I haven’t tried it for myself, but some of the other export options should include your photos as well. Three ways that explicitly mention uploads/photos are:
- Blog Archive Format (which is a ZIP file with all your posts and file uploads).
- Under the Design section, there’s a setting to enable GitHub archiving. This automatically copies posts as HTML, JSON, and uploaded photos to a GitHub repository about once a week.
- In Micro.blog 2.1 for macOS, File → Export has 2 options that will run locally on your Mac:
- Markdown (download all your posts as Markdown with front matter, including photos).