How do I merge PDF files online?

Upload two or more PDF files, drag them into the order you want, and click Merge to download one combined document.

Can I combine PDFs without installing software?

Yes. Scanonix merges PDFs in your browser, so no desktop app is required.

Are my PDFs uploaded to a server when merging?

No. Merge PDF runs locally in your browser, so your documents stay on your device during processing.

What should I do if the merged PDF is too large?

Use Compress PDF after merging to reduce the final file size for email or upload limits.

Can I merge only some pages from each PDF?

Merge combines whole PDF files. Use Split PDF first if you need to extract specific pages before combining.

Merge PDF Files Online

Combine multiple PDF files into one document. Upload PDFs, drag to reorder, and download — processed locally in your browser.

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Merge PDF Files Online

Use Scanonix to merge PDF files online and build one combined document from several uploads. Set file order before download so chapters, invoices, or appendices appear in the right sequence.

How to use Merge PDF Files Online

Click or drag PDF files into the upload area.
Drag files to set the order you want in the merged document.
Click Merge and download your combined PDF instantly.

Why use Scanonix Merge PDF Files Online

Combine reports, invoices, or chapters without desktop software.
Merge runs in your browser — files are not uploaded to Scanonix servers.
Reorder files before merging so the final PDF reads in the right sequence.
Compress the merged PDF afterward if the combined file is too large to email.

Common use cases

Join separate contract sections into one signed PDF packet.
Combine scanned receipts or statements for expense reporting.
Merge course handouts or report chapters into a single reading file.
Build one submission PDF from multiple exported attachments.

Good to know

Input files must be PDF documents.
Very large files or long merge jobs may be limited by browser memory.
Password-protected PDFs must be unlocked before merging.
Merge combines whole files in the order you choose — use Split PDF first if you only need selected pages.

Key features

Combine multiple PDFs in one session
Drag-and-drop file ordering
Local browser processing
Instant download

Frequently asked questions

How do I merge PDF files online?: Upload two or more PDF files, drag them into the order you want, and click Merge to download one combined document.
Can I combine PDFs without installing software?: Yes. Scanonix merges PDFs in your browser, so no desktop app is required.
Are my PDFs uploaded to a server when merging?: No. Merge PDF runs locally in your browser, so your documents stay on your device during processing.
What should I do if the merged PDF is too large?: Use Compress PDF after merging to reduce the final file size for email or upload limits.
Can I merge only some pages from each PDF?: Merge combines whole PDF files. Use Split PDF first if you need to extract specific pages before combining.

Related tools

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Preparing your workspace.

Frequently asked questions

How do I merge PDF files online?: Upload two or more PDF files, drag them into the order you want, and click Merge to download one combined document.
Can I combine PDFs without installing software?: Yes. Scanonix merges PDFs in your browser, so no desktop app is required.
Are my PDFs uploaded to a server when merging?: No. Merge PDF runs locally in your browser, so your documents stay on your device during processing.
What should I do if the merged PDF is too large?: Use Compress PDF after merging to reduce the final file size for email or upload limits.
Can I merge only some pages from each PDF?: Merge combines whole PDF files. Use Split PDF first if you need to extract specific pages before combining.