Why can’t I upload images to my blog?
How do I choose default settings for allowing comments, text filters, etc.?
How do I edit the published date and time of a post?
Can I use MarsEdit for static publishing without a blog service?
Not all blogging systems support image uploading well. If yours doesn't support doesn't support image uploads well, consider starting a free blog with WordPress, where image uploads are well-supported.
At this time there is a shortcoming to the image upload support for Tumblr:
MarsEdit supports default settings for many options, so you don’t have to set them every time you create a new post. See Setting Default Options For New Posts.
Choose
MarsEdit relies on other software (such as WordPress, Micro.blog, Tumblr, etc.) to publish your blog. It does not generate or organize the HTML required for a blog, so it can’t be used to easily edit blogs directly on a site without blog-hosting software installed. We are considering the possibility of supporting a method for static publishing in the future.