How do I merge multiple PDF files in custom order?

Select or drag your PDF documents into the workspace, arrange their order using the live thumbnail previews, and click merge to download one united file.

How many PDF files can I combine at once?

The free plan supports combining up to 10 files simultaneously with up to 5MB per document.

Does Pdfumi add any watermarks to the merged PDF?

No. The merged file is 100% clean with zero added watermarks, ready for professional and official use.

Merge PDF online free

Combine 2–10 PDFs into one file. Reorder pages, preview live, then download. Free daily quota applies.

Choose PDF filesor drag and drop PDFs herePDF only · up to 10 files · max 5MB each

Quick Guide

How to Use: Merge PDF online free

1. Upload Document

Select files from your device or drag and drop your document into the upload area above.

2. Process & Customize

Adjust options to your preference. The system processes and optimizes your document instantly.

3. Instant Download

Save your clean output file with zero watermarks, ready for any personal or official use.

256-bit SSL Security

End-to-end SSL/HTTPS encrypted processing. Your files are automatically deleted within 1 hour.

Zero Watermarks

Clean documents with no added watermarks. Preserves sharp typography and original layout.

Cross-Platform Access

Works smoothly on macOS, Windows, iOS, and Android without downloading any third-party app.

Frequently Asked Questions about Merging PDFs

How do I merge multiple PDF files in custom order?: Select or drag your PDF documents into the workspace, arrange their order using the live thumbnail previews, and click merge to download one united file.
How many PDF files can I combine at once?: The free plan supports combining up to 10 files simultaneously with up to 5MB per document.
Does Pdfumi add any watermarks to the merged PDF?: No. The merged file is 100% clean with zero added watermarks, ready for professional and official use.