Post Letters - What file formats are supported?
Paper Size
We support A4, but will auto resize for countries like the US.
File Size
10 MB max. If you need larger files to be supported, please let us know.
File Formats
Via the Dashboard
- docx
- doc
- rtf
If you need any more file types, please let us know.
Via the API
If you need to convert a file to a PDF, it can be first passed to our uploads endpoint: /uploads?convert=post View Docs
This will return a URL to the converted pdf file that can be used in the /post/letters/send endpoint View Docs