{"componentChunkName":"component---src-templates-post-js","path":"/2011/07/07/batch-pngout-file-compressor/","result":{"data":{"site":{"siteMetadata":{"title":"Terry Butler","author":"Terry Butler"}},"markdownRemark":{"id":"3fb656e7-3794-5c43-9732-c890b6d59e2f","html":"

This is a batch file I wrote to handle the compression directories full of PNG files using Ken Silverman’s amazing PNGOUT tool.

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Bear in mind that this isn’t exactly a replacement for PNGOUTWin which supports asynchronous file compression taking advantage of multiple cores, this is merely a batch file that recursively navigates through a given directory and throws all PNGs one at a time at PNGOUT.

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Output example:

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Output for D:\\Images\\ for 88 files\n1252 kb before\n922 kb after\nsaving a total of 330 kb (26%)\nPress any key to continue . . .

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Instructions:

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  1. \n

    Download Ken Silverman’s command line PNGOUT tool (as provided in the link)

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    2. \n
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    Set the path for the pngo variable in the batch file

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    3. \n
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    Run the batch file simply like so

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    4. \n
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  1. Optional: Create a shortcut to the batch file and place it in your SendTo folder for your user account for the sake of convenience
    2. \n
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Here is a preview of the batch file or you can download the batch file itself at the bottom of the post.

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::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n:: PNGOut Compressor Batch File v1.0\n::\n:: Author: Terry J. Butler\n:: Website: /\n:: Post URI: /2011/07/07/batch-pngout-file-compressor/\n:::READ ME::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n:: Distribute this batch file as you'd like but I ask that you please leave this\n:: commented header section intact.\n:: If you want to modify this batch file, I ask that you give credit where credit\n:: is due.\n::\n:: Thanks to Ken Silverman for the fantastic PNGOut. Nothing compares to it.\n:: You'll need to download it from http://advsys.net/ken/utils.htm, place it
\n:: somewhere convenient and change the path to it for the 'pngo' variable under the\n:: \"CONFIGURATION\" header\n::\n:: Thanks to the NT reference at SS64.com (http://ss64.com/nt/) for an incredible\n:: wealth of information that helped shape this batch file\n::\n:: Head to the link in the Post URI above for further details on how to use.\n:::CHANGE LOG:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n::\n:: v1.0\n:: - Initial Release\n::\n:::CONFIGURATION::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n:: Set this path to the locaation of your pngout.exe file\nSET pngo=\"D:\\tools\\pngout.exe\"\n::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

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@echo off

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:: Setting EnabledDelayedExpansion will cause each variable to be expanded at execution\n:: time rather than at parse time. EnableDelayedExpansion is Disabled by default.\nsetLocal EnableDelayedExpansion

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:: set some arithmetic capable variables\nset /a value=0\nset /a sum=0\nset /a sumOriginal=0\nset /a count=0\nset /a diff=0\nset /a diffPercent=0

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pushd %1

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FOR /R %%G IN (\\*.png) DO (\n\techo Now Compressing %%G \n\t\n\tset /a value=%%~zG\n\tset /a sum=!sum!+!value!\t\n\tset /a count+=1\n\t%pngo% "%%G"\n)\n\nset /a sumOriginal=sum/1024\n\nset /a value=0\nset /a sum=0\n\nFOR /R %%G IN (\\*.png) DO (\n\tset /a value=%%~zG\n\tset /a sum=!sum!+!value!\t\n)\n\nset /a sum=sum/1024\t\nset /a diff=!sumOriginal!-!sum!\t\nset /a diffPercent=(100\\*(!sumOriginal!-!sum!))/!sumOriginal!;\t\n\n@echo Output for %CD% for %count% files\n@echo !sumOriginal! kb before\n@echo !sum! kb after\t\n\n@echo saving a total of !diff! kb (!diffPercent!%% decrease)
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popd

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:: Unset variables\nSET _value=\nSET _sum=\nSET _sumOriginal=\nSET _count=\nSET _diff=\nSET _diffPercent=

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pause

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Download pngout-batch.bat

\n","frontmatter":{"title":"Batch PNGOut File Compressor","date":"July 07, 2011","categories":["Uncategorized"],"tags":null,"featuredImage":null}}},"pageContext":{"slug":"/2011/07/07/batch-pngout-file-compressor/","previous":{"fields":{"slug":"/2011/05/30/mod-monday-92/","sourceName":"posts"},"excerpt":"This is “Einstein-2c8” by Einstein (Poul Peder Hestbek). Download MP3 Download MOD","frontmatter":{"title":"MOD Monday #92","date":"May 30, 2011","categories":["MOD Monday"],"tags":["Einstein","Poul Peder Hestbek"],"featuredImage":null}},"next":{"fields":{"slug":"/2011/08/09/worth-see-ray-tracing-videos/","sourceName":"posts"},"excerpt":"Animated Sparse Voxel Octrees: In-depth pt1/3 Animated Sparse Voxel Octrees: In-depth pt2/3 Animated Sparse Voxel Octrees: In-depth pt3/3 Interactive Indirect Illumination Using Voxel Cone Tracing","frontmatter":{"title":"Worth-See Ray Tracing Videos","date":"August 9, 2011","categories":["Uncategorized"],"tags":["CyrilCrassin","QuadTree","Radulphi","Ray Tracing","Sparse Voxel Octree","SVC","Videos","YouTube"],"featuredImage":null}}}},"staticQueryHashes":["63159454"]}