Free SVG to PNG converter

Goal

Manage your Icons in SVG and generate the needed PNG into your projects as needed. No "Web Service" needed, just an executable JAR file. This library is based on batik

Supported platforms

Only platforms with a full Java JRE are supported like:

• Windows
• Linux
• Mac OS

Not supported platforms

Android

Batik SVG Toolkit isn't supported by android because of the missing Java2D API

Tested Java distributions

• zulu
• graalvm

temurin version 11 failed in the ci/cd build.

• 1.2.x => JDK 8
• 1.3.x => JDK 11

Download & Requirements

• Download latest release version of svg2png
  • Or from maven
• You have to have Java 8 installed on your PC
• Sidenote: Google Android Icons

CLI Options

file: Can be set for each file individually, see json config, or for all using a cli option. The name can be used in the files.

CLI	CLI long	Name	Level	Description
w	width	width	file	Image width in pixel
h	height	height	file	Image height in pixel
n	name	name	file	Output name of the image
o	out-dir	directory	file	Output directory for this image
	background-color	backgroundColor	file	Provide a custom background color to use for opaque image formats e.g. 0077FF.

CLI Usage

================================================================================
                                   SVG to PNG                                   

usage: svg2png
 -a,--no-alpha <arg>           Saves PNG without alpha channel and with
                               specified background hex triplet. (Needed
                               for iOS assets.)
    --android                  Android Icon 48dp mdpi 48x48 -> xxxhdpi
                               192x192.
    --android-24dp             Android 24dp icons, with suffix _24dp --
                               mdpi 24x24 -> xxxhdpi 96x96.
    --android-36dp             Android 36dp icons, with suffix _36dp --
                               mdpi 36x36 -> xxxhdpi 144x144.
    --android-48dp             Android 48dp icons, with suffix _48dp --
                               mdpi 48x48 -> xxxhdpi 192x192.
    --android-icon             Android Icon (Action Bar, Dialog etc.)
                               config mdpi 36x36 -> xxxhdpi 128x128.
    --android-launch           Android Launcher Icon config mdpi 48x48 ->
                               xxxhdpi 192x192.
    --android-small            Android Small default config from mdpi
                               24x24 -> xxxhdpi 96x96.
    --background-color <arg>   Provide a custom background color to use
                               for opaque image formats e.g. 0077FF.
 -c,--config <arg>             JSON Config file for the file output.
 -d,--in-dir <arg>             Source directory with one or more files to
                               convert.
 -e,--allow-external           Allow external entities to be loaded by the
                               SVG.
 -f,--file <arg>               Source file to convert.
 -h,--height <arg>             Height of the output file.
    --ios                      iOS icons and Contents.json.
 -n,--name <arg>               New name to use for all output files.
 -o,--out-dir <arg>            Output directory where to put the file.
    --transparent-white        This is a trick so that viewers which do
                               not support the alpha channel will see a
                               white background (and not a black one).
 -w,--width <arg>              Width of the output file.

CLI Samples

• use either java -jar svg2png
• or download the executable jar and use svg2png

# just convert one file, will create a foo.png as result
java -jar svg2png.jar foo.svg

# generate a PNG with a custom name
java -jar svg2png.jar -f foo.svg -n bar.png

# convert all files in a directory to a output directory
java -jar svg2png.jar -d /Pictures/icons/svg -o /Pictures/icons/png

# generate a 512x512 PNG
java -jar svg2png.jar -w 512 -h 512 -f foo.svg

# convert a directory with a JSON configuration
java -jar svg2png.jar -d . -c my.json

# convert SVG files using the default Android configuration
java -jar svg2png.jar -d . -o /dev/workset/android-project/app/src/main/res --android

# Convert all *.svg files in the current directory to 24dp android png files (generates drawable-* directories)
java -jar svg2png.jar --android-small -d .

# Convert 'my_picture.svg' using the android profile 48dp (generates drawable-* directories)
java -jar svg2png.jar --android -f my_picture.svg

# Converts 'my-logo.svg' as android logo 48dp, using ic_launcher.png as name, generates into mipmap-* directories
java -jar svg2png.jar --android-launch -f my-logo.svg

# convert all files in the directory '/Picures/icons/svg' and use '/Pictures/icons/png' as the output directory
java -jar svg2png.jar -d /Picures/icons/svg -o /Pictures/icons/png

# convert with a JSON configuration
java -jar svg2png.jar -d . -c my.json

# convert SVG to iOS icons with an orange background
java -jar svg2png.jar -f foo.svg -n bar -o icons --ios --no-alpha ffbd33

# select a custom background color
java -jar svg2png.jar --background-color 6610f2 -f sample.svg

JSON Android Config Sample

{
    "files": [
        {
            "directory": "drawable-xxxhdpi",
            "nameSuffix": "_24dp",
            "height": 96,
            "width": 96
        },{
            "directory": "drawable-xxhdpi",
            "nameSuffix": "_24dp",
            "height": 72,
            "width": 72
        },{
            "directory": "drawable-xhdpi",
            "nameSuffix": "_24dp",
            "height": 48,
            "width": 48
        },{
            "directory": "drawable-hdpi",
            "nameSuffix": "_24dp",
            "height": 36,
            "width": 36
        },{
            "directory": "drawable-mdpi",
            "nameSuffix": "_24dp",
            "height": 24,
            "width": 24
        }
    ]
}

Links

• https://developer.android.com/training/multiscreen/screendensities