Merge PDF files
Combine several PDFs into a single document, in the order you set. The files are processed in memory, then forgotten — nothing is kept on our servers.
2 to 50 PDFs, merged in the order of the list — 12 MB in total.
How it works
1.Choose your PDFs
2 to 50 files, in one or several goes. Each is recognised as a PDF from its bytes, not its name.
2.Set the order
The numbered list is the order of the final document. Move a file up, down or out before you start.
3.Download
A single PDF comes back, with its SHA-256 fingerprint. Nothing is kept on our side.
What to know before you start
- 2 to 50 PDFs per merge, 10 MB per file and 12 MB in total.
- The order is never alphabetical: the service does not read file names.
- Only the pages are carried over: bookmarks and document properties (title, author) do not follow.
- Pages are copied, not redrawn: selectable text stays selectable.
- A protected PDF is refused, with its reason — and that refusal is not counted.
The same operation, through the API
The browser and your backend call the same endpoint, and get the same response.
curl -X POST https://api.convertchester.com/v1/merge \
-F "file=@part-1.pdf" -F "file=@part-2.pdf"Other PDF tools
Is merging PDFs free?
Yes, in the browser and without an account. A refusal is never counted.
Are my files kept?
No. The files are processed in memory then forgotten. Logs carry only their SHA-256 fingerprint and their size — never their name or their content.
In what order are the PDFs merged?
In the order of the list, which you set before starting. Through the API, it is the order of the file parts in the request. Never the order of the file names: the service does not read them.