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.
Getting the order right first time
Files merge in the order shown in the list, and pages within each file keep their original sequence. Two habits save re-doing it:
- Name files numerically before selecting them —
01-cover.pdf,02-resume.pdf,03-references.pdf. Use a leading zero, or 10 will sort before 2. - Check the list before merging, not the output afterwards. The ↑↓ buttons reorder without re-selecting anything.
What a combined document should look like
| Use case | Sensible order |
|---|---|
| Job application | Cover letter → CV → certificates → references |
| Invoice package | Invoice → timesheet → receipts → contract |
| Visa or immigration file | Follow the checklist order exactly — reviewers work through it in sequence |
| Scanned contract | Page 1 upward; check no page was scanned twice or upside-down |
| Report submission | Title page → summary → body → appendices |
For anything being reviewed by a person — an application, a tender, a claim — a single well-ordered PDF measurably improves how the submission is received. Reviewers dislike opening seven attachments, and some portals only accept one file.
Why local processing matters here
The documents people most often need to merge are exactly the ones that shouldn't be uploaded to a stranger's server: contracts, bank statements, medical records, passport scans, tax filings. Most free online mergers upload your files, process them remotely, and rely on a promise to delete them afterwards. This tool copies pages between documents entirely inside your browser using the open-source pdf-lib library — you can verify it by loading the page, disconnecting from the internet, and merging anyway.