Show HN: GitHub-style Markdown note app to test README content (readmenote.com)

Hello hackers,

I built Readmenote, an online web app for creating notes using GitHub style, great for previewing how content will appear in a README file.

No login required. Free. Data is saved in your browser.

Built using react-markdown, NextJS, etc.

Take a look at https://www.readmenote.com/ . If you have some feedback, please let me know. Thank you so much.