PDF Tools

PDF Merge Tool

Combine multiple PDF documents into one file entirely in your browser. Drag files, reorder pages, and download the merged result without sending anything to a server.

100% Local

All files stay in your browser. No backend upload, no cloud processing.

Drag & Drop

Quickly add multiple PDFs and reorder them before merging.

Responsive

Designed for desktop and mobile with easy file handling.

Merge PDFs

Add PDF files below, then click Merge to create a single document.

Drag & drop PDF files

or click the button above to select files from your device.

0 files 0 MB total

Why this tool is safe

PDF Merge Tool runs entirely in your browser with pdf-lib. Files are never uploaded, stored, or sent to any external server.

No backend or database.
Merging happens locally on your device.
Files are removed when you close the tab.

Privacy notice

All processing happens locally in your browser. No data leaves your device and no files are uploaded to any network service.

Frequently asked questions

Can I reorder files before merging?

Yes. Drag the file rows to rearrange the merge order before clicking Merge PDFs.

Are my PDFs uploaded to a server?

No. This tool uses browser-only processing, so your files remain local.

What PDF size limits apply?

Each PDF must be under 50MB and the total upload size should stay below 150MB for best browser performance.

What happens after merge?

You can download the merged PDF immediately. The input files remain local and the result is generated in memory.