Merge PDF

What this tool accepts

.PDF input · .PDF output

Local safeguards

2–20 PDF files · 100 MB each · 120 MB combined. 300 pages/file · 500 pages combined · 128 MB max result

Private and offline-capable

Processing happens in this browser. Files are not uploaded, and generated results remain in memory until downloaded or the tab is closed. After the first successful production load, the app shell and local processing engines can work offline.

Related tools

• Split PDF
• Remove Pages
• Extract Pages
• Organize PDF
• Scan to PDF
• Compress PDF

Free and open source

Inspect how Local File Studio processes your files, run your own copy, or help improve the tools. Application code is available under Apache License 2.0; bundled libraries and assets retain their own licenses.

View source on GitHub · Contribute · Apache 2.0 license · Third-party notices

Links open in a new tab. GitHub requires a connection; the license and notices are included in the offline app.