R20Exporter is a free Chrome add-on developed by KaKaRoTo that allows users to export their Roll20 campaigns and all associated assets into a ZIP file. This feature is particularly useful for backing up and archiving campaigns.

To export a campaign, simply go to the settings tab on the Roll20 page and click on the "Export Campaign to ZIP" button located at the top. It is important to ensure that the campaign tab is focused in Chrome, as the download speed of the ZIP file may be significantly slower if the JavaScript is running as a background process.

During the export process, a dialog window will display the steps being undertaken by the script. For more detailed information, users can click on the Log button. It is recommended to avoid opening another campaign in a separate window to prevent any interference with the export process. Once the export is complete, the dialog window will close automatically and the ZIP file will be downloaded.