Off-line SEO refers to the optimisation of the pages away from your website.
Top visibility of your website/blog at any of the search engines is really valuable, using offline seo is the part of Search engine optimization.
Get backlinks with high-quality content. Submit articles to industry directories or resource sites. Build relationships with influencers and ask them to share your blog and link to your blog. Contribute content on other high-authority sites as a guest author with a link back to your site.