Is there a limit on how many PDFs I can merge?

No fixed limit. Because the work happens in your browser, the practical ceiling is your own memory — merging dozens of ordinary documents is comfortable on any modern machine.

Do my files get uploaded anywhere?

No. The merge runs in your browser using WebAssembly. Your PDFs never leave your machine, which is why this works on confidential documents that a server-based tool would be inappropriate for.

Can I reorder pages before merging?

Yes. Once your PDFs are loaded you can drag pages into any order, rotate them, or delete the ones you do not want, then download the combined file.

Merge PDF Files

Combine several PDFs into one document, reorder the pages, and download the result. Runs entirely in your browser — nothing is uploaded to a server.

Runs entirely in your browser — your file is never uploaded.

Questions

Is there a limit on how many PDFs I can merge?: No fixed limit. Because the work happens in your browser, the practical ceiling is your own memory — merging dozens of ordinary documents is comfortable on any modern machine.
Do my files get uploaded anywhere?: No. The merge runs in your browser using WebAssembly. Your PDFs never leave your machine, which is why this works on confidential documents that a server-based tool would be inappropriate for.
Can I reorder pages before merging?: Yes. Once your PDFs are loaded you can drag pages into any order, rotate them, or delete the ones you do not want, then download the combined file.

Split a PDFPDFs
Delete Pages From a PDFPDFs
Rotate PDF PagesPDFs

Or open the full PDF tool.

Questions

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