Merge PDF files
Combine multiple PDF files into one document in seconds. Drag to reorder, then download. Free, no sign-up, and your files never leave your browser.
- Files never leave your device
- Free, no sign-up
- No watermark
About Merge PDF
Combine two or more PDF files into a single document in the order you choose. Merging happens entirely inside your browser using your own device, so contracts, invoices, statements and scans stay private: nothing is uploaded, stored or seen by anyone else. There is no account, no watermark and no limit on how often you use it.
How to use Merge PDF
- 1
Drop your PDF files onto the box above, or click it to pick them from your device. You can add more files at any time.
- 2
Drag the files into the order you want them to appear in the final document. Remove any file you added by mistake.
- 3
Click Merge. Your browser joins the pages in that order and builds a new PDF.
- 4
Download the merged PDF. The original files on your device are left untouched.
Why use this tool
- Private by design: files are read and merged locally, so sensitive documents never travel over the internet.
- Keeps every page exactly as it was, including text, images, links and page sizes, because pages are copied rather than re-rendered.
- Mix documents of different page sizes and orientations in a single file.
- Works on Windows, macOS, Linux, Android and iOS in any modern browser, with nothing to install.
- Free with no sign-up, no watermark and no daily limit.
Frequently asked questions
Yes. The merge runs in your browser with JavaScript on your own device. Your files are never uploaded to CodeMites or any other server, so they stay as private as they are on your computer.
There is no fixed limit. The practical limit is your device's memory: most phones and laptops handle dozens of ordinary documents comfortably. For very large scans, merge in a few rounds.
No. Pages are copied into the new document as they are, without being converted to images, so text stays selectable and images keep their original resolution.
Encrypted files have to be unlocked first. Use our Unlock PDF tool with the password you already have, then merge the unlocked copy.
Yes. Open the merged file in Organize PDF to reorder or delete individual pages, or use Split PDF to pull out a range of pages.
Related tools
All PDF tools →- Split PDFSplit a PDF into single pages, custom page ranges, every N pages or files under a size limit.
- Organize PDFRearrange PDF pages by dragging thumbnails and remove the pages you do not need.
- Compress PDFReduce PDF file size by re-encoding page images at the quality you choose, or strip metadata losslessly.
- Rotate PDFRotate all pages or only selected pages of a PDF by 90, 180 or 270 degrees and save it permanently.
- Delete PDF PagesRemove unwanted pages from a PDF by selecting them on a visual preview, then download the cleaned file.
- PDF to JPGConvert every page of a PDF into a high-quality JPG image at up to 288 DPI.