Many online tools fail or freeze when merging large PDFs — especially high-resolution scans or long documents with hundreds of pages. This tool is optimized for heavy merging, allowing you to combine large files reliably without crashing your browser.
Drag and drop files here, or click to select
Typically 20–200MB or documents with hundreds of pages.
Processing can take a bit longer, but the system is optimized to handle big PDFs smoothly.
No. Quality remains unchanged unless you manually compress afterward.
It’s possible, but desktop browsers handle heavy files much more reliably.