Roblox asset ID
Every Roblox resource, whether it is an image, a sound, a 3D mesh or an avatar item, has a unique integer that identifies it in the catalog: the asset ID. That number is what Lua scripts use to load the resource at runtime, and its exact shape shifts depending on the kind of link you pulled it from.
The `catalog/` segment is recognized and the extracted ID belongs to the avatar item, not necessarily to the texture that makes it up.
This is the current format for models, decals and meshes; the ID comes flagged as a direct asset, ready for `rbxassetid://9876543`.
When the text already comes in the `rbxassetid://` protocol, the number is extracted without needing to recognize any URL segment.
It's the unique number that identifies each resource published on Roblox, an image, a sound, a mesh, a clothing item, a model. That number is what you use in properties like Image, SoundId and MeshId, usually written as rbxassetid://NUMBER. It is permanent: once published, the resource keeps the same ID.
The asset ID identifies the file itself (the image, the sound, the mesh). The product ID identifies that asset's sale listing in the marketplace, used by purchase functions like `MarketplaceService`. The two numbers are usually different even for the same catalog item.
The `library/` route was retired in December 2023 when Roblox consolidated asset links; today it redirects or errors out, even though the ID behind it is still valid inside `rbxassetid://`.
No. The Game Pass has its own ID (the one that shows up in `game-pass/{id}`), and the icon displayed on it is a separate image with its own `IconImageAssetId`, so pasting the pass ID into `Image` won't load the right icon.
Because `rbxassetid://{id}` is just a reference string: Studio does not check at assignment time whether that number corresponds to an image, sound or mesh file. The failure only shows up at runtime, as a resource that never loads.
This number is the ID of a catalog item (avatar clothing/accessory). Since February 2025 roblox.com/catalog only resolves for avatar items, and this ID does not correspond to a standalone image, sound or mesh, so the Image, Sound, Mesh and Decal snippets below are unlikely to work with it. To insert the item itself in-game, use InsertService or the catalog API.
1818rbxassetid://1818imageLabel.Image = "rbxassetid://1818"sound.SoundId = "rbxassetid://1818"meshPart.MeshId = "rbxassetid://1818"decal.Texture = "rbxassetid://1818"https://www.roblox.com/catalog/1818Extraction is done by text parsing in your browser; nothing is sent to any server and no request is made to Roblox.