Options.txt

options.txt is the file that stores all the options changeable in the in-game options menu and various other information the game needs to store after quitting. It is found in the .minecraft folder and can be edited with any basic text editor to change your options. Most settings can be changed in-game, but a few can only be changed by editing this file.

Options

Each line represents a single option or piece of data, with the option followed by a colon followed by the value of that option.

Option Name	Meaning and Range of Values	Default Value
invertYMouse	Whether mouse is inverted or not (true/false)	false
mouseSensitivity	How much a mouse movement changes the position of the camera (0-1)	0.5
fov	How large the field of view is (0-1)	0.0
gamma	Brightness (0-1)	0.0
saturation	No in-game control	0.0
renderDistance	The render distance in the chunk radius from the player (2-16 without external editing of options.txt)	8
guiScale	Size of interfaces (0-3: 'Auto', 'Small', 'Normal', 'Large')	0 (Auto)
particles	Amount of particles (such as rain, potion effects, etc.) (0-2: 'All', 'Decreased', 'Minimal')	0 (All)
bobView	Whether or not the camera bobs up and down as the player walks (true/false)	true
anaglyph3d	Whether 3D mode is turned on (true/false)	false
maxFps	The maximum framerate	120
fboEnable	Whether Framebuffer Objects is turned on (true/false)	true
difficulty	Game difficulty (0-3: Peaceful, Easy, Normal, Hard)	2 (Normal)
fancyGraphics	Whether fancy (more detailed) graphics are turned on (true/false)	true
ao	Smooth lighting (0-2: Off, Minimum, Maximum)	2 (Maximum)
renderClouds	Whether to display clouds (true/false)	true
resourcePacks	A list of the selected resource packs, with the pack's name in quotes (string); empty if only default pack is loaded	[]
lastServer	Address of last server used with Direct Connect (string)
lang	Language to be used (string)	en_US
chatVisibility	What is seen in chat (0-2: 'Shown', 'Commands only', 'Hidden')	0 (Shown)
chatColors	Whether colored chat is allowed (true/false)	true
chatLinks	Whether links show as links or just text in the chat (true/false [links/plaintext])	true
chatLinksPrompt	Whether clicking on links in chat will need confirmation before opening them (true/false)	true
chatOpacity	Opacity of the chat (0-1)	1.0
snooperEnabled	Whether snooper functionality is turned on (true/false)	true
fullscreen	Whether the game will attempt to go fullscreen at startup (true/false)	false
enableVsync	Whether v-sync (vertical synchronization) is enabled (true/false)	true
useVbo	Whether Vertex Buffer Objects is turned on (true/false)	false
hideServerAddress	Whether server addresses are hidden by default; toggled by F1 when in Multiplayer menu (true/false)	false
advancedItemTooltips	Whether mousing over items in the inventory shows its ID and durability (true/false); toggled by F3+H	false
pauseOnLostFocus	Whether switching out of Minecraft without pressing Esc or opening an in-game interface automatically pauses the game (true/false); toggled by F3 + P	true
touchscreen	Whether touchscreen controls are used (true/false)	false
overrideWidth	Width to open Minecraft up with in pixels (0 means default to Minecraft's settings); no in-game control	0
overrideHeight	Height to open Minecraft up with in pixels (0 means default to Minecraft's settings); no in-game control	0
heldItemTooltips	Whether switching between items shows the name of the item (true/false); no in-game control	true
chatHeightFocused	When you press the chat button, how tall the chat span is (0-1)	1.0
chatHeightUnfocused	How tall the maximum chat span is, when the chat button is not pressed (0-1)	0.44366196
chatScale	The scale/size of the text in the chat (0-1)	1.0
chatWidth	The span width of the chat (0-1)	1.0
showInventoryAchievementHint	Whether the "Press 'E' to open your inventory" text will be shown in the upper right corner of the screen upon initially spawning (true/false); no in-game control	false
mipmapLevels	Amount by which distant textures are smoothed	4
anisotropicFiltering		1
forceUnicodeFont	Whether Unicode font should be used (true/false)	false
allowBlockAlternatives	Whether alternative block models will be used (true/false)	true
reducedDebugInfo	Whether the information shown on the Debug screen will be reduced (true/false)	false
Streaming
streamBytesPerPixel		0.5
streamMicVolume		1.0
streamSystemVolume		1.0
streamKbps		0.5412844
streamFps		0.31690142
streamCompression		1
streamSendMetadata	(true/false)	true
streamPreferredServer
streamChatEnabled		0
streamChatUserFilter		0
streamMicToggleBehavior		0
Controls
key_key.attack	Attack control	-100 (left mouse)
key_key.use	Use Item control	-99 (right mouse)
key_key.forward	Forward control	17 (W)
key_key.left	Left control	30 (A)
key_key.back	Back control	31 (S)
key_key.right	Right control	32 (D)
key_key.jump	Jump control	57 (space bar)
key_key.sneak	Sneak control	42 (left shift)
key_key.drop	Drop control	16 (Q)
key_key.inventory	Inventory control	18 (E)
key_key.chat	Chat control	20 (T)
key_key.playerlist	List Players control	15 (tab)
key_key.pickItem	Pick Block control	-98 (middle mouse)
key_key.command	Command control	53 (forward slash)
key_key.screenshot	Screenshot control	60 (F2)
key_key.togglePerspective	Perspective control	63 (F5)
key_key.smoothCamera	Mouse Smoothing control	0 (none)
key_key.sprint	Sprint control	29 (left control)
key_key.streamStartStop	Start/Stop Stream control	64 (F6)
key_key.streamPauseUnpause	Pause/Unpause Stream control	65 (F7)
key_key.streamCommercial	Stream Commercial control	0 (none)
key_key.streamToggleMic	Microphone input control	0 (none)
key_key.fullscreen	Fullscreen control	87 (F11)
key_key.spectatorOutlines	Visibility of player outlines in Spectator Mode control	0 (none)
key_key.hotbar.1	Hotbar Slot 1 control	2 (1)
key_key.hotbar.2	Hotbar Slot 2 control	3 (2)
key_key.hotbar.3	Hotbar Slot 3 control	4 (3)
key_key.hotbar.4	Hotbar Slot 4 control	5 (4)
key_key.hotbar.5	Hotbar Slot 5 control	6 (5)
key_key.hotbar.6	Hotbar Slot 6 control	7 (6)
key_key.hotbar.7	Hotbar Slot 7 control	8 (7)
key_key.hotbar.8	Hotbar Slot 8 control	9 (8)
key_key.hotbar.9	Hotbar Slot 9 control	10 (9)
Music and Sound
soundCategory_master	The volume of all sounds (0-1)	1.0
soundCategory_music	The volume of gameplay music (0-1)	1.0
soundCategory_record	The volume of music/sounds from Jukeboxes and Note Blocks (0-1)	1.0
soundCategory_weather	The volume of rain and thunder (0-1)	1.0
soundCategory_block	The volume of blocks (0-1)	1.0
soundCategory_hostile	The volume of hostile and neutral mobs (0-1)	1.0
soundCategory_neutral	The volume of passive mobs (0-1)	1.0
soundCategory_player	The volume of players (0-1)	1.0
soundCategory_ambient	The volume of cave sounds and fireworks (0-1)	1.0
Skin Customization
modelPart_cape	Whether your cape is shown (true/false)	true
modelPart_jacket	Whether the "Jacket" layer of your skin is shown (true/false)	true
modelPart_left_sleeve	Whether the "Left Sleeve" layer of your skin is shown (true/false)	true
modelPart_right_sleeve	Whether the "Right Sleeve" layer of your skin is shown (true/false)	true
modelPart_left_pants_leg	Whether the "Left Pants Leg" layer of your skin is shown (true/false)	true
modelPart_right_pants_leg	Whether the "Right Pants Leg" layer of your skin is shown (true/false)	true
modelPart_hat	Whether the "Hat" layer of your skin is shown (true/false)	true

A list of all available key/button numbers is available at key codes.