PDF tools
Merge PDF Files Online
Join separate documents into one PDF without uploading them.
Data is processed on your device · No data is uploaded to our servers
Up to 20 PDFs · 50 MB total maximum
Your files stay on this device. Processing and downloads happen in your browser.
Instructions
- Choose up to 20 PDF files (50 MB total).
- Arrange the files in the desired order.
- Merge and download the combined PDF.
Understanding your result
Merging a two-page file followed by a three-page file gives five pages in that file order. Arrange the file list before clicking Merge PDFs. The merged document needs a review of the join between files as well as its first and last pages.
What to do if you have a problem
If a file fails to open, check whether it is encrypted or malformed. If the order is wrong, rearrange the file list and merge again. Keep each original because document-level features may not carry over into the combined copy even when its pages look correct.
What to know before using the result
Files are processed in your browser. Password-protected or malformed PDFs are unsupported. Editing can invalidate digital signatures; forms, bookmarks and document-level features may not carry over when pages are copied. Keep your original file. Large documents may exceed your browser’s memory. This tool does not redact content or compress PDFs.
Files and text are held in this page while you work. Downloads are saved through your browser. Reloading or closing the tab clears the working page; a downloaded copy remains in your device's download location.
Summary
Use the combined PDF after confirming the file order and the transitions between documents.