React App Deployment to GitHub Pages: The Hidden Pitfall of Root-Relative Paths

The Confusion

James Proneir’s React app deployment to GitHub Pages resulted in a white screen. The issue was caused by a leading slash in the file paths, which told the browser to search from the root of the domain instead of the current folder.

Why This Matters

The technical reality of deploying React apps to GitHub Pages is that even small differences in file paths can break the entire deployment, resulting in a blank screen with no visible errors. This can be frustrating and time-consuming to debug, especially for developers who are used to working with local HTML projects where relative paths work as expected.

Key Insights

• Using a leading slash in file paths can cause the browser to search from the root of the domain instead of the current folder, leading to file not found errors (James Proneir, 2026)
• Relative paths are resolved relative to the current folder, whereas root-relative paths are resolved relative to the root of the domain (MDN Web Docs)
• GitHub Pages deployments require careful consideration of file paths to avoid broken links and blank screens (GitHub Pages Documentation)

Practical Applications

• Use case: Netflix uses relative paths in their React app deployments to ensure correct file resolution, avoiding the pitfalls of root-relative paths. Pitfall: Using absolute URLs in React app deployments can lead to broken links when the domain changes.
• Use case: Airbnb uses a custom resolver to handle file paths in their React app deployments, avoiding the issues caused by leading slashes. Pitfall: Failing to consider the differences between local and production environments can result in unexpected behavior and errors.

References:

• https://dev.to/james_proneir/why-my-react-app-showed-a-white-screen-after-deploying-to-github-pages-3c13