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

No fixed limit — merging runs in your browser using your device's own memory, so the practical ceiling is your device's RAM, not a quota Documateo imposes.

Will the page order in each original file be preserved?

Yes. Each source PDF keeps its internal page order; you're only choosing the order the files themselves are stitched together in.

Does merging reduce PDF quality?

No — pages are copied at their original resolution and encoding. Merge doesn't recompress or rasterize anything.

Can I merge a password-protected PDF?

Not directly — unlock it first with the Unlock PDF tool (which needs the correct password), then merge the unlocked file.

PDF Tool

Merge PDF

Combine PDFs in the order you choose. Runs entirely in your browser — files never upload.

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Drag a PDF here, or click to browse

Multiple files supported · Max 100.0 MB

How it works

1
Drag in two or more PDF files, or click to browse.
2
Drag the file thumbnails to set the order you want them combined in.
3
Click Merge — the combined PDF is built entirely in your browser.
4
Download the merged file. Nothing was ever uploaded to a server.

Merge PDF — frequently asked questions

Is there a limit to how many PDFs I can merge?: No fixed limit — merging runs in your browser using your device's own memory, so the practical ceiling is your device's RAM, not a quota Documateo imposes.
Will the page order in each original file be preserved?: Yes. Each source PDF keeps its internal page order; you're only choosing the order the files themselves are stitched together in.
Does merging reduce PDF quality?: No — pages are copied at their original resolution and encoding. Merge doesn't recompress or rasterize anything.
Can I merge a password-protected PDF?: Not directly — unlock it first with the Unlock PDF tool (which needs the correct password), then merge the unlocked file.