How to respond to a GET /favicon.ico request on the ESP8266 in AT Command mode?

ESP8266 operating in AT Command mode connected to the uP via the UART port and configured as a WEB Server,

If requested:
.
please refer to my simple html page.

On the other hand, how to respond to a request:
.
assuming I have defined an icon in ico or png format.

I have solved the situation for now by adding the following to the page header
.
where xxx...xxx is the icon definition encoded in base64.

In this case, the request to upload the icon (for the main page) does not come, but if I switch in the browser to one of the subpages it receives the request again.

Theoretically I could add definitions in each subpage header but I have limited space in the uP and would prefer to just answer the GET correctly.

Greetings
JarekC

PS.
This is my first start with HTML and ESP8266

Take advantage of the ESP8266 file system ( SPIFFS ) and put your icon there and 'serve' it on demand exactly the same way you serve 'pages'.

Try something like this
.
Of course, instead of "...binary icon content..." you insert the content of the icon, and set "Content-Length" to exactly its length (instead of the example 9999). After "keep-alive" there is a free line.

Thank you for your help.

One more question.
The parameters I get from the forms on the site come encoded in 'url decoding':
.

Is it possible to change this so that they come in standard form, without url encoding.

Greetings
JarekC