100tools

PDF Merger

Combine local PDF files in your chosen order.

PDF & DocumentsFreeLocal

Combine PDFs in the listed order. Use the arrows to reorder files. Up to 50 files / 100 MB total; encrypted PDFs are unsupported. Page content is preserved; signatures and document-level bookmarks are not retained.

Files stay on this device. Nothing is uploaded.

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Frequently Asked Questions

Do I need to log in or upload my data?

No. Processing runs in your browser; input and files are not sent to a backend. Loading the website and program assets requires a connection.

Which formats and rules are supported?

PDF page content is preserved. Encrypted files, signatures and document-level bookmarks are not supported.