Merge PDFs — Free, Private & Offline
Merge PDF free, online and 100% offline — combine multiple pdfs in any order. Private & secure: files never leave your device, no upload, no sign-up.
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What is Merge PDFs?
Merge PDF is a free, private and fully offline PDF merger that combines two or more PDF documents into a single file — locally, in your browser, without uploading anything. Drag-and-drop pages to reorder them, mix scans with digital documents, and download the combined PDF instantly. No file-size limits, no watermarks, no sign-up and no upload to any server — ideal for confidential contracts and statements.
How to use Merge PDFs
- Open Merge PDFs — it loads instantly and runs entirely in your browser.
- Drop your file in. Nothing is uploaded; the file stays on your device.
- Adjust the available options to match exactly what you need.
- Get your result — private, offline and free.
Use cases
- Combine bank statements into one report for the year.
- Merge a scanned signature page back into a contract.
- Bundle invoices, receipts and confirmations for expense reports.
- Stitch chapters of a long document together before printing.
Frequently asked questions
Does this merge PDFs without uploading them?
Yes. PDF merging runs entirely in your browser using WebAssembly. Your files never touch a server.
Is there a limit on how many PDFs I can merge?
No hard limit — you can combine as many files as your browser's available memory allows. Very large batches over 1 GB total may be slow.
Can I reorder pages before merging?
Yes — drag and drop pages or whole files to set the order before downloading the combined PDF.
Does this work offline?
Yes — once the page loads, merging works without an internet connection.
Is Merge PDFs free?
Yes — Merge PDFs is completely free with no paywall, trials or usage caps. Every TabTasker tool is free forever.
Does Merge PDFs work offline and keep my files private?
Yes. Merge PDFs runs 100% client-side in your browser using Web Workers and modern browser APIs. Your files are never uploaded and it keeps working offline once the page has loaded.
Is this merge PDF tool better than online tools that upload my files?
For privacy, yes. Most online merge PDF services upload your files to a server. TabTasker does everything locally, so nothing leaves your device — ideal for sensitive or confidential documents.
Do I need to create an account or install anything?
No. No account, no extension and no install — just open the page and start. It works on any modern browser, desktop or mobile.