1. Open your browser.
2. Create a new bookmark in your browser by pasting following java script in url field:
“javascript:document.body.contentEditable=’true’;document.designMode=’on’;void0?
3. Save the Bookmark
4. Open your facebook account or any website you want to edit.
5. Now remain the Facebook open and open the recently added bookmark and start editing.
NOTE: This editing can be seen on your computer only unless and until you
will not share it via snapshot.