Vanilla Keys
Rebind or switch off the keys Minecraft hardcodes — F1 Hide GUI, F3 Debug, F5 Perspective and the F3 combinations. These are not in Controls and vanilla gives you no way to change them. Set a row to a different key to move it; press ESC while binding to switch it off entirely.
WhereMods › Client
KindFeature
Versions1.8.9 only

Turning it on
- Sour Client menu, Client topic (or search for it from All).
- Flip the switch on its row. Click the row itself to open its settings beside the list.
- It has keys: Hide GUI (F1), Debug Screen (F3), Cycle Shader (F4), Perspective (F5), F3 + A — Reload Chunks (A), F3 + B — Hitboxes (B), F3 + D — Clear Chat (D), F3 + F — Render Distance (F), F3 + H — Advanced Tooltips (H), F3 + P — Pause On Lost Focus (P), F3 + T — Reload Resources (T), Screenshot (F2). Change them in this mod's settings or under Settings › Keybinds.
Every setting
In the order the game shows them. Indented rows only appear once the row above is set the way it says.
Keys12 settings
| Hide GUI | F1 — hides the whole HUD and hand. The single most-pressed-by-accident key in the game. Clear it with ESC to switch the function off. | F1 |
| Debug Screen | F3 — the debug overlay. Turning this off does NOT disable the F3 combinations below; they read the F3 key directly. Clear it with ESC to switch the function off. | F3 |
| Cycle Shader | F4 — steps through the built-in super-secret-settings shaders. Clear it with ESC to switch the function off. | F4 |
| Perspective | F5 — third person. Fires in one keypress and takes a second to undo. Clear it with ESC to switch the function off. | F5 |
| F3 + A — Reload Chunks | Rebuilds every chunk. Seconds of stutter if it lands mid-fight. Rebinding moves the second key; F3 is still held. Clear it with ESC to switch the function off. | A |
| F3 + B — Hitboxes | Draws entity hitboxes. Rebinding moves the second key; F3 is still held. Clear it with ESC to switch the function off. | B |
| F3 + D — Clear Chat | Wipes the chat history with no confirmation. Rebinding moves the second key; F3 is still held. Clear it with ESC to switch the function off. | D |
| F3 + F — Render Distance | Steps render distance up, or down with Shift. Rebinding moves the second key; F3 is still held. Clear it with ESC to switch the function off. | F |
| F3 + H — Advanced Tooltips | Adds item ids and durability to tooltips. Rebinding moves the second key; F3 is still held. Clear it with ESC to switch the function off. | H |
| F3 + P — Pause On Lost Focus | Toggles whether alt-tabbing pauses a singleplayer world. Rebinding moves the second key; F3 is still held. Clear it with ESC to switch the function off. | P |
| F3 + T — Reload Resources | Reloads every resource pack. A full freeze, not a stutter. Rebinding moves the second key; F3 is still held. Clear it with ESC to switch the function off. | T |
| Screenshot | Takes a screenshot (vanilla F2). Clear it with ESC to switch the key off. | F2 |