TweakPNG is a low-level utility for examining and modifying PNG image files. As it works with detailed file internals, a familiarity with the PNG format is useful.
A 64-bit version is included (within the x64 subfolder).
|System Requirements:||WinXP / Vista / Win7 / Win8|
|Writes settings to:||Windows registry. But given the nature of the application and the small number of settings it exposes, I think it can be accepted as portable.|
|How to extract:||Download the ZIP package and extract to a folder of your choice. Launch tweakpng.exe.|
billon on 2014-09-12 03:34Add comment 1›
v1.4.6 is out
JPGVideo creates a video file from a series of JPEG Files. These files can be from any source, as long as they are all the same size. The video can be created using any video codec installed on your machine.
|System Requirements:||WinXP / Vista / Win7|
|Writes settings to:||Application folder|
|How to extract:||
Plamka on 2007-09-23 05:45
Works OK for me. Unpacked, installed, ran it. Tried it with a few pictures -- it converted them to AVI video. Please note that the best results are obtained with pictures of moderate sizes, e.g. 640x480 pixels (most digital cameras will produce much larger pictures, which may cause the codec or this software to malfunction -- in my case it did not cope very well with 5 megapixel pictures). I used another portable freeware to convert all pictures to 640x480 (this was Irfan View, also known as I_VIEW). Hope it will work for you too. Excellent small program.
Ben on 2008-03-14 15:54
I had the same problem as Local...installing it normally it works, but try to move it to another directory and no go...is this app really portable (using v1.05)?
Ben on 2008-03-14 16:16See all 4›
Very strange...it seems to not run if an Explorer Window for the program folder is open...create a shortcut, place it somewhere else, close the open program folder, then run the shortcut, and all's well...?
jpgQ is an image analysis tool that can estimate the quality settings used to save a JPEG image. Since it's difficult to determine the compression level without access to the original, this program can help determine the value (between 1 and 100).
Useful for editors interested in seeing if a JPEG edit will drastically reduce quality, since higher numbers are more likely to survive another instance of lossy compression without serious degradation.
|System Requirements:||Win95 / Win98 / WinME / WinNT / Win2K / WinXP|
|Writes settings to:||None|
|How to extract:||Download the ZIP package and extract to a folder of your choice. Launch JpgQ.exe.|
ImgSearch lets you search and delete similar images across multiple folders. The program even allows checking for similarity from previous image analysis. Files are removed to the Recycle Bin and can be restored in case of a mistake.
Supports analysis of JPG, GIF, BMP, ICO, CUR, WMF, EMF, PNG, PCX image formats.
|System Requirements:||Win98 / WinME / Win2K / WinXP|
|Writes settings to:||None|
|How to extract:||Download the ZIP package and extract to a folder of your choice. Launch ImgSearch.exe.|
RegularPortableFreewareUser on 2009-10-24 15:57
I like this program. It actually does what it's supposed to in a decent amount of time on a retail Vista (dual core) computer. It's sophisticated. I would love if there was an analogous program for sounds too.
Webfork on 2010-01-08 06:51
Works beautifully. Saved me quite a bit of disk space with pictures that were either identical but of slightly different sizes or of the same situation side by side so I could choose the better pic.
__philippe on 2016-03-01 16:35See all 6›
Worthy alternative to ImgSearch (which has not been updated since March 2007) :
JPEG & PNG Stripper is a drag-and-drop metadata stripper/cleaner for one or more JPG/JPEG, JFIF and PNG files, saving disk space and protecting privacy. Metadata carries a variety of information about the camera or device used to take the picture, date it was taken, and other data primarily important for photographers. Because metadata increasingly carries more and more information about the pre-cropped original photo and on where the picture was taken (geo-location), metadata can represent a privacy risk. Deleting metadata usually saves between 1 and 10% of the overall file size.
The program includes a "preview only" feature to show how much space image metadata is taking up.
|System Requirements:||Win95 / Win98 / WinME / WinNT / Win2K / WinXP / Vista / Win7|
|Writes settings to:||User profile folder. But given the nature of the application and the small number of settings it exposes, I think it can be accepted as portable.|
|How to extract:||Download the ZIP package and extract to a folder of your choice. Launch Stripper.exe.|
u64 on 2010-06-18 05:49
Smallest images possible without loosing quality.
Carbonize on 2010-08-29 17:42
Metadata in images is just the same as tags in audio files. They are used to store useful information (OK some of the information is not not that useful to most of us like what camera took the pic). Would be better if this program gave you a list of common metadata and let you tick those you didn't want it to remove.
Simon.T on 2011-02-24 18:49See all 7›