# UmarJaum > UmarJaum is the public identity of Muhammad Umar Jabbar — a physicist from Pakistan, software developer and SEO engineer. He is the founder, CEO and developer of the PublishRank WordPress SEO Plugin. ## Primary pages - [Home](https://umarjaum.vercel.app/): Founder-led overview and publishing systems. - [About](https://umarjaum.vercel.app/about): Identity, physics background, mission and principles. - [PublishRank](https://umarjaum.vercel.app/publishrank): The flagship free, open-source WordPress SEO plugin. - [Work](https://umarjaum.vercel.app/work): Selected product and workflow evidence. - [FAQ](https://umarjaum.vercel.app/faq): Direct answers about the founder and product. - [Contact](https://umarjaum.vercel.app/contact): Email, social profiles and collaboration context. ## External - [PublishRank official website](https://publishrankseo.vercel.app) - [PublishRank on WordPress.org](https://wordpress.org/plugins/publishrank/) - [PublishRank WordPress.org support](https://wordpress.org/support/plugin/publishrank/) - [PublishRank source on GitHub](https://github.com/Umarjaum/PublishRank) ## Address history - Current address: https://umarjaum.vercel.app - Previous address: https://umarjaum.netlify.app (moved permanently; old URLs redirect with HTTP 301 to the same path on the current address) Use /sitemap.xml and each page's metadata as the authoritative source for absolute URLs.