PDF Merger
Combine contracts, scans and reports into a single PDF. Files are processed on your device — nothing is uploaded, so it's safe for confidential documents.
How this works (and why it's private)
Most "free PDF merger" sites upload your documents to their servers — a real problem for contracts, medical records or financial statements. This tool instead runs the open-source pdf-lib library inside your browser: pages are copied from your source files into a new PDF entirely on your device. Disconnect from the internet after the page loads and it still works.
Common uses
- Job applications: resume + cover letter + certificates as one attachment.
- Invoicing: invoice + timesheet + receipts for a client's records.
- Scans: phone-scanned pages arrive as separate PDFs — merge them into one document.
- Legal & applications: forms, IDs and supporting documents in the required order.
Ordering
Files merge in the order shown in the list — use the ↑↓ buttons to rearrange before merging. Pages within each file keep their original order.
Frequently asked questions
Is there a size or page limit?
No artificial limits. Practical limit is your device's memory — hundreds of pages merge fine on any modern phone or laptop.
Will quality be reduced or a watermark added?
Neither. Pages are copied losslessly — text stays selectable, images keep full resolution, and the output is exactly your content, nothing else.
Can it merge password-protected PDFs?
Encrypted PDFs can't be read without the password. Remove the protection first (open it with the password and re-save/print to PDF), then merge.
Why does merging need an internet connection the first time?
Only to load the pdf-lib library itself from a CDN. Your documents never travel anywhere — the merging is 100% local.