Notaku has a free GitBook to Notion converter here.
Currently there is a bug with some page links missing
Supportet GitBook blocks
- Ordered and Unordered lists
- Hints (callouts)
- Code blocks
Here are some examples of blocks that are not supported.
If a block type is neither in this list and in the supported blocks list then it is not supported.
- Code in tabs
- Images and other complex blocks in tables