Not yet tested in Firefox, only at IE.
• Go to site where you want to hack their webpage and fool somebody that you are a potential hacker.
• Don't be noticed to someone that you are going to put some code on the address bar of your browser.
• Copy this code:
Code
javascript:document.body.contentEditable='true';document.designMode='on';void 0
and paste it on the address bar.
• Don't forget to press enter so that the code will take effect afterwards.
• Then press escape on the keyboard so that the code will not be visible and the url of that site will see the proof that you are going to hack that webpage.
• You can now delete, modify, resize the textboxes, images, etc. Enjoy!
Note: This hackworx is only focus on webpage not on the entire website.
