What's new in PngOptimizer 2.7
Nov 24, 2021
- change: ensure the window is fully visible on Windows
- fixed: bad conversion of palette mode PNGs to grayscale
New in PngOptimizer 2.6.2 (Nov 24, 2021)
- fixed: compilation warning with gcc9
- change: new GTK+ interface with header bar
- change: do not overwrite a file if the content stays the same
New in PngOptimizer 2.5.1 (Feb 14, 2017)
- fixed: window position would be always centered instead of being restored to the previous position (Windows only)
- misc: fixed compilation warnings detected by GCC 6
New in PngOptimizer 2.5 (Oct 12, 2016)
- misc: update code for GTK+ version
- misc: reorganize Windows code for multiplatform support
New in PngOptimizer 2.4.3 (Oct 12, 2016)
- misc: updated file structure for git first commit
New in PngOptimizer 2.4.2 (Jun 10, 2014)
- fixed: x64 build failed to open dialog boxes on Windows 8
New in PngOptimizer 2.4.1 (May 28, 2014)
- fixed: Windows XP compatibility for 32 bits build
New in PngOptimizer 2.4 (May 24, 2014)
- misc: updated source code for Visual Studio 2012
- misc: welcome message is centered and appears only when the log window is empty
- fixed: some errors found with VS2012 static analysis tool
- fixed: small UI problem in the screenshots dialog
- change: removed batch summary for single file
New in PngOptimizer 2.3 (Jun 3, 2013)
- new: multithreaded optimization for faster processing on multicore CPUs
- new: better optimization in some cases of greyscale images
- misc: updated ZLib 1.2.5 to 1.2.7 (compression library)
New in PngOptimizer 2.2 (Sep 24, 2012)
- new: support of the ".apng" file extension
- fixed: only lower case file extensions were managed. The extension case is not relevant anymore.
New in PngOptimizer 2.1 (Jun 11, 2012)
- new: option to keep or force pixel physical dimensions (pHYs chunk)
- new: better compatibility for old Windows versions (NT based)
- new: Windows Seven taskbar icon now shows progression of an optimization
- new: better automatic dialogs placement when near screen borders, near taskbar or with multiple monitors
- new: the list is now scrollable with the keyboard
- new: "Done" written at the end of multiple files optimization
- new: screenshot directory dialog can be resized
New in PngOptimizer 2.0 (Aug 24, 2011)
- new: support for APNG for both optimization and conversion (animated GIFs)
- new: x64 version
- new: PNG options moved to their own dialog window
- new: option to ignore animated GIFs
- new: option to keep original file date and time
- new: option to force background color (bkGD chunk)
- new: option to keep or force textual information (tEXt chunk)
- new: always on top option for the main window in the contextual menu
- new: suggested screenshot filename now keeps leading "0" for file number (file 001.png, file 002.png...)
- new: suggested screenshot filename now accepts "-" as a number separator (file-01.png file-02.png...)
- change: AvoidGreyWithSimpleTransparency is now disabled by default (was for IE6 compatibility)
- change: keyboard shortcut to clear the list is slightly less complicated: Ctrl+Delete instead of Ctrl+Shift+Delete
- misc: better results with some cases of indexed color images
- misc: updated ZLib 1.2.3 to 1.2.5 (compression library)
- fixed: bad % reported for large files
- fixed: hangs at startup when loading an empty configuration file(PngOptimizer.ini)
- fixed: could not load GIFs containing non-Netscape application extensions blocks (like XMP data from Photoshop CS)
- fixed: could not load GIFs with a compressed block ending with a terminator instead of an end-of-information code
New in PngOptimizer 1.8 (Feb 20, 2009)
- new: uses Windows XP and Windows Vista theme on those platforms
- new: uses a lot less memory when optimizing
- new: when asking for a screenshot file name: does not select the .png part of the file name
- new: when asking for a screenshot file name: proposes a new file name based on the previous file name
- corrected: freezes on Windows Vista
- corrected: better anti-aliased text in the list
New in PngOptimizer 1.6 (May 26, 2008)
- optimization engine improved
- new: dump of a clean copy of the source PNG file if the compression cannot be improved
- new: directories accepted for drag-and-drop (with recursive optimization)
- new: TGA files accepted
- new: more BMP formats accepted
- new: added an option to optimize screenshots
- new: added an option to ask for the file name of a screenshot
- new: settings stored in a configuration file instead of the registry