Free game dev tools that run in your browser
8 free tools for the files a game is made of: characters, animation clips, terrain, textures and store art. Each one works in this browser tab, never uploads your files, and needs no account.
Your files stay on your device: every tool reads them in this browser tab.
Characters
FBX and GLB viewer
Open a model to see its skeleton, bone tree and animation clips, with vertex counts, textures and the real height in metres.
Opens FBX, GLB, glTF. Free, no account.
Mixamo to UE5 converter
Rename a Mixamo skeleton to the UE5 Manny bone names and add a root bone, with the clips carried over, as a GLB.
Opens FBX, GLB, glTF. Free, no account.
UE5 skeleton checker
Compare a rigged character with the UE5 Manny skeleton: missing bones, fingers, extra bones and the root.
Opens FBX, GLB, glTF. Free, no account.
Rig-ready checker
Check whether an unrigged character is ready to rig: size, compression, height, pose, facing and loose pieces.
Opens GLB, glTF. Free, no account.
Terrain
UE5 Landscape size calculator
Epic's recommended Landscape sizes for your world in km or metres, or a check of a heightmap resolution, with the section setup, components and the X, Y and Z scale.
Free, no account.
Heightmap viewer and converter
Open a 16-bit PNG, R16 or RAW heightmap in 3D, see its range and whether its size is valid in Unreal, and download a 16-bit PNG or R16, resampled if you like.
Opens PNG, R16, RAW. Free, no account.
Materials
Texture channel packer
Pack grayscale maps into one texture: Unreal ORM, a Unity mask map, or a normal map with its green channel flipped.
Opens PNG, JPEG, WebP. Free, no account.
Steam page
Steam capsule checker
Preview one image at every Steam capsule size, with the crop, the target pixels and upscaling warnings.
Opens PNG, JPEG, WebP. Free, no account.