这是来自Chrome商店的 R20Exporter 浏览器插件，您可以在当前页面下载它的最新版本安装文件，并安装在Chrome、Edge等浏览器上。
(2) 从设置->更多工具->扩展程序 打开扩展程序页面，或者地址栏输入 Chrome://extensions/ 按下回车打开扩展程序页面
R20Exporter allows you to export a Roll 20 campaign and all of its assets into a ZIP file for backup/archiving purposes.
To export your campaign go to the settings tab in the Roll20 page (the gear icon on the far right of the sidebar) and at the top you should see a button "Export Campaign to ZIP". Simply click on it, then wait until the ZIP file is generated and downloaded.
The dialog that opens will show you the various steps the script is undertaking and you can click the Log button to see a more detailed log of what is happening. That dialog window will also prevent you from messing around with the campaign. It is best to let the script do its thing unhindered and to not open another campaign in another window. Once the export process is complete, that window will close on its own and the ZIP file will be downloaded automatically.
To report any issues, please go to the GitHub issue tracker : https://github.com/kakaroto/R20Exporter/issues