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IrfanView 4.10 Online Manual

A full-featured graphics viewer for Windows IrfanView is a fast and simple image viewer and editor that supports all major graphic formats, including BMP, DIB, JPEG, GIF, animated GIF, PNG, PCX, multipage TIFF, TGA, and more.

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Online Manual of IrfanView 4.10
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Save, Options PNG / PBM/PGM/PPM / ICO

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PNG

Set the compression level and transparent color (similar to GIF/ICO) for PNG images. Note:
PNG is a lossless format (like GIF) with true color support. It is usually the ideal format for screenshots, because the file size for this images is often much smaller as i.e. JPG, the saved image has at the same time no loss in quality and can be read by many programs.

You can also try the PNGOUT PlugIn for optimized PNG saving. It can reduce the result file size.


PBM
, PGM, PPM

Click one of the option buttons to set an encoding type for PBM/PGM/PPMs. Ascii will produce very large files.


ICO


You can save transparent ICO images with the click on the preview image during the saving.


After setting the options you choose, click Save to save the image and store the settings. To exit without saving the file or changed options, click Cancel.

The new settings will stay in effect until you change them again.

See also:

Save  
Save As  
Save, Options JPEG/GIF  
Save, Options JPEG2000  
Save, Options JPM  
Save, Options LDF  
Save, Options LWF  
Save, Options TIFF  

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