Are my PDFs uploaded?

No. Pages are copied with a client-side PDF library in this tab. Close the tab to drop the bytes.

Why did merge fail on a locked file?

Password-protected PDFs cannot be copied until they are decrypted. Use Unlock PDF with the password you already know, then merge the unlocked copies.

Files merge in list order (top to bottom). Use the arrows to reorder whole files, not individual pages.

Up to 10 files, 25 MB each. Very large page counts can exhaust tab memory; split the job if the tab freezes.

Utill.net

Fusionner des PDF

dans le navigateur

Assemblez plusieurs PDF, réordonnez, téléchargez. Les fichiers restent sur l’appareil.

Cette conversion s’exécute uniquement dans votre navigateur — rien n’est téléversé.

Glissez des PDF ou parcourez ci-dessous

Parcourir les fichiers

Fichiers—
Original—
Résultat—

Qu'est-ce que cet outil ?

A browser PDF merger. You add PDFs, reorder the file list, and download a single document whose pages are concatenated in that order. Processing stays on the device.

It does not edit text, add watermarks, or split pages. It does not crack encryption.

Cas d'usage courants

Combine signed scans and a cover letter into one attachment
Join chapter exports from a printer driver
Stack receipts before an expense upload that allows only one PDF

Comment utiliser

Drop two or more PDFs (or use Sample for two tiny demo files).
Reorder with the up/down buttons; remove files you do not want.
Download PDF. The browser builds the merged file locally.

Exemples

Input	Notes
`a.pdf` then `b.pdf`	All pages of A, then all pages of B.
Reorder B above A	Output starts with B’s pages.
Encrypted `secret.pdf`	Merge fails until you unlock it with the known password.
11th file	Rejected — max 10 PDFs per run.

Pièges courants

Forms and some annotations may flatten or drop depending on how they were saved; check the output.
Bookmarks and some metadata from source files are not a guaranteed merge of every dictionary.
Unique gotcha: merge copies pages, not “print as booklet” imposition. Duplex layout stays whatever each file already was.

Références

Dernière révision: 2026-08-30

Questions fréquentes

Are my PDFs uploaded?: No. Pages are copied with a client-side PDF library in this tab. Close the tab to drop the bytes.
Why did merge fail on a locked file?: Password-protected PDFs cannot be copied until they are decrypted. Use Unlock PDF with the password you already know, then merge the unlocked copies.
Page order?: Files merge in list order (top to bottom). Use the arrows to reorder whole files, not individual pages.
Limits?: Up to 10 files, 25 MB each. Very large page counts can exhaust tab memory; split the job if the tab freezes.