Outils pour utilisateurs
en:pngsave
Ceci est une ancienne révision du document !
Table des matières
Compare save in PNG (jan 2004)
The test
we will use “pngcrush -v -n file.png” to display file informations
original PNG (pngcrushed)
| pngcrush 1.5.10, Copyright (C) 1998-2002 Glenn Randers-Pehrson | This is a free, open-source program. Permission is irrevocably | granted to everyone to use this version of pngcrush without | payment of any fee. | Executable name is pngcrush | It was built with libpng version 1.2.4, and is | running with libpng version 1.2.4 - July 8, 2002 (header) | Copyright (C) 1998-2002 Glenn Randers-Pehrson, | Copyright (C) 1996, 1997 Andreas Dilger, | Copyright (C) 1995, Guy Eric Schalnat, Group 42 Inc., | and zlib version 1.1.4pc, Copyright (C) 1998, | Jean-loup Gailly and Mark Adler. | It was compiled with gcc version 2.95.2 19991024 (release) | and as version 2.9.5 | under DJGPP 2.3, Copyright (C) 1995, D. J. Delorie | and loaded with PMODE/DJ, by Thomas Pytel and Matthias Grimrath | Copyright (C) 1996, Matthias Grimrath. Reading IHDR chunk, length = 13. Reading tIME chunk, length = 7. Reading pHYs chunk, length = 9. Reading IDAT chunk, length = 27740. Reading IEND chunk, length = 0. Recompressing F:\DAUPHIN.png Total length of data found in IDAT chunks = 27740 IHDR chunk data: Width=737, height=472 Bit depth =8 Color type=2 Interlace =0 Setting IHDR CPU time used = 0.000 seconds (decoding 0.000, encoding 0.000, other 0.000 seconds)
Photoshop 7.01 (adding sRGB profile + add information about picture)
| pngcrush 1.5.10, Copyright (C) 1998-2002 Glenn Randers-Pehrson | This is a free, open-source program. Permission is irrevocably | granted to everyone to use this version of pngcrush without | payment of any fee. | Executable name is pngcrush | It was built with libpng version 1.2.4, and is | running with libpng version 1.2.4 - July 8, 2002 (header) | Copyright (C) 1998-2002 Glenn Randers-Pehrson, | Copyright (C) 1996, 1997 Andreas Dilger, | Copyright (C) 1995, Guy Eric Schalnat, Group 42 Inc., | and zlib version 1.1.4pc, Copyright (C) 1998, | Jean-loup Gailly and Mark Adler. | It was compiled with gcc version 2.95.2 19991024 (release) | and as version 2.9.5 | under DJGPP 2.3, Copyright (C) 1995, D. J. Delorie | and loaded with PMODE/DJ, by Thomas Pytel and Matthias Grimrath | Copyright (C) 1996, Matthias Grimrath. Reading IHDR chunk, length = 13. Reading pHYs chunk, length = 9. Reading iCCP chunk, length = 2617. Reading gAMA chunk, length = 4. Reading cHRM chunk, length = 32. Reading IDAT chunk, length = 53632. Reading IEND chunk, length = 0. Recompressing F:\DAUPHIN_.png Total length of data found in IDAT chunks = 53632 IHDR chunk data: Width=737, height=472 Bit depth =8 Color type=2 Interlace =0 Setting IHDR gamma=(45454/100000) Got iccp chunk, proflen=3144 CPU time used = 0.055 seconds (decoding 0.055, encoding 0.000, other 0.000 seconds)
ACDSEE 5 (default)
| pngcrush 1.5.10, Copyright (C) 1998-2002 Glenn Randers-Pehrson | This is a free, open-source program. Permission is irrevocably | granted to everyone to use this version of pngcrush without | payment of any fee. | Executable name is pngcrush | It was built with libpng version 1.2.4, and is | running with libpng version 1.2.4 - July 8, 2002 (header) | Copyright (C) 1998-2002 Glenn Randers-Pehrson, | Copyright (C) 1996, 1997 Andreas Dilger, | Copyright (C) 1995, Guy Eric Schalnat, Group 42 Inc., | and zlib version 1.1.4pc, Copyright (C) 1998, | Jean-loup Gailly and Mark Adler. | It was compiled with gcc version 2.95.2 19991024 (release) | and as version 2.9.5 | under DJGPP 2.3, Copyright (C) 1995, D. J. Delorie | and loaded with PMODE/DJ, by Thomas Pytel and Matthias Grimrath | Copyright (C) 1996, Matthias Grimrath. Reading IHDR chunk, length = 13. Reading tIME chunk, length = 7. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 7251. Reading IEND chunk, length = 0. Recompressing F:\DAUPHIN_acd.png Total length of data found in IDAT chunks = 48211 IHDR chunk data: Width=737, height=472 Bit depth =8 Color type=2 Interlace =0 Setting IHDR CPU time used = 0.000 seconds (decoding 0.000, encoding 0.000, other 0.000 seconds)
Xnview 1.60 (compression level 9)
| pngcrush 1.5.10, Copyright (C) 1998-2002 Glenn Randers-Pehrson | This is a free, open-source program. Permission is irrevocably | granted to everyone to use this version of pngcrush without | payment of any fee. | Executable name is pngcrush | It was built with libpng version 1.2.4, and is | running with libpng version 1.2.4 - July 8, 2002 (header) | Copyright (C) 1998-2002 Glenn Randers-Pehrson, | Copyright (C) 1996, 1997 Andreas Dilger, | Copyright (C) 1995, Guy Eric Schalnat, Group 42 Inc., | and zlib version 1.1.4pc, Copyright (C) 1998, | Jean-loup Gailly and Mark Adler. | It was compiled with gcc version 2.95.2 19991024 (release) | and as version 2.9.5 | under DJGPP 2.3, Copyright (C) 1995, D. J. Delorie | and loaded with PMODE/DJ, by Thomas Pytel and Matthias Grimrath | Copyright (C) 1996, Matthias Grimrath. Reading IHDR chunk, length = 13. Reading pHYs chunk, length = 9. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 5939. Reading IEND chunk, length = 0. Recompressing F:\\DAUPHIN_xn.png Total length of data found in IDAT chunks = 46899 IHDR chunk data: Width=737, height=472 Bit depth =8 Color type=2 Interlace =0 Setting IHDR CPU time used = 0.055 seconds (decoding 0.055, encoding 0.000, other 0.000 seconds)
Paint shop pro 7 (with or without color management activated + add information about picture)
| pngcrush 1.5.10, Copyright (C) 1998-2002 Glenn Randers-Pehrson | This is a free, open-source program. Permission is irrevocably | granted to everyone to use this version of pngcrush without | payment of any fee. | Executable name is pngcrush | It was built with libpng version 1.2.4, and is | running with libpng version 1.2.4 - July 8, 2002 (header) | Copyright (C) 1998-2002 Glenn Randers-Pehrson, | Copyright (C) 1996, 1997 Andreas Dilger, | Copyright (C) 1995, Guy Eric Schalnat, Group 42 Inc., | and zlib version 1.1.4pc, Copyright (C) 1998, | Jean-loup Gailly and Mark Adler. | It was compiled with gcc version 2.95.2 19991024 (release) | and as version 2.9.5 | under DJGPP 2.3, Copyright (C) 1995, D. J. Delorie | and loaded with PMODE/DJ, by Thomas Pytel and Matthias Grimrath | Copyright (C) 1996, Matthias Grimrath. Reading IHDR chunk, length = 13. Reading tEXt chunk, length = 11. Reading tEXt chunk, length = 16. Reading tEXt chunk, length = 10. Reading tEXt chunk, length = 14. Reading tIME chunk, length = 7. Reading pHYs chunk, length = 9. Reading gAMA chunk, length = 4. Reading IDAT chunk, length = 45857. Reading IEND chunk, length = 0. Recompressing F:\DAUPHIN_psd_psp.png Total length of data found in IDAT chunks = 45857 IHDR chunk data: Width=737, height=472 Bit depth =8 Color type=2 Interlace =0 Setting IHDR gamma=(45455/100000) 0 Title: titre 1 Description: desc 2 Author: nom 3 Copyright: copy CPU time used = 0.055 seconds (decoding 0.055, encoding 0.000, other 0.000 seconds)
IrfanView 3.85 (compression level 9)
| pngcrush 1.5.10, Copyright (C) 1998-2002 Glenn Randers-Pehrson | This is a free, open-source program. Permission is irrevocably | granted to everyone to use this version of pngcrush without | payment of any fee. | Executable name is pngcrush | It was built with libpng version 1.2.4, and is | running with libpng version 1.2.4 - July 8, 2002 (header) | Copyright (C) 1998-2002 Glenn Randers-Pehrson, | Copyright (C) 1996, 1997 Andreas Dilger, | Copyright (C) 1995, Guy Eric Schalnat, Group 42 Inc., | and zlib version 1.1.4pc, Copyright (C) 1998, | Jean-loup Gailly and Mark Adler. | It was compiled with gcc version 2.95.2 19991024 (release) | and as version 2.9.5 | under DJGPP 2.3, Copyright (C) 1995, D. J. Delorie | and loaded with PMODE/DJ, by Thomas Pytel and Matthias Grimrath | Copyright (C) 1996, Matthias Grimrath. Reading IHDR chunk, length = 13. Reading pHYs chunk, length = 9. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 8192. Reading IDAT chunk, length = 5939. Reading IEND chunk, length = 0. Recompressing F:\cdagraver\NashCDmix5\nashcd13\Internet\DAUPHIN_irf.png Total length of data found in IDAT chunks = 46899 IHDR chunk data: Width=737, height=472 Bit depth =8 Color type=2 Interlace =0 Setting IHDR CPU time used = 0.000 seconds (decoding 0.000, encoding 0.000, other 0.000 seconds)
what we see ?
My conclusion
en/pngsave.1294874323.txt.gz · Dernière modification: 2020/01/13 23:33 (modification externe)
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