Snap Converter

Snap Converter Guide

Single Conversions

To convert single images, drag an image file to the Snap Converter window or to the application dock icon. Alternatively, you may use the File → Open... application menu option. Next, choose your conversion options and click the "Continue" button. From the next view, either drag the converted image from the Snap Converter window to a folder or use the "Save As..." button.

Note: You may drag a different image, folder, or multiple files onto the Snap Converter window to perform a new single or batch image conversion.

      Single Image Conversion Options
      Single Image Conversion options

      Converted Image
      Converted Image view


General Options:

Convert toThe image type to convert to.
JPEG QualityThe quality of the output JPEG images. The higher the quality, the higher the file size. If you specify 100 as the quality, Snap Converter will use lossless compression. This option only displays when the "Convert to" option is set to JPEG.
Optimize File SizeWhether or not to use file size optimization for the output PNG image. This option can significantly reduce the output PNG image size without losing image quality. This option only displays when the "Convert to" option is set to PNG. Optimization will take longer to convert. NOTE: This process uses pngcrush technology and will strip color profile information. Therefore, if you want to retain color profiles, do not use this option.
FilenameThe output filename for the converted image, excluding the file extension.
Preserve MetadataWhether to preserve any image metadata (Exif, ExifAux, TIFF, GIF, JFIF, DNG, etc.). This option is only available for JPG and TIFF output.
Extract AllWhether you would like to extract all icon images from the icon file. This option only displays if an Mac icon file (*.icns) or Windows icon file (*.ico) is being converted. If selected, a separate image will be output for each image in the icon file.* Note that this option, as well as resizing options, are disabled if the "Convert to" type is *.icns.


Resize Options:

(Values are always in pixels unless specified otherwise.)

NoneNo width or height adjustment (the converted image will have its original dimensions). The image width and height are displayed but are not editable.
PercentageThe image width and height are scaled by the percentage specified by the sliding bar. Decimal points are rounded to the nearest integer. The target image width and height (in pixels) are displayed as you change the percentage.
Longest SideMaintains the image aspect ratio but makes sure that the image width and height are not longer than the value specified in the Longest Side field. Images are never enlarged unless the Enlarge smaller images option is checked. If the Longest Side value is blank, the image is not resized.
Absolute SizeResizes the image to whatever width and height are specified. If Constrain Proportions is checked, the width and height change with each other as you edit the fields so that the image aspect ratio is maintained. If you uncheck Constrain Proportions and recheck it again, it resets the original image width and height. If you leave width blank, the original image's width is used (likewise for height).
Fixed Width or HeightSets either the width or height to the specified length and rescales the other dimension by the image's aspect ratio. Images may be shrunk or expanded depending on the value entered. The image is not resized if the value is left blank.
Max Width and HeightEnsures that the resulting width is not larger than Max Width and the resulting height is not larger than Max Height. The image aspect ratio is maintained. If Max Width is left blank, the image's original width is used (same for Max Height).

Batch Conversions

To convert images in batch, first drag a folder or one or more files from any location to the Snap Converter window or to the application dock icon. Alternatively, you may use the File -> Open... application menu option to choose a folder or multiple files. Once a folder or files have been selected, choose your conversion options, click the "Convert" button, and then select an output folder. A progress bar will appear with the conversion progress. You may cancel the conversion by clicking the "Cancel" button.

Note: You may drag a different image, folder, or multiple files onto the Snap Converter window to perform a new single or batch image conversion.

A note about batch conversion behavior: When specifying a folder for batch conversion, Snap Converter only attempts to convert files that have a matching filename extension (e.g., ".jpg," ".png," etc.). This behavior differs from when dragging and dropping single or multiple files--in the case of single or multiple files, Snap Converter attempts to open each file individually irrespective of the file's extension. For example, an extensionless PNG file will still get converted. The folder batch conversion behavior exists for performance reasons. (Consider trying to open every file in every subfolder when the "Include subfolders" option is checked).


      Batch Image Conversion Options
      Batch Image Conversion options

      Batch Image Conversion Progress Bar
      Batch Image Conversion progress

General Options:

Convert fromFiles in the folder with a matching extension will be converted. For example, "JPEG (*.jpg, *.jpeg, *.jpe)" will convert all files with the ".jpg," ".jpeg," or ".jpe" file extensions. Select the "All File Types" option to convert from all supported file types. NOTE: Batch conversions do not include images in sub-folders.
Convert toThe image type to convert to. If the "Copy files (don't convert)" option is selected, the files will be copied to the output directory and not converted.
JPEG QualityThe quality of the output JPEG images. The higher the quality, the higher the file size. If you specify 100 as the quality, Snap Converter will use lossless compression. This option only displays when the "Convert to" option is set to JPEG.
Optimize File SizeWhether or not to use file size optimization for the output PNG image. This option can significantly reduce the output PNG image size without losing image quality. This option only displays when the "Convert to" option is set to PNG. Optimization will take longer to convert. NOTE: This process uses pngcrush technology and will strip color profile information. Therefore, if you want to retain color profiles, do not use this option.
Preserve MetadataWhether to preserve any image metadata (Exif, ExifAux, TIFF, GIF, JFIF, DNG, etc.). This option is only available for JPG and TIFF output.
Include subfoldersShould the batch conversion grab all files in subfolders as well?
Preserve directory structureShould the output directory recreate the directory structure of the input folder? This option is only enabled when "Include subfolders" is checked. If this option is not checked, all files will just be dumped into the same output folder.
Overwrite existing filesShould existing files in the output directory with the same filename be overwritten?

Resize Options:

(values are always in pixels unless specified otherwise)

NoneNo width or height adjustment (the converted image will have its original dimensions).
PercentageThe image width and height are scaled by the percentage specified by the sliding bar. Decimal points are rounded to the nearest integer.
Longest SideMaintains the image aspect ratio but makes sure that the image width and height are not longer than the value specified in the Longest Side field. Images are never enlarged unless the Enlarge smaller images option is checked. If the Longest Side value is blank, the image is not resized.
Absolute SizeResizes the image to whatever width and height are specified. If you leave width blank, the original image's width is used (likewise for height).
Fixed Width or HeightSets either the width or height to the specified length and rescales the other dimension by the image's aspect ratio. Images may be shrunk or expanded depending on the value entered. The image is not resized if the value is left blank.
Max Width and HeightEnsures that the resulting width is not larger than Max Width and the resulting height is not larger than Max Height. The image aspect ratio is maintained. If Max Width is left blank, the image's original width is used (same for Max Height).

Download Snap Converter from the Mac App Store