Re: [Gimp-user] Web development question?

On 17 February 2012 09:55, Steve Kinney <admin pilobilus net> wrote:
PNG is a lossless format, so unless you are saving a lot of giant
images and run short of time, there is no reason to dial back the
compression from the default "9".

On 02/16/2012 03:18 PM, Daniel Smith wrote:

I am looking to create some web pages with drupal.
Can anyone tell me their process they use to do
a similar goal? (With drupal or WP, etc.) What I'm thinking
is that certain of the settings are compatible or not with
the blogging engine or not? do you use png or jpeg?, etc.

I usually use jpg format for nearly all web images, because
comparable images saved in png normally have larger file sizes.  The
most potentially interesting feature of png is that it saves
transparency, and *nearly* all web browsers now in use understand
how to display png images with transparent areas.  If you need a
transparent background, and you need higher resolution or better
scalability than the gif format provides, png might be your answer.
Others may know uses for png that I am not aware of, but so far I
have found no use for it in web design.

In re transparency, most of the time you will not need it.  If you
load the page under construction in a web browser and use the
eyedropperin the GIMP foreground/background color tool, you can set
the exact value to make an opaque part of your image match the page
background exactly.

As a point of difference :)

I find myself tending to save the majority of my images (in terms of
developing the site - stripes, decorations, non-content stuff) as

Firstly, I make most of my images from scratch using minimal numbers
of colours to minimise load time anyway so the PNG is almost
invariably a lighter weight option.  For larger pieces such as
banners, photos, avatars, artwork, anything with lots of different
colours, I would probably use JPG.

On the transparency front, I find PNG a huge benefit over GIF.  The
obvious example is for logos/decorative images - GIFs do not have
alpha transparency, a major issue for any shape other than a
rectangle.  Another benefit to using PNGs in websites is being able to
make interesting and lightweight blocks of colour combinations using
repeat-xy backgrounds of semi-transparent images.  eg a 1px black
image at 20% transparency, etc.  I think the last time I saved
anything in GIF was for a favicon...


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