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minetest_game
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Zweihorn 07c7403050 Strip metadata from PNG `mods/default` textures 
M  default_acacia_tree_top.png
M  default_aspen_tree.png
M  default_aspen_wood.png
M  default_desert_stone_block.png
M  default_desert_stone_brick.png
M  default_dirt.png
M  default_fence_aspen_wood.png
M  default_gravel.png
M  default_ice.png
M  default_jungletree.png
M  default_jungletree_top.png
M  default_lava.png
M  default_meselamp.png
M  default_obsidian_block.png
M  default_river_water_flowing_animated.png
M  default_river_water_source_animated.png
M  default_sandstone_block.png
M  default_silver_sand.png
M  default_stone_brick.png
M  heart.png

All PNG files sized 4 kB and above were processed as follows:

$ for i in "heart.png
default_dirt.png
default_river_water_flowing_animated.png
default_lava.png
default_jungletree.png
default_jungletree_top.png
default_meselamp.png
default_acacia_tree_top.png
default_river_water_source_animated.png
default_gravel.png
default_sandstone_block.png
default_aspen_tree.png
default_desert_stone_brick.png
default_desert_stone_block.png
default_stone_brick.png
default_fence_aspen_wood.png
default_ice.png
default_silver_sand.png
default_aspen_wood.png
default_obsidian_block.png"; do optipng -o2 -strip all $i ; done

** Processing: heart.png
16x16 pixels, 4x8 bits/pixel, RGB+alpha
Reducing image to 8 bits/pixel, 42 colors (1 transparent) in palette
Stripping metadata...
Input IDAT size = 320 bytes
Input file size = 14830 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 126
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 125
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 119
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 117

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 117

Output IDAT size = 117 bytes (203 bytes decrease)
Output file size = 325 bytes (14505 bytes = 97.81% decrease)

** Processing: default_dirt.png
16x16 pixels, 4 bits/pixel, 16 colors in palette
Stripping metadata...
Input IDAT size = 155 bytes
Input file size = 5889 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 155
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 155
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 155
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 155
  zc = 9  zm = 8  zs = 0  f = 5		IDAT size = 155
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 155
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 155
  zc = 9  zm = 8  zs = 3  f = 5		IDAT size = 155

Output IDAT size = 155 bytes (no change)
Output file size = 272 bytes (5617 bytes = 95.38% decrease)

** Processing: default_river_water_flowing_animated.png
16x256 pixels, 4x8 bits/pixel, RGB+alpha
Stripping metadata...
Input IDAT size = 5723 bytes
Input file size = 5851 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 4186

Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 4186

Output IDAT size = 4186 bytes (1537 bytes decrease)
Output file size = 4243 bytes (1608 bytes = 27.48% decrease)

** Processing: default_lava.png
16x16 pixels, 8 bits/pixel, 221 colors in palette
Stripping metadata...
Input IDAT size = 283 bytes
Input file size = 5706 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 283
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 283
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 283
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 283
  zc = 9  zm = 8  zs = 0  f = 5		IDAT size = 283
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 283
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 283
  zc = 9  zm = 8  zs = 3  f = 5		IDAT size = 283

Output IDAT size = 283 bytes (no change)
Output file size = 1015 bytes (4691 bytes = 82.21% decrease)

** Processing: default_jungletree.png
16x16 pixels, 8 bits/pixel, 254 colors in palette
Stripping metadata...
Input IDAT size = 283 bytes
Input file size = 5592 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 283
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 283
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 283
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 283
  zc = 9  zm = 8  zs = 0  f = 5		IDAT size = 283
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 283
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 283
  zc = 9  zm = 8  zs = 3  f = 5		IDAT size = 283

Output IDAT size = 283 bytes (no change)
Output file size = 1114 bytes (4478 bytes = 80.08% decrease)

** Processing: default_jungletree_top.png
16x16 pixels, 8 bits/pixel, 117 colors in palette
Stripping metadata...
Input IDAT size = 268 bytes
Input file size = 5175 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 268
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 268
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 268
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 268

Output IDAT size = 268 bytes (no change)
Output file size = 688 bytes (4487 bytes = 86.71% decrease)

** Processing: default_meselamp.png
16x16 pixels, 8 bits/pixel, 199 colors in palette
Stripping metadata...
Input IDAT size = 281 bytes
Input file size = 5103 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 281
  zc = 9  zm = 8  zs = 0  f = 5		IDAT size = 256
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 256
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 256
  zc = 9  zm = 8  zs = 3  f = 5		IDAT size = 256

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 256

Output IDAT size = 256 bytes (25 bytes decrease)
Output file size = 922 bytes (4181 bytes = 81.93% decrease)

** Processing: default_acacia_tree_top.png
16x16 pixels, 8 bits/pixel, 132 colors in palette
Stripping metadata...
Input IDAT size = 225 bytes
Input file size = 5010 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 225

Output IDAT size = 225 bytes (no change)
Output file size = 690 bytes (4320 bytes = 86.23% decrease)

** Processing: default_river_water_source_animated.png
16x256 pixels, 4x8 bits/pixel, RGB+alpha
Reducing image to 8 bits/pixel, 178 colors (178 transparent) in palette
Stripping metadata...
Input IDAT size = 4807 bytes
Input file size = 4935 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2112

Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2112

Output IDAT size = 2112 bytes (2695 bytes decrease)
Output file size = 2905 bytes (2030 bytes = 41.13% decrease)

** Processing: default_gravel.png
16x16 pixels, 8 bits/pixel, 103 colors in palette
Stripping metadata...
Input IDAT size = 254 bytes
Input file size = 4715 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 254
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 252
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 252
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 252

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 252

Output IDAT size = 252 bytes (2 bytes decrease)
Output file size = 630 bytes (4085 bytes = 86.64% decrease)

** Processing: default_sandstone_block.png
16x16 pixels, 8 bits/pixel, 35 colors in palette
Stripping metadata...
Input IDAT size = 189 bytes
Input file size = 4548 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 189
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 185
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 185
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 185
  zc = 9  zm = 8  zs = 0  f = 5		IDAT size = 177
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 172
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 172
  zc = 9  zm = 8  zs = 3  f = 5		IDAT size = 172

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 172

Output IDAT size = 172 bytes (17 bytes decrease)
Output file size = 346 bytes (4202 bytes = 92.39% decrease)

** Processing: default_aspen_tree.png
16x16 pixels, 8 bits/pixel, 77 colors in palette
Reducing image to 8 bits/pixel, grayscale
Stripping metadata...
Input IDAT size = 231 bytes
Input file size = 4429 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 255
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 253
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 253
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 253

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 253

Output IDAT size = 253 bytes (22 bytes increase)
Output file size = 310 bytes (4119 bytes = 93.00% decrease)

** Processing: default_desert_stone_brick.png
16x16 pixels, 8 bits/pixel, 48 colors in palette
Stripping metadata...
Input IDAT size = 185 bytes
Input file size = 4420 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 185
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 183
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 175
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 175

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 175

Output IDAT size = 175 bytes (10 bytes decrease)
Output file size = 388 bytes (4032 bytes = 91.22% decrease)

** Processing: default_desert_stone_block.png
16x16 pixels, 8 bits/pixel, 40 colors in palette
Stripping metadata...
Input IDAT size = 173 bytes
Input file size = 4368 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 173
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 171
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 169
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 169

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 169

Output IDAT size = 169 bytes (4 bytes decrease)
Output file size = 358 bytes (4010 bytes = 91.80% decrease)

** Processing: default_stone_brick.png
16x16 pixels, 8 bits/pixel, 36 colors in palette
Stripping metadata...
Input IDAT size = 172 bytes
Input file size = 4196 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 172
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 172
  zc = 9  zm = 8  zs = 0  f = 5		IDAT size = 169
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 151
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 151

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 151

Output IDAT size = 151 bytes (21 bytes decrease)
Output file size = 328 bytes (3868 bytes = 92.18% decrease)

** Processing: default_fence_aspen_wood.png
16x16 pixels, 4 bits/pixel, 12 colors in palette
Stripping metadata...
Input IDAT size = 130 bytes
Input file size = 4170 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 130
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 127
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 127
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 127

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 127

Output IDAT size = 127 bytes (3 bytes decrease)
Output file size = 232 bytes (3938 bytes = 94.44% decrease)

** Processing: default_ice.png
16x16 pixels, 8 bits/pixel, 18 colors in palette
Stripping metadata...
Input IDAT size = 112 bytes
Input file size = 4114 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 112
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 110
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 99

Selecting parameters:
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 99

Output IDAT size = 99 bytes (13 bytes decrease)
Output file size = 222 bytes (3892 bytes = 94.60% decrease)

** Processing: default_silver_sand.png
16x16 pixels, 4 bits/pixel, 12 colors in palette
Stripping metadata...
Input IDAT size = 155 bytes
Input file size = 4069 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 155
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 155
  zc = 1  zm = 8  zs = 2  f = 0		IDAT size = 155
  zc = 9  zm = 8  zs = 3  f = 0		IDAT size = 155
  zc = 9  zm = 8  zs = 0  f = 5		IDAT size = 155
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 155
  zc = 1  zm = 8  zs = 2  f = 5		IDAT size = 155
  zc = 9  zm = 8  zs = 3  f = 5		IDAT size = 155

Output IDAT size = 155 bytes (no change)
Output file size = 260 bytes (3809 bytes = 93.61% decrease)

** Processing: default_aspen_wood.png
16x16 pixels, 4 bits/pixel, 12 colors in palette
Stripping metadata...
Input IDAT size = 119 bytes
Input file size = 4023 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 119
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 117

Selecting parameters:
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 117

Output IDAT size = 117 bytes (2 bytes decrease)
Output file size = 222 bytes (3801 bytes = 94.48% decrease)

** Processing: default_obsidian_block.png
16x16 pixels, 4 bits/pixel, 13 colors in palette
Stripping metadata...
Input IDAT size = 95 bytes
Input file size = 3913 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 95

Output IDAT size = 95 bytes (no change)
Output file size = 203 bytes (3710 bytes = 94.81% decrease)
 		2019-05-31 13:08:10 +02:00
..
beds Fix beds being undiggable after laying down 2019-03-23 23:12:44 +00:00
binoculars Binoculars: Update to use 'zoom_fov' player property 2017-12-04 02:54:20 +00:00
boats Boats, carts mods: Use 'initial_properties' table 2018-07-30 00:32:18 +01:00
bones Remove uses of default.gui_bg/bg_img/slots 2019-01-03 01:57:13 +00:00
bucket README.txt files: Change 'LGPL 2.1' to 'LGPLv2.1+'. Remove 'WTFPL' 2018-08-22 01:23:00 +01:00
butterflies Add butterflies mod 2018-06-25 21:28:39 +01:00
carts README.txt files: Change 'LGPL 2.1' to 'LGPLv2.1+'. Remove 'WTFPL' 2018-08-22 01:23:00 +01:00
creative Fix sfinv not updating on creative grant/revoke 2019-02-03 11:45:45 +00:00
default Strip metadata from PNG `mods/default` textures 2019-05-31 13:08:10 +02:00
doors Fix trapdoor side textures and orientations 2019-05-03 23:49:07 +01:00
dungeon_loot Dungeon loot: Avoid empty 'if' branch to satisfy lua check 2019-03-23 23:16:41 +00:00
dye Dye: Remove type="shapeless" from single-item recipes 2019-02-06 19:07:48 +00:00
farming Remove extra empty strings in craft recipes (#2281) 2019-01-02 12:40:32 +01:00
fire fire: Document flammable group, a little code cleanup 2019-03-30 20:33:08 +00:00
fireflies Use group:stick in recipes (fixes #2306) 2019-03-24 10:59:34 +01:00
flowers flowers: Light check optimisation in mushroom spread 2019-03-31 22:20:28 +01:00
game_commands Rename 'killme' mod to 'game_commands', add README and license files 2018-08-24 19:08:06 +01:00
give_initial_stuff Settings: Use new settings object 2017-05-24 07:18:26 +01:00
map Use group:stick in recipes (fixes #2306) 2019-03-24 10:59:34 +01:00
player_api Player_api: New hotbar textures (#2207) 2018-09-14 17:59:49 +01:00
screwdriver README.txt files: Change 'LGPL 2.1' to 'LGPLv2.1+'. Remove 'WTFPL' 2018-08-22 01:23:00 +01:00
sethome Replace deprecated function calls 2018-07-01 20:44:03 +01:00
sfinv Fix sfinv hotbar offset 2019-02-16 20:51:33 +00:00
spawn Spawn mod: Avoid respawn conflict with beds mod (#2240) 2018-10-14 02:36:40 +01:00
stairs Remove extra empty strings in craft recipes (#2281) 2019-01-02 12:40:32 +01:00
tnt Replace deprecated function calls 2018-07-01 20:44:03 +01:00
vessels Remove uses of default.gui_bg/bg_img/slots 2019-01-03 01:57:13 +00:00
walls README.txt files: Change 'LGPL 2.1' to 'LGPLv2.1+'. Remove 'WTFPL' 2018-08-22 01:23:00 +01:00
wool wool: use global 'dye.dyes' table 2019-05-26 20:21:31 +01:00
xpanes New glass, glass stair/slab, and glass door textures 2018-11-02 17:22:54 +00:00