Today I come up with a simple trick to use web browser as a simple text editor like Notepad.
Works on all web browsers
1. Copy below code in browser Url Section .
data:text/html, <html contenteditable>
2. Now Press Enter.
3. Now you can type anything as would do on any other text editor like Notepad.
4. To save your text file Press Ctrl + S and save it as anything.txt (.txt is important)