PDF merger

What it does

Bring your PDFs together. Choose the order, merge, and download.

How to use it

1. Add at least two PDFs, then use the arrows to put them in order. All pages are included. Files stay on your device.
2. Up to 20 files, 50 MB combined and 1,000 pages. Encrypted or damaged PDFs cannot be merged.
3. Form fields are flattened. Bookmarks, document-level attachments and digital signatures are not preserved. Keep your original files.

Example

Combine a two-page PDF and a three-page PDF to produce a five-page PDF in the selected order.

Methodology

pdf-lib copies pages in order and flattens form fields locally in the browser.

Limitations

2–20 files, 50 MB combined and 1,000 pages. Encrypted PDFs are unsupported; signatures and document-level bookmarks are not preserved.

Automation

This tool runs in your browser. No upload API or MCP endpoint is available.