diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+MIT License
+
+Copyright (c) 2020 Alan Tai
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
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+Resizer
+=======
+Resize any windows in macOS with ease.
+
+
+
+
+
+## Features
+* Resize any application windows
+* Support 4:3, 3:2, 16:10 and 16:9 resolutions
+
+## Getting started
+1. Double-click `install.command` to install Resizer as a systemwide service
+2. Click on any window you want to resize
+3. Click menu > Services > Resize
+4. Select a preferred size and click OK
+
+## Under the hood
+Resizer is an [Automator Workflow](https://support.apple.com/en-hk/guide/automator/welcome/mac) installed as a systemwide service. For some application windows, you may need to authorize the accessibility permission in System Preferences.
+
+
+
+
diff --git a/Resize.workflow/Contents/Info.plist b/Resize.workflow/Contents/Info.plist
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index 0000000..08aca3a
--- /dev/null
+++ b/Resize.workflow/Contents/Info.plist
@@ -0,0 +1,22 @@
+
+
+
+
+ NSServices
+
+
+ NSBackgroundColorName
+ background
+ NSIconName
+ NSActionTemplate
+ NSMenuItem
+
+ default
+ Resize
+
+ NSMessage
+ runWorkflowAsService
+
+
+
+
diff --git a/Resize.workflow/Contents/document.wflow b/Resize.workflow/Contents/document.wflow
new file mode 100644
index 0000000..882da0a
--- /dev/null
+++ b/Resize.workflow/Contents/document.wflow
@@ -0,0 +1,152 @@
+
+
+
+
+ AMApplicationBuild
+ 492
+ AMApplicationVersion
+ 2.10
+ AMDocumentVersion
+ 2
+ actions
+
+
+ action
+
+ AMAccepts
+
+ Container
+ List
+ Optional
+
+ Types
+
+ com.apple.applescript.object
+
+
+ AMActionVersion
+ 1.0.2
+ AMApplication
+
+ Automator
+
+ AMParameterProperties
+
+ source
+
+
+ AMProvides
+
+ Container
+ List
+ Types
+
+ com.apple.applescript.object
+
+
+ ActionBundlePath
+ /System/Library/Automator/Run AppleScript.action
+ ActionName
+ Run AppleScript
+ ActionNameComment
+
+ ActionParameters
+
+ source
+ on run
set currentApplication to path to frontmost application as text
set choice to (choose from list {"4:3 - 640x480", "4:3 - 720x540", "4:3 - 800x600", "4:3 - 900x675", "4:3 - 960x720", "4:3 - 1024x768", "4:3 - 1080x810", "4:3 - 1152x864", "4:3 - 1200x900", "4:3 - 1280x960", "3:2 - 750x500", "3:2 - 810x540", "3:2 - 900x600", "3:2 - 960x640", "3:2 - 1080x720", "3:2 - 1152x768", "3:2 - 1200x800", "3:2 - 1296x864", "3:2 - 1350x900", "3:2 - 1440x960", "16:10 - 768x480", "16:10 - 800x500", "16:10 - 864x540", "16:10 - 960x600", "16:10 - 1024x640", "16:10 - 1080x675", "16:10 - 1152x720", "16:10 - 1200x750", "16:10 - 1280x800", "16:10 - 1360x850", "16:10 - 1440x900", "16:10 - 1536x960", "16:9 - 852x480", "16:9 - 960x540", "16:9 - 1024x576", "16:9 - 1152x648", "16:9 - 1200x675", "16:9 - 1280x720", "16:9 - 1360x765", "16:9 - 1440x810", "16:9 - 1536x864", "16:9 - 1600x900"} with prompt "Resize to:" without multiple selections allowed and empty selection allowed)
if choice is false then return
set tokens to split(the choice as string, " - ")
set width to item 1 of split(item 2 of tokens, "x") as integer
set height to item 2 of split(item 2 of tokens, "x") as integer
try
set bounds of front window of application currentApplication to {0, 0, width, height}
on error
tell application "System Events"
set theProcess to first process whose frontmost is true
tell theProcess
tell first window
set position to {0, 0}
set size to {width, height}
end tell
end tell
end tell
end try
end run
to split(input, delimiter)
set delimiters to AppleScript's text item delimiters
set AppleScript's text item delimiters to delimiter
set tokens to every text item of input
set AppleScript's text item delimiters to delimiters
return tokens
end split
+
+ BundleIdentifier
+ com.apple.Automator.RunScript
+ CFBundleVersion
+ 1.0.2
+ CanShowSelectedItemsWhenRun
+
+ CanShowWhenRun
+
+ Category
+
+ AMCategoryUtilities
+
+ Class Name
+ RunScriptAction
+ IgnoresInput
+
+ InputUUID
+ 5FED4A6A-3D79-45D7-81D7-48D31DFB07FE
+ Keywords
+
+ Run
+
+ OutputUUID
+ BE53845F-5000-4114-8083-DA413123FDA6
+ ShowWhenRun
+
+ UUID
+ 277EDC8A-7058-465D-971A-4AD74EB87732
+ UnlocalizedApplications
+
+ Automator
+
+ arguments
+
+ 0
+
+ default value
+ on run {input, parameters}
+
+ (* Your script goes here *)
+
+ return input
+end run
+ name
+ source
+ required
+ 0
+ type
+ 0
+ uuid
+ 0
+
+
+ isViewVisible
+
+ location
+ 349.000000:400.000000
+ nibPath
+ /System/Library/Automator/Run AppleScript.action/Contents/Resources/Base.lproj/main.nib
+
+ isViewVisible
+
+
+
+ connectors
+
+ workflowMetaData
+
+ applicationBundleIDsByPath
+
+ applicationPaths
+
+ inputTypeIdentifier
+ com.apple.Automator.nothing
+ outputTypeIdentifier
+ com.apple.Automator.nothing
+ presentationMode
+ 11
+ processesInput
+ 0
+ serviceInputTypeIdentifier
+ com.apple.Automator.nothing
+ serviceOutputTypeIdentifier
+ com.apple.Automator.nothing
+ serviceProcessesInput
+ 0
+ systemImageName
+ NSActionTemplate
+ useAutomaticInputType
+ 0
+ workflowTypeIdentifier
+ com.apple.Automator.servicesMenu
+
+
+
diff --git a/design/accessibility.png b/design/accessibility.png
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diff --git a/design/screenshot-2.png b/design/screenshot-2.png
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diff --git a/design/system-preferences.png b/design/system-preferences.png
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diff --git a/install.command b/install.command
new file mode 100755
index 0000000..6ddf4f0
--- /dev/null
+++ b/install.command
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+cd "`dirname "$0"`"
+
+rm -rf ~/Library/Services/Resize.workflow
+cp -R Resize.workflow ~/Library/Services
+rm -rf Resize.workflow
+rm -rf install.command
+
+echo 'Successfully installed Resizer'