diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..85e7c1d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/.idea/
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..62c1466
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'org.jetbrains.kotlin.jvm' version '1.3.50'
+    id "com.jfrog.bintray" version "1.8.4"
+}
+
+group 'net.volcanomobile'
+version '0.1'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+}
+
+compileKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+compileTestKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+
+def Properties properties = new Properties()
+properties.load(project.rootProject.file("local.properties").newDataInputStream())
+
+bintray {
+    user = properties.getProperty('bintrayUser')
+    key = properties.getProperty('bintrayApiKey')
+    configurations = ['archives']
+    pkg {
+        repo = 'public'
+        name = 'weservsdk'
+        userOrg = 'volcanomobile'
+        licenses = ['Apache-2.0']
+        vcsUrl = 'https://github.com/VolcanoMobile/weserv-sdk.git'
+        githubRepo = 'VolcanoMobile/weserv-sdk'
+    }
+}
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..29e08e8
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1 @@
+kotlin.code.style=official
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..87b738c
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..e615bb0
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Thu Sep 05 15:48:12 CEST 2019
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-all.zip
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..af6708f
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..6d57edc
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..c9cc186
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = 'weservsdk'
+
diff --git a/src/main/kotlin/net/volcanomobile/weservsdk/Fit.kt b/src/main/kotlin/net/volcanomobile/weservsdk/Fit.kt
new file mode 100644
index 0000000..8d503b9
--- /dev/null
+++ b/src/main/kotlin/net/volcanomobile/weservsdk/Fit.kt
@@ -0,0 +1,12 @@
+package net.volcanomobile.weservsdk
+
+enum class Fit(internal val value: String)
+{
+    Inside("inside"),
+    Outside("outside"),
+    Cover("cover"),
+    Fill("fill"),
+    Contain("contain")
+}
+
+internal fun Fit.toQueryString() = "&fit=$value"
\ No newline at end of file
diff --git a/src/main/kotlin/net/volcanomobile/weservsdk/Size.kt b/src/main/kotlin/net/volcanomobile/weservsdk/Size.kt
new file mode 100644
index 0000000..86bf773
--- /dev/null
+++ b/src/main/kotlin/net/volcanomobile/weservsdk/Size.kt
@@ -0,0 +1,16 @@
+package net.volcanomobile.weservsdk
+
+import java.lang.StringBuilder
+
+data class Size internal constructor(
+    val width: Int?,
+    val height: Int?
+)
+
+internal fun Size.toQueryString() =
+    StringBuilder().apply {
+        if (width != null)
+            append("&w=$width")
+        if (height != null)
+            append("&h=$height")
+    }.toString()
\ No newline at end of file
diff --git a/src/main/kotlin/net/volcanomobile/weservsdk/Weserv.kt b/src/main/kotlin/net/volcanomobile/weservsdk/Weserv.kt
new file mode 100644
index 0000000..b59112f
--- /dev/null
+++ b/src/main/kotlin/net/volcanomobile/weservsdk/Weserv.kt
@@ -0,0 +1,35 @@
+package net.volcanomobile.weservsdk
+
+import net.volcanomobile.weservsdk.builder.WeservBuilder
+import java.net.URLEncoder
+
+private const val BASE_URL = "https://images.weserv.nl/?url="
+
+data class Weserv internal constructor(
+    val url: String,
+    val useSsl: Boolean,
+    val size: Size?,
+    val fit: Fit?,
+    val withoutEnlargement: Boolean
+)
+
+fun weserv(lambda: WeservBuilder.() -> Unit) =
+    WeservBuilder().apply(lambda).build()
+
+fun Weserv.buildUrl() =
+    StringBuilder(BASE_URL).apply {
+        if (useSsl)
+            append("ssl:")
+
+        append(URLEncoder.encode(url, "UTF-8"))
+
+        if (size != null)
+            append(size.toQueryString())
+
+        if (fit != null)
+            append(fit.toQueryString())
+
+        if (withoutEnlargement)
+            append("&we")
+
+    }.toString()
\ No newline at end of file
diff --git a/src/main/kotlin/net/volcanomobile/weservsdk/WeservDsl.kt b/src/main/kotlin/net/volcanomobile/weservsdk/WeservDsl.kt
new file mode 100644
index 0000000..ab6c815
--- /dev/null
+++ b/src/main/kotlin/net/volcanomobile/weservsdk/WeservDsl.kt
@@ -0,0 +1,3 @@
+package net.volcanomobile.weservsdk
+
+@DslMarker internal annotation class WeservDsl
\ No newline at end of file
diff --git a/src/main/kotlin/net/volcanomobile/weservsdk/builder/SizeBuilder.kt b/src/main/kotlin/net/volcanomobile/weservsdk/builder/SizeBuilder.kt
new file mode 100644
index 0000000..e537062
--- /dev/null
+++ b/src/main/kotlin/net/volcanomobile/weservsdk/builder/SizeBuilder.kt
@@ -0,0 +1,15 @@
+package net.volcanomobile.weservsdk.builder
+
+import net.volcanomobile.weservsdk.Size
+import net.volcanomobile.weservsdk.WeservDsl
+
+@WeservDsl
+class SizeBuilder internal constructor() {
+    private var width: Int? = null
+    private var height: Int? = null
+
+    fun width(lambda: () -> Int) { this.width = lambda() }
+    fun height(lambda: () -> Int) { this.height = lambda() }
+
+    fun build() = Size(width, height)
+}
\ No newline at end of file
diff --git a/src/main/kotlin/net/volcanomobile/weservsdk/builder/WeservBuilder.kt b/src/main/kotlin/net/volcanomobile/weservsdk/builder/WeservBuilder.kt
new file mode 100644
index 0000000..b909004
--- /dev/null
+++ b/src/main/kotlin/net/volcanomobile/weservsdk/builder/WeservBuilder.kt
@@ -0,0 +1,45 @@
+package net.volcanomobile.weservsdk.builder
+
+import net.volcanomobile.weservsdk.Fit
+import net.volcanomobile.weservsdk.Size
+import net.volcanomobile.weservsdk.Weserv
+import net.volcanomobile.weservsdk.WeservDsl
+import java.net.URI
+
+@WeservDsl
+class WeservBuilder internal constructor() {
+    private var url: URI? = null
+    private var size: Size? = null
+    private var fit: Fit? = null
+    private var withoutEnlargement = false
+
+    fun url(labmda: () -> String) { url = URI(labmda()) }
+
+    fun size(lambda: SizeBuilder.() -> Unit) { size = SizeBuilder().apply(lambda).build() }
+
+    fun fit(lambda: () -> Fit) { fit = lambda() }
+    fun withoutEnlargement(lambda: () -> Boolean) { withoutEnlargement = lambda() }
+
+    fun build(): Weserv =
+        url?.let { url ->
+            require(url.port == -1) { "Port not allowed" }
+
+            val urlBuilder = StringBuilder("${url.host}${url.path}").apply {
+                if (!url.query.isNullOrBlank()) {
+                    append("?${url.query}" )
+                }
+                if (!url.fragment.isNullOrBlank()) {
+                    append("#${url.fragment}")
+                }
+            }
+
+            return Weserv(
+                urlBuilder.toString(),
+                url.scheme == "https",
+                size,
+                fit,
+                withoutEnlargement
+            )
+
+        } ?: throw IllegalArgumentException("url is null")
+}
\ No newline at end of file