Hawk PDF Merger

Merge PDF files online in seconds — no signup, no watermarks, no file size limits. Drop your PDFs, drag to reorder, and download a single combined document. Unlike SmallPDF or iLovePDF, your files never leave your device. Everything runs in your browser using pdf-lib, an open-source PDF library. Safe for contracts, invoices, reports, or any sensitive documents.

How do I merge PDF files online?

Drop or select your PDF files, drag to reorder if needed, and click Merge & Download. The combined PDF downloads instantly. No account or signup required.

Is it safe to merge PDFs online?

Yes. Unlike SmallPDF, iLovePDF, or Adobe Acrobat online, this tool never uploads your files to any server. The merge happens entirely in your browser using pdf-lib. Your documents never leave your device.

Is there a file size limit?

No hard limit. Since processing happens in your browser, it depends on your device's memory. Most devices handle PDFs up to 100MB+ without issues. For very large files, your browser may slow down briefly during merge.

Can I reorder pages before merging?

Yes. After adding your PDF files, drag and drop them to change the order. The final merged document follows the order shown in the file list.