The ChatGPT HTML previewer is a free Chrome add-on developed by ptrlaszlo. This add-on enhances the functionality of ChatGPT by adding an "Open in new tab" button to every ChatGPT HTML output. With just a single click, users can now preview ChatGPT generated HTML files without the need to save them every time.

The main feature of this add-on is the convenience it offers. By simply clicking the "Open in new tab" button, users can instantly review the content generated by ChatGPT in a separate tab. This saves time and effort, as there is no longer a need to save the HTML files and open them separately.

Overall, the ChatGPT HTML previewer is a useful tool for anyone working with ChatGPT generated HTML files. It streamlines the reviewing process and allows for quick and easy access to the generated content. This Chrome add-on is a must-have for those who frequently use ChatGPT and want a more efficient way to preview their HTML output.