There is no definite answer to this question, as it depends on the blog platform and the specific features that it offers. However, most blog platforms allow users to make changes to their posts after they have been published, albeit with some restrictions.
For example, on WordPress, posts can be edited only if they have not been shared publicly yet. On Blogger, where posts are automatically published to the web, changes cannot be made until the post has been approved by a moderator.
Overall, it is generally safe to make changes to blog posts after they have been published, as long as these changes do not affect the overall structure or content of the post. However, it is always advisable to check with your blog platform’s administrators before making any changes in case there are any restrictions in place.