openHASP/docs/06-faq.md

Q: HASP Settings

A:

Q: Is there a file browser built-in?

A: There is no native file browser included yet, as this currently is low on the priority list.

However, you can upload the edit.htm.gz (3kB) file to the SPIFFS partition from the ESP32 FSBrowser repository. Download it from: https://github.com/espressif/arduino-esp32/blob/master/libraries/WebServer/examples/FSBrowser/data/edit.htm.gz

When the edit.htm.gz file is present on Spiffs you will see an additional File Browser button on the Main Webpage:

Using that webpage, you can right-click and delete files: