Viewing post in PixaTool v1.58 Released !! comments
You can resize the image in the tool or set the Pixelsize horizontal/vertical whatever you want, but when you export you do at 1:1 scale. This means that if you impor a 512x512 image and you set pixel size Horizontal/vertical to 4, the exported image will be 128x128, due 512/4 = 128.
About the zoom in/out , yeah the image moves, so be carefull, btw you can double-click on the image to set in center again (if i remember well)
Detail changes in zoom in/out may be for different reasons, like dithering and how other shader works that are not resolution independent, which means you can get some different details in some cases.
There is no resize option in the tool. You can pixelate and export. On export is resized based on your Pixelate settings.
If maybe there is too much difference you can always do a screenshot. Due all effects is based on shaders, user resolution and GPU may differ how they are processed. Afaik, there is not a big problem, but yeah all depends on what you're doing. Also i recommend use the tool in fullscreen, due windowed/fullscreen the shader can alter some details, so full screen for best compatibility-close to the export.