Is there a limit on how many PDFs I can merge?

There's no hard limit. Browser memory is the practical constraint — most users can merge dozens of files without issues.

Will merging affect the quality of my PDFs?

No. The original content, fonts, and images are preserved exactly as-is.

Can I reorder pages from different PDFs?

You can reorder the files before merging. For per-page reordering, use our Reorder PDF Pages tool.

Are my documents uploaded to a server?

For this merge tool, processing runs in your browser and we don't upload your PDFs to our servers for merging.

What's the maximum size for merging PDFs?

There's no fixed limit — it depends on your device's memory. Merging 10–20 typical PDFs (a few MB each) works well; very large files may take longer.

Unisci PDF

Combine multiple PDF files into a single document safely. Use the up/down arrows to reorder the file list before merging. For this tool, Fluranto merges PDFs in your browser with pdf-lib — we don't upload your PDF contents to our servers for this merge step.

Gratuito · Senza limiti · Nel browser

Come usare

1Upload two or more PDF files.
2Use the up/down arrows to reorder the files in your preferred sequence.
3Click "Merge X PDFs" to combine them into one document.
4Download the merged PDF.

Domande frequenti

Is there a limit on how many PDFs I can merge?: There's no hard limit. Browser memory is the practical constraint — most users can merge dozens of files without issues.
Will merging affect the quality of my PDFs?: No. The original content, fonts, and images are preserved exactly as-is.
Can I reorder pages from different PDFs?: You can reorder the files before merging. For per-page reordering, use our Reorder PDF Pages tool.
Are my documents uploaded to a server?: For this merge tool, processing runs in your browser and we don't upload your PDFs to our servers for merging.
What's the maximum size for merging PDFs?: There's no fixed limit — it depends on your device's memory. Merging 10–20 typical PDFs (a few MB each) works well; very large files may take longer.