Combine PDFs into one file
Scanned receipts, a signed contract and its annexes, chapters exported separately — sooner or later you need them as one PDF. This tool joins any number of PDF files into a single document, page for page, in exactly the order you set.
Everything happens inside your browser using the open-source pdf-lib engine. Your documents are read from your device and the merged file is written back to it, so contracts, bank statements and ID scans never pass through a server. There is no file-count limit, no watermark and nothing to install.
How to merge PDF files
- 1
Add your PDFs
Click Choose PDF files or drag them onto the page. You can add more at any time with Add more.
- 2
Put them in order
Drag a file up or down, or use the arrow buttons. The file at the top becomes the first pages of the merged PDF.
- 3
Merge
Press Merge PDFs. Pages are copied across exactly as they are — text stays selectable and images keep their quality.
- 4
Download
Save the combined file. The originals on your device are left untouched.
Key features
Unlimited files
Merge two files or two hundred; the only limit is your device's memory.
Custom order
Reorder by dragging or with the up/down arrows before you merge.
No quality loss
Pages are copied, not re-rendered, so text, vector graphics and images stay exactly as they were.
Works with restricted PDFs
Files that only block printing or copying are merged automatically. Password-protected files are flagged so you can unlock them first.
Private by design
Nothing is uploaded — the whole merge runs on your phone or computer.
Common uses
- Job applications: Send your CV, cover letter and certificates as one tidy attachment.
- Contracts and annexes: Keep the main agreement and its schedules together in the right order.
- Expense claims: Join a month of receipt scans into a single file for your finance team.
- Study notes: Combine lecture slides exported chapter by chapter into one revision file.
Tips and good to know
- To merge only part of a document, first use Extract PDF Pages to pull out the pages you need, then merge the result.
- Bookmarks (the outline panel) from the original files aren't carried into the merged PDF; the pages themselves are copied exactly.
- If a file is password-protected, remove the password with Unlock PDF and add it again.
- Merged file too big to email? Run it through Compress PDF afterwards.