely in your browser. No files are sent to any server.