How to make your own cowsay with an image file
How to make your own cowsay is indeed an option if out of the 40 default logos we don’t like anything. Or because you just want to put your own logo on the Termux start page.
Cowsay is a program that contains a collection of ascii text that forms an image.
To view the cowsay file, you can write the command:
cd /data/data/com.termux/files/usr/share/cows
So we just need to create a new file, then fill it with ascii text that forms a logo, image or text banner.
Here’s how to make a termux cowsay logo
1. Prepare the cowsay image file
Image files can be anything. It can be your photos, anime photos or photos of your favorite e-sports team logo.
The image extension must be jpg, otherwise PNG, so that later it can be converted to ascii.
2. Convert image files to acsii
You can use the ascii converter service on the following site (click on the blue text).
Please adjust the settings with the image below:

Information:
Image files: upload your image file
Image width: ascii width (75)
Text color: text color ascii (white)
Background: background color (black)
Inverter image: reverse ascii text (content/empty) (yes)
Extra contrast: brightness (no)
Then press the convert button and copy the results.

3. Create a new cowsay file
First open the termux application then go to the cowsay directory. Just type the command:
cd /data/data/com.termux/files/usr/share/cows
Please create a new cowsay file with the command nano namacowsay.cow then enter the code file cowsay.
Cowsay file code:
$the_cow = <<EOC; $thoughts $thoughts (Text ascii kalian paste disini) EOC
For example I will create a new cowsay with the name cowsayku.cow
nano cowsayku.cow
Next I enter the code for the cowsay file along with my ascii text.
$the_cow = <<EOC; $thoughts $thoughts``-:/+ooossyyyysoo+/-`..:+syhddddmmmmmmmmmmdy` ````.-/+syhddmmmmmmmmmmmmmd: ````.-/+shdddmmdhhddhhhdmmdo ``````.:+hmmddhs/::+sssshds-/o+:.-dmddo-+ydmmNmmmdy ``-:/+++-.:ymmmhdysoooyddds ````.--.``.-dNmmso++osydddy.:/++/-…-dNNNmmmmmddmmds-:/:-.`..-dNNNNmmmmddmmd+.--..:dNNNNmmmdddddd: `````....`-syhdmNmmd+ysdh` ```````````+-/shyyo:hdddo ``````..-oss+sssydmdddh` `````./oyhdmmmmmmmmy..:--dNNNmmmd+ ``..``-yNNmmms..`/hNNms.:dh+. EOC
Then save with the command ctrl + x then y and enter.
4. Show new cowsay in Home termux
Force close the previous termux application, then open it again and enter the command:
cd ../usr/etc nano bash.bashrc
Then enter the code to display the new cowsay.
clear cowsay -f namacowsay.cow omcyber
Example:
clear cowsay -f cowsayku.cow omcyber
Then save (crtl+x, y, enter).
Now we have succeeded in making our own cowsay. To display the results, close the termux application and reopen or enter season.
Here is the result of my own cowsay.

If on your side there is an error, just write down the problem in the comments column below.
Thanks for reading and helping share too.