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Merge PDF
Merge several PDFs into a single document, reorder them before combining, and download — all in your browser with nothing uploaded.
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Click or drop PDF files to merge
Processed locally in your browser — never uploaded.
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
Can I set the page order?＋
Yes — add multiple PDFs and arrange them in the order you want before merging into one file.
Is there a file size limit?＋
There's no hard limit, but very large files use more memory since everything is processed in your browser.
Are my PDFs uploaded?＋
No — merging is done locally with pdf-lib; your documents never leave your device.