Can I use GH pages as my portfolio?

Won’t it be commercial use if I will use github pages as portfolio to apply? Or prohibited commercial purposes in terms mean e.g. e-commerce web-site?

Using it for your portfolio is perfectly fine and not a violation of the terms of service. You can find a summary of the prohibited use cases on the About GitHub Pages help article:

GitHub Pages is not intended for or allowed to be used as a free web hosting service to run your online business, e-commerce site, or any other website that is primarily directed at either facilitating commercial transactions or providing commercial software as a service (SaaS).

Additionally, GitHub Pages sites must refrain from:

  • Content or activity that is illegal or otherwise prohibited by our Terms of Service or Community Guidelines
  • Violent or threatening content or activity
  • Excessive automated bulk activity (for example, spamming)
  • Activity that compromises GitHub users or GitHub services
  • Get-rich-quick schemes
  • Sexually obscene content
  • Content that misrepresents your identity or site purpose

(Copied from on 2020-08-24 14:49 UTC)

Additional reference: Can I use GitHub pages to host HTML5 games that will be used in social networking service?