This editor is used to display and check your HTML and CSS code easily. Just click on the this Extension Icon on the toolbar and it will open the Editor in the New tab. This will save the time of the Front end Developers.
If you think this add-on violates Mozilla's add-on policies or has security or privacy issues, please report these issues to Mozilla using this form.
Please don't use this form to report bugs or request add-on features; this report will be sent to Mozilla and not to the add-on developer.