See “ The SparkFun DataLogger does not send Access-Control-Allow-Origin headers, so browsers block cross-origin file downloads. serve.py replaces python3 -m http.server by serving static files AND proxying requests with CORS headers added.”
In falkorichter/fork_Adafruit_CircuitPython_SSD1305#54 (comment)
If the logger would add the header, we would be able to read the logs from static html hosted sites as shown in the above pr.
“Access-Control-Allow-Origin: *” would be it
Documentation: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Access-Control-Allow-Origin