Bitmaps v. jpegs v. png, et al...

[Isadore]

I figured you ASP gurus have been in the web business a long time and might be able to provide me with some insight without having to spend hours searching around on the web.

I have discovered that streaming a small "*.png" image on the web doesn't make it to all computers (esp the newer ones) and so I have abandoned their use.

I then created a small images (piece of frame edging) that is 677 bytes as a bitmap and 9K as a jpeg. Not only is the jpeg larger, much larger, but it skews the orginal colors while the smaller bitmap does not.

Any problems streaming a 600 byte bitmap? Should I expect similar problems as with "*.png" images? I'd rather stay with the small bitmaps since they are truer in color and much much smaller (in this case).

Thanks for you time; thought of all the boards here at Tek-Tips you guys would be in the know.

 

[foxbox]

when you save this page with your browser, you'll see that 47 gif's are used. The smallest is w-left.gif (51 bytes) and the largest is hdrlogo.gif (6308 bytes).
I see no problems with 600 byte images, but when you build your page with 100 of such files the resulting page grows and will be slower.
I'm a CSS lover, but you should use GIF

hth,
Foxbox

 

[Isadore]

fox: I think that is what I'm going to do; use "gifs" -- in this case, I currently have 6 images in bitmap form because of their small size. I'll transform them to gifs -- something about streaming the bitmap format bothers me, can't put my finger on it (like the "png" images - some computers can't see them when they are streamed over the web). Thanks.

 

[medic]

Keep in mind though that GIFs have very low color depth (256 colors), unlike JPEGs which have 24-bit color depth (16 million colors). You cannot use GIFs to hold digital pictures.

 

[Isadore]

ok med, thanks. Yes, all digitals will have to be jpegs. What I ended up with is I am using bitmaps for small frame edges as they save around 1K each, whereas jpegs end up around 9K (and with 8 frame elements, adds up). This is peculiar, as I would have though the jpeg would be very small also -- however, have to use bitmaps because the frames are 3 lines of diff shades, and the jpeg mixes them and the frame loose their lust.

My charts are all in gif format, which doesn't have any real depth requirements.

Thanks for the inputs. I still do not like using the bitmaps at all, but they are better looking, and at only 1K each, I am making the assumption that streaming small bitmaps is not an issue.