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// many PDFs → one PDF
Merge PDF files
Combine invoices, scans or chapters into one PDF. Add your files, put them in the right order, and download the result — nothing is uploaded.
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How merging works here
Every page of every file is copied, in the order shown in the list — use the arrows to reorder files before merging. The pages themselves are untouched: no recompression, no quality loss.
Are my PDFs uploaded anywhere?
No — the merge happens entirely in your browser with JavaScript. Your files never leave your device.
Why does a password-protected PDF fail?
Encrypted PDFs can't be read without their password. Remove the protection first (with the password you know), then merge.
Is there a size limit?
Only your device's memory. Merging typical documents — even hundreds of pages — is no problem; multi-gigabyte scans may be slow on older machines.