Free png software for windows

png Stitch stitches together png images vertically (like TrentStitch) - mainly to make my life easier when making knobs for vst plugins.
Ive only tested it with 32 bit images though (i.e. 8 bit alpha, 24 bit colour) - Theres a good chance itll fail miserably if you try and use anything else.
I dont know how many images itll handle either - I managed to stitch together 115 without any problems, so you should be ok.

This application will flatten multilayer png and for multi frame png it will convert the first frame only. Batch PNG to JPG is a handy png to jpg converter addresses to you who need to do a batch image conversion from png picture to jpg image. It will flatten multilayer png and for multi frame png it will convert the first frame only.
Simply add folders containing png files or manually select multiple png, set the output folder where you want the jpg images stored then set the jpg quality according to your preference. Then all you have to do is start converting.
Main features:
- Convert PNG to JPG.
- Add png in a folder at once.
- Add single or multiple png picture located in different folders.
- Instant preview window.
- Customize output JPG quality.

Exorcist GIF to PNG is a freeware utility designed to convert GIF images files to the PNG "ping" format.
Main features:
- Drag and drop interface.
- Background batch operation.
- Persistant configuration.
- Optionally move GIF files to recycle bin.