Phoenix Tools

PDF

Processed locally in your browser

Merge PDF

Merge two or more PDF files into a single consolidated document without uploading sensitive contracts or reports to third-party cloud servers.

How to Use Merge PDF

1

Click 'Select PDF Files' or drop multiple PDFs into the upload zone.

2

Reorder documents by dragging or using the position controls.

3

Click 'Merge PDFs' to assemble the combined document.

4

Download your merged PDF immediately with zero waiting time.

What This Tool Does

Reads the binary structures of your selected PDF documents using WebAssembly/pdf-lib, concatenates pages, preserves fonts and vector graphics, and compiles an updated cross-reference table directly in browser memory.

Common Use Cases

Assembling multiple scanned document pages, receipts, and invoices into a monthly tax report.
Combining resume, cover letter, and recommendation letters into a single job application.
Consolidating project chapters and agreements into a single client deliverable.
Privacy & Local-First Processing

Unlike cloud PDF converters, Phoenix Tools processes PDF binaries locally in your web browser. No copy of your document is ever sent to or stored on any server.

Frequently Asked Questions

Is there a limit on the number of PDFs I can merge?

There are no artificial limits. Processing depends only on your device's available memory.

Are bookmarks and links preserved during merging?

Standard page contents, vector drawings, text layers, and embedded fonts are fully preserved in the merged file.