Combine two or more PDF files into a single document. 100% private: your PDFs are merged inside your browser and never uploaded to any server. Free, no watermark, no signup.
Most online PDF mergers upload your documents to their servers, which is slow and risky for private files like contracts, bank statements, ID scans, and invoices. This PDF combiner works differently: it uses a JavaScript PDF engine (pdf-lib) running inside your own browser.
When you click Merge, the tool reads each PDF from your device memory, copies every page into a brand-new document in the exact order you set, and hands the combined file back as a download. No bytes of your documents ever travel over the internet — you can verify this in your browser's Network tab, or even switch off your Wi-Fi after the page loads.
Common uses: combining scanned pages into one document, joining invoices or receipts for accounting, merging chapters into a single report, or assembling application documents (CV + certificates + cover letter) into one PDF for email.
Yes, completely. Unlike most PDF sites, your files are never uploaded — the merging happens entirely inside your browser using JavaScript. You can even disconnect from the internet after the page loads and it still works.
There is no fixed limit. You can merge two, ten, or more PDFs. The only practical limit is your device's memory for very large files.
Yes. After adding files, use the up and down arrows to arrange them in any order. The merged PDF follows the order shown in the list.
No. Pages are copied into the new document exactly as they are — text, images and formatting are preserved with zero quality loss.
No watermark, no signup, no daily limits. The tool is completely free.