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Posted 4 Jul 2007

Simple ASCII Art Generator

, 18 Jul 2007
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Uses less than 25 lines of code to convert a given picture to an equivalent ASCII picture
Screenshot - ASCII1.jpg


This is a very simple program to convert a given picture into an ASCII Art of 1s & 0s. The output ASCII Image is saved in *.html format.

Using the Code

The code first reads the picture specified by the user into a bitmap object. Then it scans through each pixel of the image and converts it into its equivalent HTML tag, and saves the value into the output.html file.

The final output will look similar to the picture shown above.

StreamWriter sw = File.CreateText(outputPath);
Color color;
//Start of HTML file
sw.Write("<html> \n <body > \n <pre style=\"font: 10px/3px monospace;\">");

Random ran = new Random();
for (int y = 0; y < bmp.Height; y=y+3)
    for (int x = 0; x < bmp.Width; x=x+3)
        int random = ran.Next(2);
        color = bmp.GetPixel(x, y);
        //write the HTML tag corresponding to the pixel color 
        //value of random will be either 1 or 0
        sw.Write("<span style=\"color: #{0:X2}{1:X2}{2:x2};\">{3}</span>", 
            (int)color.R, (int)color.G, (int)color.B, random);


//End of HTML file


Note that we are using a random number generator to produce either 1 or 0 randomly.

int random = ran.Next(2);

Points of Interest

This is a very simple approach to creating color ASCII art. It will be quite simple to modify the above program to output other characters as well (rather than the 1 & 0 used here).

A sample picture created with a modified version of the above program could be found here.

Note: Sometimes, it may take several seconds for the background image to load.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Sajjitha Gunawardana
Web Developer
Sri Lanka Sri Lanka
coding in C# C++ C


Code in English, not Gibberish Smile | :)

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Comments and Discussions

GeneralPossibly re-inventing the wheel...there has been a similar article written prior to yours Pin
daluu30-Dec-07 15:10
memberdaluu30-Dec-07 15:10 
GeneralRe: Possibly re-inventing the wheel...there has been a similar article written prior to yours Pin
Sajjitha Gunawardana31-Dec-07 13:42
memberSajjitha Gunawardana31-Dec-07 13:42 
GeneralEasy way to show all ascii characters Pin
Will Code for Food26-Jul-07 10:26
memberWill Code for Food26-Jul-07 10:26 
Generalthx all the same Pin
todd_yx26-Jul-07 0:36
membertodd_yx26-Jul-07 0:36 
GeneralRe: thx all the same Pin
Sajjitha Gunawardana27-Jul-07 14:47
memberSajjitha Gunawardana27-Jul-07 14:47 
GeneralAdditional features Pin
Papa Beers25-Jul-07 9:22
memberPapa Beers25-Jul-07 9:22 
Questionplz help me on C# Pin
todd_yx25-Jul-07 1:40
membertodd_yx25-Jul-07 1:40 
AnswerRe: plz help me on C# Pin
Sajjitha Gunawardana25-Jul-07 8:58
memberSajjitha Gunawardana25-Jul-07 8:58 
GeneralLOL - Thanks, I needed the laugh! Pin
memberINVALID_HANDLE_VALUE12-Jul-07 22:11 
GeneralIts Cool Pin
wizkiz11-Jul-07 8:11
memberwizkiz11-Jul-07 8:11 
GeneralIt works good Pin
bigRahn9-Jul-07 15:44
memberbigRahn9-Jul-07 15:44 
GeneralRe: It works good Pin
Sajjitha Gunawardana10-Jul-07 5:55
memberSajjitha Gunawardana10-Jul-07 5:55 
GeneralRe: It works good Pin
bigRahn11-Jul-07 6:39
memberbigRahn11-Jul-07 6:39 
GeneralRe: It works good Pin
wizkiz11-Jul-07 8:13
memberwizkiz11-Jul-07 8:13 
GeneralRe: It works good Pin
bigRahn12-Jul-07 4:43
memberbigRahn12-Jul-07 4:43 

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