Combine multiple PDF files into one document. Drag to reorder pages, merge unlimited files — completely local, no server upload, no signup.
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This utility is a high-performance node optimized for modern browser environments. All data processing is executed client-side, ensuring zero knowledge transfer to external servers.
Upload your PDF files by dragging them into the tool or clicking to select. Drag them into your preferred order, then click 'Merge PDF'. Download the combined file instantly — no signup or software needed.
The limit depends on your browser's available memory. Most computers can easily merge 10-30 files at once. For very large batches, merge in groups of 10 and then merge the results together.
No. The tool combines PDFs at their original quality. No re-compression, no resolution loss — the output file is identical in quality to the original files.
No. All PDF merging happens locally in your browser using the PDF-lib JavaScript library. Your files never leave your device, making it safe for confidential documents.
Password-protected PDFs need to be unlocked first before merging. Remove the password using a PDF unlocker tool, then merge the unlocked files.
After uploading your files, drag the file cards into your desired order. The merged output will follow exactly the order you arrange them. You can also rearrange individual pages if needed.