GroundCheck
by jfd-jgd
GroundCheck warns a player before breaking a block they are standing on would leave them without solid footing, a client-side Fabric mod for Minecraft 1.19.2 – 1.20.5.
What it does
Vanilla player hitboxes are 0.6 blocks wide, so standing near the edge of a block can leave a player unsupported once the block under them is removed. GroundCheck checks the ground beneath the targeted block after it breaks and shows a warning when the player would be left hanging, even while sneaking. Only the client needs the mod, and it adds no server traffic or extra mechanics.
The check applies in Survival and Adventure modes and ignores Creative flight. Unsafe blocks are highlighted with a red outline, and the colour, the check distance and the warning toggle can all be changed in the configuration. The mod supports the game's language setting and is lightweight, with minimal performance impact. It works alongside Sodium, Embeddium and other rendering tweaks.
Key features
Break warning
Shows a warning when breaking the targeted block would leave the player standing on nothing.
Red outline on unsafe blocks
Highlights the blocks that would cause a fall, so they can be seen before they are broken.
Two-block detection
Detects when the player is standing across two blocks, so breaking only one of them still triggers the warning.
Adjustable settings
The outline colour, the check distance and the warning can be configured to suit the player.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Building over voids
Players placing or removing blocks along a ledge can see which edges would drop them.
Parkour and exploration
Players moving across narrow paths can check the ground before breaking a block underfoot.
Who it’s for: Players who want a visual check against accidental falls while mining or building in Survival or Adventure mode, with the mod installed on the client only.
Questions
Does GroundCheck need Fabric API?
Does the server need GroundCheck installed?
Does GroundCheck work in Creative mode?
More from jfd-jgd
What the author says
GroundCheck is a simple client-side mod that warns you when you're about to break the block you're standing on - preventing accidental falls. In vanilla Minecraft, your hitbox is 0.6 blocks wide, while a full block is 1*1. If you stand exactly in the centre of a block and break it, you'll have nothing to stand on …
Official listing
- Modrinth page
- modrinth.com/mod/groundcheck
- Owner
- jfd-jgd
- Published
- 2026-08-28
- Updated on Modrinth
- 2026-08-29
- Facts verified
- 2026-10-15