Windows11 (24H2), display resolution 3840x2160, dpi scale 150%
Viewer - png
there is no full support (view/save/edit) of png 'cheap alpha' transparency (via tRNS values), which is inconvenient
Suggestion
- add save/edit support for all transparency variations via tRNS chunk
- save
- edit
- add visualization of alpha value on index map (eg same as in TweakPNG)
ref
https://www.w3.org/TR/png-3/#11transinfo
http://www.libpng.org/pub/png/book/chap ... ch08.div.5
http://www.libpng.org/pub/png/spec/1.2/ ... C.Anc-trns
Example
- tweakPNG
Related
- issues
1.8.2 - view - png - tRNS transparency - viewing issues
- todo -
1.8.8 - viewer - png - alpha transparency - clipboard issues
1.8.0 - viewer - antialiasing - issue with dpi scaling
1.7.1 - viewer - antialiasing - border at the edge of transparent png
- fixed -
1.8.0 - viewer - change color depth - 32bit result when converting 8 to 24 (1.8.1)
1.6.5 - view - transparent index visible when zooming (1.8.1)
1.7.2 - viewer - Show alpha became disabled (1.8.0)
1.4.0 - viewer / batch convert - Change color depth to 8bit + Filter = mess (feature)
- suggestions
Viewer - png - tRNS transparency - add save/edit for all variations (current post)
Edit palette - indexes selection, color and transparency
- done -
App UI - menu structure - View - improve channel commands (1.9.0)