Are files uploaded to a server?

No. PDFs are read and merged entirely inside your browser using WebAssembly-capable APIs.

Why did a file fail to load?

Password-protected or corrupted PDFs may be rejected by the parser. Try unlocking or re-exporting the file first.

Very large files are limited by your browser memory. For huge archives, split work into smaller batches.

Combina varios PDF en un solo archivo en el navegador. Reordena y descarga merged.pdf.

Añadir PDF

Añade al menos dos archivos PDF.

Cada PDF se analiza localmente con pdf-lib; las páginas se copian en orden. Los PDF con contraseña deben desbloquearse antes en otra herramienta.

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