Hello there - effect this Using graphics on your web page is always a balancing act, the larger (better) the picture, the longer it will take to squirt over the 'net to you PC and display. Also the faster the PC you or your intended audience have or the more bandwidth either of you have, then the higher the metaphorical bar will rise since we could be expected to include full motion video or sound clips or whatever. Like the old rule that programs/processes grow to take up the resources available.


The original is 105,486 bytes - supercompressing in GIF construction kit reduced it to 42,066; no information lost from original. I believe virtually any gif animator prog (except Msoft's one at present[Sept 1998]) would produce very nearly the same (only slightly better or worse results).



No comments - just 'autocaptored' - output from a special chess program that produces BMP's (which convert to small GIFs [about 4K]) of chess diagrams, before compressing 86,305, after 15,655; note that I did not include board coordinates, comments also are lost



The board is cleared of pieces before comments written on it. I also used the a 16 colour pallette and used the option to tell the animator that the figures were 'drawn' & not photorealistic (though this did not make much difference in this instance, I would keep the distinction in mind - refer to use of GIFs Vs JPEGs. 100,571 before compressing, 28,750 after



Some pieces are 'removed' before writing comments on board, on first running in Explorer the board went skew-wiff briefly after move 10, but somehow running another GIF & going back it seemed to right itself, non reproducible since. 105,774 before, 19,001 after



Chess Captor allows not only a configurable header but footer as well, and if I write comments in that space then there is actually less change from board to board, thus giving optimization a better chance; of course probaly more important is that a smaller font is used.This method - probably producing the smallest animation; has the downside of only offering one line of text at a time, a larger blank area could be arranged to be added to each GIF, ensuring that they all line up, but as is elen4 is probably the optimum for mainenance.
107,076 before, 17,799 after - note that the uncompressed GIF is one of the largest, and after compression is one of the smallest.




Last Updated 6 Sept 1998
© copyright 1998 Keith Farrell
any comments or additions : Keith