The word blog is a Bengali synonym for English Blog, which is a kind of online personal diary or person-centered magazine. The English word Blog is an acronym for Weblog. Anyone who posts on a blog is called a blogger.

Bloggers regularly add content to their websites and users can comment on them there. Also in recent times blogs are becoming a medium of freelance journalism. One or more bloggers update their blogs with recent events.

Most blogs report on a specific topic. The rest are personal online diaries. A blog is a collection of articles, pictures, other blogs, web pages, links to other websites on the subject. One of the aspects of a blog is to give readers the opportunity to comment.

Most blogs are basically text-based. But some blogs are based on art (art blog), photo (photo blog), video (video blogging), music (MP3 blog) and audio (podcasting). Microblogging is another type of blogging where the size of the post is relatively small. As of June 2017, Blog Search Engine Technorati has more than 22 million blog posts.