diff --git a/src/Puppeteer.Keyboard.purs b/src/Puppeteer.Keyboard.purs
index 89e588c..0ccc3fc 100644
--- a/src/Puppeteer.Keyboard.purs
+++ b/src/Puppeteer.Keyboard.purs
@@ -1,11 +1,16 @@
-module Puppeteer.Keyboard (module X, KeyMod(..), Key(..), prepareKey, up, down, doType, press) where
+module Puppeteer.Keyboard (module X, KeyMod(..), Key(..), prepareKey, keyModToString, keyModFromString, keyToString, keyFromString, up, down, doType, press) where
 
 import Prelude
 
 import Control.Promise (Promise)
 import Control.Promise as Promise
+import Data.Bounded.Generic (genericBottom, genericTop)
+import Data.Enum (class BoundedEnum, class Enum, upFrom)
+import Data.Enum.Generic (genericCardinality, genericFromEnum, genericPred, genericSucc, genericToEnum)
 import Data.Eq.Generic (genericEq)
+import Data.Foldable (find)
 import Data.Generic.Rep (class Generic)
+import Data.Maybe (Maybe)
 import Data.Nullable (Nullable)
 import Data.Nullable as Nullable
 import Data.Ord.Generic (genericCompare)
@@ -55,11 +60,25 @@ data KeyMod
   | KeyModControl
   | KeyModAlt
 
-derive instance genericKeyMod :: Generic KeyMod _
-instance ordKeyMod :: Ord KeyMod where
+derive instance Generic KeyMod _
+
+instance Enum KeyMod where
+  pred = genericPred
+  succ = genericSucc
+
+instance Bounded KeyMod where
+  top = genericTop
+  bottom = genericBottom
+
+instance BoundedEnum KeyMod where
+  cardinality = genericCardinality
+  toEnum = genericToEnum
+  fromEnum = genericFromEnum
+
+instance Ord KeyMod where
   compare = genericCompare
 
-instance eqKeyMod :: Eq KeyMod where
+instance Eq KeyMod where
   eq = genericEq
 
 data Key
@@ -164,128 +183,148 @@ data Key
   | KeyNumpad9
   | KeyNumpadDecimal
 
-derive instance genericKey :: Generic Key _
-instance ordKey :: Ord Key where
+derive instance Generic Key _
+
+instance Enum Key where
+  pred = genericPred
+  succ = genericSucc
+
+instance Bounded Key where
+  top = genericTop
+  bottom = genericBottom
+
+instance BoundedEnum Key where
+  cardinality = genericCardinality
+  toEnum = genericToEnum
+  fromEnum = genericFromEnum
+
+instance Ord Key where
   compare = genericCompare
 
-instance eqKey :: Eq Key where
+instance Eq Key where
   eq = genericEq
 
 prepareKey :: Key -> Foreign
-prepareKey = writeImpl <<< prepareKey_
+prepareKey = writeImpl <<< keyToString
 
-prepareKeyMod_ :: KeyMod -> String
-prepareKeyMod_ KeyModMetaLeft = "MetaLeft"
-prepareKeyMod_ KeyModMetaRight = "MetaRight"
-prepareKeyMod_ KeyModMeta = "Meta"
-prepareKeyMod_ KeyModShiftLeft = "ShiftLeft"
-prepareKeyMod_ KeyModShiftRight = "ShiftRight"
-prepareKeyMod_ KeyModControlLeft = "ControlLeft"
-prepareKeyMod_ KeyModControlRight = "ControlRight"
-prepareKeyMod_ KeyModAltLeft = "AltLeft"
-prepareKeyMod_ KeyModAltRight = "AltRight"
-prepareKeyMod_ KeyModShift = "Shift"
-prepareKeyMod_ KeyModControl = "Control"
-prepareKeyMod_ KeyModAlt = "Alt"
+keyModFromString :: String -> Maybe KeyMod
+keyModFromString s = find (eq s <<< keyModToString) (upFrom bottom :: Array KeyMod)
 
-prepareKey_ :: Key -> String
-prepareKey_ (KeyChar c) = String.fromCodePointArray [ CodePoint.codePointFromChar c ]
-prepareKey_ (KeyMod mod) = prepareKeyMod_ mod
-prepareKey_ KeyPower = "Power"
-prepareKey_ KeyEject = "Eject"
-prepareKey_ KeyAbort = "Abort"
-prepareKey_ KeyHelp = "Help"
-prepareKey_ KeyBackspace = "Backspace"
-prepareKey_ KeyTab = "Tab"
-prepareKey_ KeyEnter = "Enter"
-prepareKey_ KeyCarriageReturn = "CarriageReturn"
-prepareKey_ KeyNewline = "Newline"
-prepareKey_ KeyPause = "Pause"
-prepareKey_ KeyCapsLock = "CapsLock"
-prepareKey_ KeyEscape = "Escape"
-prepareKey_ KeyConvert = "Convert"
-prepareKey_ KeyNonConvert = "NonConvert"
-prepareKey_ KeySpace = "Space"
-prepareKey_ KeyPageUp = "PageUp"
-prepareKey_ KeyPageDown = "PageDown"
-prepareKey_ KeyEnd = "End"
-prepareKey_ KeyHome = "Home"
-prepareKey_ KeyArrowLeft = "ArrowLeft"
-prepareKey_ KeyArrowUp = "ArrowUp"
-prepareKey_ KeyArrowRight = "ArrowRight"
-prepareKey_ KeyArrowDown = "ArrowDown"
-prepareKey_ KeySelect = "Select"
-prepareKey_ KeyOpen = "Open"
-prepareKey_ KeyPrintScreen = "PrintScreen"
-prepareKey_ KeyInsert = "Insert"
-prepareKey_ KeyDelete = "Delete"
-prepareKey_ KeyContextMenu = "ContextMenu"
-prepareKey_ KeyF1 = "F1"
-prepareKey_ KeyF2 = "F2"
-prepareKey_ KeyF3 = "F3"
-prepareKey_ KeyF4 = "F4"
-prepareKey_ KeyF5 = "F5"
-prepareKey_ KeyF6 = "F6"
-prepareKey_ KeyF7 = "F7"
-prepareKey_ KeyF8 = "F8"
-prepareKey_ KeyF9 = "F9"
-prepareKey_ KeyF10 = "F10"
-prepareKey_ KeyF11 = "F11"
-prepareKey_ KeyF12 = "F12"
-prepareKey_ KeyF13 = "F13"
-prepareKey_ KeyF14 = "F14"
-prepareKey_ KeyF15 = "F15"
-prepareKey_ KeyF16 = "F16"
-prepareKey_ KeyF17 = "F17"
-prepareKey_ KeyF18 = "F18"
-prepareKey_ KeyF19 = "F19"
-prepareKey_ KeyF20 = "F20"
-prepareKey_ KeyF21 = "F21"
-prepareKey_ KeyF22 = "F22"
-prepareKey_ KeyF23 = "F23"
-prepareKey_ KeyF24 = "F24"
-prepareKey_ KeyNumLock = "NumLock"
-prepareKey_ KeyScrollLock = "ScrollLock"
-prepareKey_ KeyAudioVolumeMute = "AudioVolumeMute"
-prepareKey_ KeyAudioVolumeDown = "AudioVolumeDown"
-prepareKey_ KeyAudioVolumeUp = "AudioVolumeUp"
-prepareKey_ KeyMediaTrackNext = "MediaTrackNext"
-prepareKey_ KeyMediaTrackPrevious = "MediaTrackPrevious"
-prepareKey_ KeyMediaStop = "MediaStop"
-prepareKey_ KeyMediaPlayPause = "MediaPlayPause"
-prepareKey_ KeyAltGraph = "AltGraph"
-prepareKey_ KeyProps = "Props"
-prepareKey_ KeyCancel = "Cancel"
-prepareKey_ KeyClear = "Clear"
-prepareKey_ KeyAccept = "Accept"
-prepareKey_ KeyModeChange = "ModeChange"
-prepareKey_ KeyAttn = "Attn"
-prepareKey_ KeyCrSel = "CrSel"
-prepareKey_ KeyExSel = "ExSel"
-prepareKey_ KeyEraseEof = "EraseEof"
-prepareKey_ KeyPlay = "Play"
-prepareKey_ KeyZoomOut = "ZoomOut"
-prepareKey_ KeySoftLeft = "SoftLeft"
-prepareKey_ KeySoftRight = "SoftRight"
-prepareKey_ KeyCamera = "Camera"
-prepareKey_ KeyCall = "Call"
-prepareKey_ KeyEndCall = "EndCall"
-prepareKey_ KeyVolumeDown = "VolumeDown"
-prepareKey_ KeyVolumeUp = "VolumeUp"
-prepareKey_ KeyNumpadEnter = "NumpadEnter"
-prepareKey_ KeyNumpadMultiply = "NumpadMultiply"
-prepareKey_ KeyNumpadAdd = "NumpadAdd"
-prepareKey_ KeyNumpadSubtract = "NumpadSubtract"
-prepareKey_ KeyNumpadDivide = "NumpadDivide"
-prepareKey_ KeyNumpadEqual = "NumpadEqual"
-prepareKey_ KeyNumpad0 = "Numpad0"
-prepareKey_ KeyNumpad1 = "Numpad1"
-prepareKey_ KeyNumpad2 = "Numpad2"
-prepareKey_ KeyNumpad3 = "Numpad3"
-prepareKey_ KeyNumpad4 = "Numpad4"
-prepareKey_ KeyNumpad5 = "Numpad5"
-prepareKey_ KeyNumpad6 = "Numpad6"
-prepareKey_ KeyNumpad7 = "Numpad7"
-prepareKey_ KeyNumpad8 = "Numpad8"
-prepareKey_ KeyNumpad9 = "Numpad9"
-prepareKey_ KeyNumpadDecimal = "NumpadDecimal"
+keyFromString :: String -> Maybe Key
+keyFromString s = find (eq s <<< keyToString) (upFrom bottom :: Array Key)
+
+keyModToString :: KeyMod -> String
+keyModToString KeyModMetaLeft = "MetaLeft"
+keyModToString KeyModMetaRight = "MetaRight"
+keyModToString KeyModMeta = "Meta"
+keyModToString KeyModShiftLeft = "ShiftLeft"
+keyModToString KeyModShiftRight = "ShiftRight"
+keyModToString KeyModControlLeft = "ControlLeft"
+keyModToString KeyModControlRight = "ControlRight"
+keyModToString KeyModAltLeft = "AltLeft"
+keyModToString KeyModAltRight = "AltRight"
+keyModToString KeyModShift = "Shift"
+keyModToString KeyModControl = "Control"
+keyModToString KeyModAlt = "Alt"
+
+keyToString :: Key -> String
+keyToString (KeyChar c) = String.fromCodePointArray [ CodePoint.codePointFromChar c ]
+keyToString (KeyMod mod) = keyModToString mod
+keyToString KeyPower = "Power"
+keyToString KeyEject = "Eject"
+keyToString KeyAbort = "Abort"
+keyToString KeyHelp = "Help"
+keyToString KeyBackspace = "Backspace"
+keyToString KeyTab = "Tab"
+keyToString KeyEnter = "Enter"
+keyToString KeyCarriageReturn = "CarriageReturn"
+keyToString KeyNewline = "Newline"
+keyToString KeyPause = "Pause"
+keyToString KeyCapsLock = "CapsLock"
+keyToString KeyEscape = "Escape"
+keyToString KeyConvert = "Convert"
+keyToString KeyNonConvert = "NonConvert"
+keyToString KeySpace = "Space"
+keyToString KeyPageUp = "PageUp"
+keyToString KeyPageDown = "PageDown"
+keyToString KeyEnd = "End"
+keyToString KeyHome = "Home"
+keyToString KeyArrowLeft = "ArrowLeft"
+keyToString KeyArrowUp = "ArrowUp"
+keyToString KeyArrowRight = "ArrowRight"
+keyToString KeyArrowDown = "ArrowDown"
+keyToString KeySelect = "Select"
+keyToString KeyOpen = "Open"
+keyToString KeyPrintScreen = "PrintScreen"
+keyToString KeyInsert = "Insert"
+keyToString KeyDelete = "Delete"
+keyToString KeyContextMenu = "ContextMenu"
+keyToString KeyF1 = "F1"
+keyToString KeyF2 = "F2"
+keyToString KeyF3 = "F3"
+keyToString KeyF4 = "F4"
+keyToString KeyF5 = "F5"
+keyToString KeyF6 = "F6"
+keyToString KeyF7 = "F7"
+keyToString KeyF8 = "F8"
+keyToString KeyF9 = "F9"
+keyToString KeyF10 = "F10"
+keyToString KeyF11 = "F11"
+keyToString KeyF12 = "F12"
+keyToString KeyF13 = "F13"
+keyToString KeyF14 = "F14"
+keyToString KeyF15 = "F15"
+keyToString KeyF16 = "F16"
+keyToString KeyF17 = "F17"
+keyToString KeyF18 = "F18"
+keyToString KeyF19 = "F19"
+keyToString KeyF20 = "F20"
+keyToString KeyF21 = "F21"
+keyToString KeyF22 = "F22"
+keyToString KeyF23 = "F23"
+keyToString KeyF24 = "F24"
+keyToString KeyNumLock = "NumLock"
+keyToString KeyScrollLock = "ScrollLock"
+keyToString KeyAudioVolumeMute = "AudioVolumeMute"
+keyToString KeyAudioVolumeDown = "AudioVolumeDown"
+keyToString KeyAudioVolumeUp = "AudioVolumeUp"
+keyToString KeyMediaTrackNext = "MediaTrackNext"
+keyToString KeyMediaTrackPrevious = "MediaTrackPrevious"
+keyToString KeyMediaStop = "MediaStop"
+keyToString KeyMediaPlayPause = "MediaPlayPause"
+keyToString KeyAltGraph = "AltGraph"
+keyToString KeyProps = "Props"
+keyToString KeyCancel = "Cancel"
+keyToString KeyClear = "Clear"
+keyToString KeyAccept = "Accept"
+keyToString KeyModeChange = "ModeChange"
+keyToString KeyAttn = "Attn"
+keyToString KeyCrSel = "CrSel"
+keyToString KeyExSel = "ExSel"
+keyToString KeyEraseEof = "EraseEof"
+keyToString KeyPlay = "Play"
+keyToString KeyZoomOut = "ZoomOut"
+keyToString KeySoftLeft = "SoftLeft"
+keyToString KeySoftRight = "SoftRight"
+keyToString KeyCamera = "Camera"
+keyToString KeyCall = "Call"
+keyToString KeyEndCall = "EndCall"
+keyToString KeyVolumeDown = "VolumeDown"
+keyToString KeyVolumeUp = "VolumeUp"
+keyToString KeyNumpadEnter = "NumpadEnter"
+keyToString KeyNumpadMultiply = "NumpadMultiply"
+keyToString KeyNumpadAdd = "NumpadAdd"
+keyToString KeyNumpadSubtract = "NumpadSubtract"
+keyToString KeyNumpadDivide = "NumpadDivide"
+keyToString KeyNumpadEqual = "NumpadEqual"
+keyToString KeyNumpad0 = "Numpad0"
+keyToString KeyNumpad1 = "Numpad1"
+keyToString KeyNumpad2 = "Numpad2"
+keyToString KeyNumpad3 = "Numpad3"
+keyToString KeyNumpad4 = "Numpad4"
+keyToString KeyNumpad5 = "Numpad5"
+keyToString KeyNumpad6 = "Numpad6"
+keyToString KeyNumpad7 = "Numpad7"
+keyToString KeyNumpad8 = "Numpad8"
+keyToString KeyNumpad9 = "Numpad9"
+keyToString KeyNumpadDecimal = "NumpadDecimal"