The mod's main rendering toggle key is by default H.
The in-game config menu hotkey is by default H + C.

Recent MiniHUD versions that use malilib

For the more recent versions of MiniHUD that use malilib, all the hotkeys are in MiniHUD's own in-game config menu, which by default opens with H + C.

Old Forge versions of MiniHUD

For the old Forge versions of the mod, the keybinds can be changed in the vanilla Controls menu.

For the old Forge versions:

• Toggle Mode key (by itself): Toggle the HUD state ON/OFF.
• Toggle Mode key + "info key": Toggle ON/OFF the different pieces of information (the keys can be set in the mod configs).

NOTE: The information below this is outdated and doesn't include everything that is in the recent LiteLoader, Rift and Fabric versions of the mod.
Look through the in-game config menu to see everything that is available in addition to the things mentioned below.

The following information is currently available:

• Real time (ie. a clock...)
• World time in ticks
• World time formatted to days, hours, minutes
• Player's current block position
• Player's current position in chunk
• Player's coordinates
• Player's current dimension ID
• Player's yaw rotation
• Player's pitch rotation
• Player's current moving speed
• Player's facing
• The Chunk the player is currently in
• The region file the player is currently in
• Looked-at-entity's name and health
• Looked-at-entity's registry name (1.11+) or ID (1.10.2)
• The block the player is looking at
• Block's registry name and the BlockState properties of the looked-at-block (like on the F3 screen)
• Current light level
• Current biome
• Current biome's registry name.
• Current FPS
• Entity count
• C value (rendered chunk sections) from F3
• P value (number of particles) from F3
• Current local difficulty number (from F3)
• Is the current chunk a slime chunk. Note: in multiplayer you need to manually run the /seed command!

Starting from version 0.13.0, there is now a region file boundary overlay renderer. The default hotkey to toggle it ON/OFF is Toggle (H) + J.

Note: Starting from version 0.9.0, you can change all these quick toggle keys via the config file or the in-game config menu.
Note: Starting from version 0.11.0, you can change the order of these info lines via the config file or the in-game config menu.

To temporarily (= not saved in the configs) toggle the info types while in-game, do this:

• In version 0.9.0 or later, press and hold the main Toggle key, and then press the configured hotkey for the info type you want to toggle
• Before version 0.9.0, first press and hold the indicated info type key and then press the Toggle key

Old Configuration options

Below are the bit mask values for the different information types. This is now redundant, just use the on/off options in the in-game config menu instead!
These were removed entirely in version 0.11.0.

There are a few things that can be adjusted either via the in-game configuration menu or in the configuration file.

• The information to be displayed on the Info Lines HUD
• Font scale factor
• The font and backgrond colors
• Whether to use a font shadow in the text rendering
• Whether to use a background color for the text
• Whether to sort the displayed information lines by their length
• Whether to reverse the above mentioned sorting order
• Whether to use a custom format string for the coordinate line, and the format string to use
• Multiple options to configure the Light Level overlay
• The colors of all the overlay renderers

Note: The custom format string for the coordinates has to have three float number format specifiers.
An example of that would be "X: %.1f Y: %.1f Z: %.1f" (without the quotes) to give an output like: X: 1234.2 Y: 64.0 Z: 4321.7.

Starting from mod version 0.12.0, there are hotkeys to toggle ON/OFF the debug renderers that exist in vanilla, but are normally not usable/accessible. The hotkeys for these can be set in the Hotkeys config category. Note: The neighbor updates debug renderer only works in single player.
Note: The pathfinding debug renderer also only works in single player, unless another mod sends the appropriate custom payload vanilla packet from the server, to add the path data to the debug renderer. Currently I'm not aware of any such mods however.

Some example screenshots of the debug renderers: Collision boxes:

Height map:

Neighbor updates:

Pathfinding:

Solid block faces:

Water: