I have created react application using create-react-app when I start "npm start" it is running using localhost:3000 in browser which is fine. But, when I click index.html from project folder it is showing blank page. Can you suggest me solutions on how to run react application using index.html file
2 Answers
Add "homepage": ".", to the top of your package.json file. Then build with yarn build or npm build. Go to build/ folder and double click on index.html.

EDIT:
Opening the app via index.html needs
"homepage": "."inpackage.jsonbecause without it Webpack tries to load the static files from the root the file system rather than build directory. Reference
2 Comments
Deep Kakkar
can you please share the details about "homepage": ".",
programandoconro
@DeepKakkar I added an explanation in the answer. Thank you for your comment.