JnZ / jpg2html

JnZ / jpg2html

This is the very plain home page for the various versions of jpg2html written by me. jpg2html converts JPEG images into HTML. A series of jpg2html are being written to explore different encoding algorithms.

• view the original jpeg compressed test image (6,574 bytes). The image is 152×239 pixels in 24-bit color and so contains 108,984 bytes of image data. By this definition, jpeg shrinks the data to just 6.0% of the original size.
  
• view the output from jpg2html (486,003 bytes). jpg2html renders the image as HTML using <pre /> and <font /> elements. Consecutive pixels of the same color generate only one <font /> element. jpg2html enlarges the data to 445.9% of the original size.
  
• view the output from jpg2html2 (539,161 bytes). jpg2html2 renders the image as HTML using <table />, <tr /> and <td /> elements. Consecutive pixels of the same color generate only one <td /> element specifying the length via the colspan attribute. jpg2html enlarges the data to 494.7% of the original size.
  
• view the output from jpg2html3 (121,543 bytes). jpg2html3 encodes the image on a row by row basis into JavaScript strings of the form “N#RRGGBB” where the optional N is the number of times the following RRGGBB color value appears. If N is not present it is assumed to be 1. These JavaScripts strings are subsequently decoded and rendered as per jpg2html2. jpg2html3 enlarges the data to 111.5% of the original size including the decoding and rendering code.
  
• view the output from jpg2html4 (91,052 bytes) jpg2html4 encodes the image on a row by row basis into JavaScript strings of the form “N=WXYZ” where the optional N is the number of times the following WXYZ color value appears. If N is not present it is assumed to be 1. WXYZ is the RRGGBB color value encoded in base64. These JavaScripts strings are subsequently decoded and rendered as per jpg2html2. jpg2html4 shrinks the data to 83.5% of the original size, including the decoding and rendering code.
  
• view the output from jpg2html5 (75,627 bytes) jpg2html5 encodes the image on a row by row basis into JavaScript strings of the form “ABCWXYZ” where the optional ABC is the number of times the following WXYZ color value appears. If ABC is not present it is assumed to be 1. ABC is a variable length string which is encoded in base16 using a shifted character set to avoid clashing with the regular base64 encoding. WXYZ is the RRGGBB color value encoded in base64. These JavaScripts strings are subsequently decoded and rendered as per jpg2html2. jpg2html5 shrinks the data to 69.4% of the original size, including the decoding and rendering code.
  
• download all of above in a tar.bz2 file (158,750 bytes)
  
• visit the SourceForge.net project info page
  
• download source code and compiled binaries at SourceForge.net project filelist page
  
• download local copy of the compiled 32-bit Windows binaries of the various jpg2html in a tar.bz2 file (412,422 bytes)
  
• download local copy of the source codes of the various jpg2html in a tar.bz2 file (4,499 bytes)

This entry was posted on Tuesday, October 28th, 2003 at 1:59 pm and is filed under Odds'n'Ends. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed. Edit this entry.