Merge PDF Files
Merge PDF combines two or more PDF files into a single document directly in your browser. Reorder files before merging, then download the combined PDF — nothing is uploaded to a server, so your files never leave your device.
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How to merge PDF files
- 1 Click the upload box and select two or more PDF files (or drag them in).
- 2 Reorder files using the up/down arrows if you need pages in a specific sequence.
- 3 Click "Merge PDFs" — your browser combines them instantly, with no upload.
- 4 Download the combined PDF, ready to share, print, or upload elsewhere.
Why merge PDFs instead of sending separate files?
Combining related documents — a cover letter and resume, an invoice and its receipts, multiple scanned pages, or chapters of a report — into a single PDF makes them easier to send, archive, and read in the right order. Recipients open one file instead of hunting through an email thread for attachments, and page numbering stays consistent across the whole document.
Common use cases
- Job applications: combine a cover letter, resume, and portfolio into one PDF.
- Invoicing and bookkeeping: merge an invoice with receipts or supporting documents.
- Scanned documents: combine individually scanned pages into one multi-page file.
- Reports and contracts: assemble sections drafted separately into a final document.
- Academic submissions: merge a paper with appendices or supplementary material.
Frequently Asked Questions
- Is my PDF uploaded to a server when I use this tool?
- No. Merge PDF runs entirely in your browser using JavaScript — your files are read and combined locally on your device and never transmitted anywhere. Closing or refreshing the tab discards everything.
- How many PDF files can I merge at once?
- There is no fixed limit — you can select as many PDF files as your browser and device memory can handle. Most users merge between 2 and 20 files at a time.
- Can I change the order of the files before merging?
- Yes. Use the up/down arrows next to each file in the list to reorder them before clicking Merge — pages will appear in the final PDF in that order.
- Will merging affect the quality of my PDF?
- No. Pages are copied directly from the source files without re-rendering or recompressing, so text, images, and formatting stay exactly as they were in the originals.
- Can I merge PDFs on my phone?
- Yes. The tool works in any modern mobile browser (Safari, Chrome) the same way it does on desktop, since all processing happens locally on your device rather than a server.
- Is there a file size limit?
- There's no limit imposed by the tool itself — the practical ceiling is your device's available memory. Very large files (hundreds of MB) may be slow on older or low-memory devices.
- Do I need to install any software?
- No. Merge PDF runs directly in your web browser with no extension, plugin, or desktop app required.