README-GitHub-Pages-Usage-limits.md https://help.github.com/articles/what-is-github-pages/

Warning: GitHub Pages sites are publicly available on the internet, even if their repositories are private. If you have sensitive data in your Page repository, you may want to remove it before publishing. Usage limits

GitHub Pages sites are subject to the following usage limits:

• GitHub Pages source repositories have a recommended limit of 1GB .
• Published GitHub Pages sites may be no larger than 1 GB.
• GitHub Pages sites have a soft bandwidth limit of 100GB per month.
• GitHub Pages sites have a soft limit of 10 builds per hour.

If your site exceeds these usage quotas, we may not be able to serve your site, or you may receive a polite email from GitHub Support suggesting strategies for reducing your site’s impact on our servers, including moving to a different hosting service that might better fit your needs.

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

If you have questions about whether your use or intended use falls into these categories, please contact GitHub Support.

====

Вообщем:

• Сайт на GitHub Pages может быть не больше 1Гб.
• Общий трафик в месяц не больше 100Гб.
• soft limit of 10 builds per hour - это я не понял, только 10 запросов в час?