How to merge PDF files
- Add your PDFs. Drag them onto the box above, tap Choose files, or paste them. You can add as many as you need.
- Put them in order. Use the arrows next to each file. The first file in the list becomes the first pages of the new PDF.
- Click Merge PDF. Your combined document is ready in a second or two. Download it with one click.
Why merging here is private
Most online PDF tools upload your files to their servers. PDF Free does the work inside your browser using the open-source pdf-lib library. Contracts, bank statements, medical letters and ID scans never leave your device, and nothing is stored after you close the page.
When merging PDFs is useful
- Job and visa applications that ask for one file containing your CV, cover letter, diplomas and passport scan.
- Invoices and receipts for a month or a project, combined into a single file for your accountant.
- School and university work: a report, appendices and a signed cover sheet.
- Scanned documents saved one page at a time by a phone or office scanner.
Example: a visa application
An embassy portal accepts one PDF. You have application-form.pdf (3 pages), bank-statement.pdf (4 pages) and passport.pdf (1 page). Add all three, move the form to the top, and merge: you get one 8-page file in the right order.
Tips for a clean result
- Check the size limit. Many portals allow 2–10 MB. If the merged file is too large, run it through Compress PDF.
- Need only some pages? Use Split PDF first to extract them, then merge.
- Photos instead of PDFs? Turn them into a PDF with JPG to PDF, then merge.
- Name the file clearly after downloading, for example Surname-Visa-Application.pdf.
Frequently asked questions
Is there a limit on files or pages?
There is no fixed limit. Because merging happens on your device, very large files (hundreds of MB) depend on your computer's or phone's memory.
Will the quality change?
No. Pages are copied exactly as they are: text stays selectable, links and images keep their quality.
Can I merge password-protected PDFs?
Not directly. Open the file in your PDF reader with the password, save a copy without protection, then merge.
Does it work on iPhone and Android?
Yes. Choose files from your phone's Files app or downloads; the merged PDF is saved to your downloads.
Do you add a watermark?
No. There is no watermark, no sign-up and no limit.
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Last reviewed: 2026-11-08. Tools are provided as-is. Keep a copy of important originals. See our disclaimer.