Unisci file PDF

Combina più PDF in un unico documento. Trascina per riordinare, poi unisci.

100% Privato — I tuoi file non lasciano mai il tuo dispositivo. Tutta l'elaborazione avviene nel tuo browser.

Trascina i tuoi file PDF qui

o clicca per selezionare — solo file PDF

Come unire file PDF

Trascina i tuoi file PDF nello strumento, trascinali per impostare l'ordine desiderato e clicca su Unisci PDF. Il PDF combinato viene generato istantaneamente nel tuo browser con pdf-lib — nulla viene caricato su nessun server.

Tips for Merging PDF Files

  • Arrange files in the correct order — Drag and drop to reorder PDFs before merging.
  • Check file sizes before merging — The merged PDF equals roughly the sum of all input sizes. Compress first if needed.
  • Merge related documents together — Combine multi-part reports or separated sections into one cohesive file.
  • Use for assembling application packages — Merge resume, cover letter, and references into a single PDF.
  • Preview before downloading — Verify the page count matches expectations after merging.

When to Merge PDF Files

  • Combining scanned documents — Merge individually scanned pages into a single organized PDF.
  • Assembling reports — Combine separate report sections into one final deliverable document.
  • Job and university applications — Merge resume, cover letter, and transcripts into a single PDF.
  • Invoice and receipt management — Combine monthly invoices or receipts into a single PDF for accounting.
  • Legal document compilation — Merge legal documents and exhibits into a unified PDF for filings.

Domande frequenti

Questo strumento per unire PDF è davvero gratuito?
Sì, 100% gratuito senza limiti di numero o dimensione dei file. Siamo finanziati dalla pubblicità, non dalla raccolta dati.
È sicuro unire PDF online?
Assolutamente. I tuoi file PDF non lasciano mai il tuo dispositivo. Tutta l'unione avviene localmente nel tuo browser — nessuna elaborazione server.
C'è un limite al numero di PDF che posso unire?
Nessun limite rigido — dipende dalla memoria disponibile del tuo dispositivo. La maggior parte degli utenti può unire decine di PDF senza problemi.
Posso usarlo offline?
Sì — una volta caricata la pagina, puoi unire PDF senza connessione internet.
Can I change the order of PDF files before merging?
Yes — simply drag and drop the PDF files in the list to reorder them before clicking merge. You can also remove individual files from the list if you change your mind. The merged result follows the exact sequence shown.
Does merging affect PDF quality or formatting?
No — merging preserves the original content, layout, fonts, and images of each PDF exactly as they are. The tool combines the raw PDF data structures without re-rendering or re-compressing any content. What goes in comes out unchanged.
Why is my merged PDF so large?
The merged file size is approximately the sum of all input PDFs. If the result is too large for your needs (e.g., email attachment limits), use our PDF Compress tool on the merged file to reduce its size while maintaining readable quality.
Can I merge password-protected PDFs?
Password-protected or encrypted PDFs cannot be merged without first removing the protection. If you have the password, open the PDF in your regular PDF viewer, print to PDF (which creates an unprotected copy), then merge the unprotected version. ImgLab cannot bypass PDF security.

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