XnView Software

Problematic image:



INCORRECT DISPLAY:



CORRECT DISPLAY:



My configuration of xnview:
[/list]

Please enable 'Use alpha channel'

xnview wrote:Please enable 'Use alpha channel'

This setting has no effect, because we're dealing with a grayscale PNG.

My own “collection” so far:

• https://s.fsdn.com/sf/images/phoneix/splash.png
• http://code.google.com/apis/themes/images/white.png
• http://www.google.com/ig/modules/datetime_content/clock.png
• http://www.google.com/ig/modules/datetime_content/hh.png
• http://www.google.com/ig/modules/datetime_content/hm.png
• http://www.google.com/intl/en_ALL/mapfiles/iws2.png

Webshots.com and others use translucent PNGs to allow their users to switch the site's color scheme on the fly (i.e. w/o loading additional page elements):

• http://p.webshots.net/images/logo/logo_webshots_264x57.png
• http://p.webshots.net/images/btn/btn_login_53x23.png
• http://p.webshots.net/images/btn/btn_login_hvr_51x23.png
• http://p.webshots.net/images/grfk/grfk_alerts_border_top.png
• http://p.webshots.net/images/grfk/grfk_alerts_border_bottom.png

Links of interest:

• Willem van Schaik: PngSuite » Basic formats (basn4a08.png, basn4a16.png etc.)
• Jason Summers: Browser Testbed » PNG transparency test » Grayscale alpha transparency (transbla.png, gray8a.png etc.)
• Digital Web Magazine: Creative Use of PNG Transparency in Web Design
• David Hellsing's ••• SPAM •••: Scalable CSS Buttons Using PNG and Background Colors (shade.png)
• IcoBlog: Semi Transparent .PNG Buttons (Glassy-Button.png)
• Drupal Theming Guide: Integrating color module (base.png)
• Karmatics: Chameleon Color Picker (bird.png, corvette.png, smurf.png etc.)

xnview wrote:Please enable 'Use alpha channel'

I dare to say: there is no such option. All I find is the opposite, 'Ignore alpha channel'.

pic_viewer wrote:

xnview wrote:Please enable 'Use alpha channel'

I dare to say: there is no such option. All I find is the opposite, 'Ignore alpha channel'.

I dare to disagree: View » Use alpha channel (Ctrl+H).

XnTriq wrote:

pic_viewer wrote:

xnview wrote:Please enable 'Use alpha channel'

I dare to say: there is no such option. All I find is the opposite, 'Ignore alpha channel'.

I dare to disagree: View » Use alpha channel (Ctrl+H).

So with Pierre's totally clear hint I searched for half an hour in Options for this entry. After your note I looked again and did not find it anywhere. I then noticed the underscore V and looked in the menu - nowhere to find. 5 minutes later I realize that I am in browser mode. Change to Viewer and there it is.

Now someone just needs to explain to me why the options >Enable Alpha channel, Ignore Alpha channel, Compose image with alpha< , not to mention the extra transparency option, are in any way logical and self-explanatory...

pic_viewer wrote:Now someone just needs to explain to me why the options >Enable Alpha channel, Ignore Alpha channel, Compose image with alpha< , not to mention the extra transparency option, are in any way logical and self-explanatory...

XnTriq ([url=http://newsgroup.xnview.com/viewtopic.php?p=68042#68042]PNG 32 BPP wrongly displayed…[/url]) wrote:

Clo wrote:• However, I think that this option as it's set is totally illogical, unclear and confusing…
- Besides, there are too many scattered options about the Alpha channel and transparency,
I'ld like them grouped and clear…

+1