How it works
Each PDF is read in a background thread in your browser. The tool counts its pages so you can check you added the right files, then copies every page, in order, into a new document. The pages keep their original size, orientation and content, so you can mix A4 and US Letter pages or portrait and landscape documents.
The merged PDF downloads automatically as merged.pdf. If you close the download dialog by mistake, use Download again.
What is kept and what is not
| Kept | Not kept |
|---|---|
| Text, images and vector graphics | Bookmarks (the outline in the sidebar) |
| Page size and rotation | Interactive form fields |
| Selectable, searchable text | Digital signatures (merging changes the document, so they would no longer be valid) |
| Links within a page | Document title and author of the original files |
Tips
- Scanned pages are just images inside the PDF, so they merge fine but stay as large as the originals.
- To put one file in the middle of another, you would need to split the second file first; merging adds whole files one after another.
- Check the total page count before merging: it is the sum of all files and should match what you expect in the result.