Convert GLB to glTF in your browser

GLB is a documented container: a JSON chunk plus an optional binary buffer. Unpacking it back to readable .gltf is lossless, and it happens entirely in your tab — the binary buffer is embedded as a data URI so the .gltf file stands on its own.

L'outil et les libellés sont en français. Les notes de référence ci-dessous restent en anglais.

GLBglTF converter

Runs entirely in this browser tab. Your file is never uploaded and nothing is stored.

Déposez votre fichier GLB ici, ou cliquez pour le choisir

or — no sign-up required

Besoin d'un spécialiste CAD/BIM certifié pour modifier ce fichier ?

TaskBider drafters, detailers and BIM coordinators work remotely and every listing shows the pay. Typical published range for this work: $18–$45/hr.

Étape par étape

  1. 1Drop the .glb file above.
  2. 2Download the .gltf — it is formatted JSON you can open in any text editor to inspect nodes, meshes, materials and extensions.
  3. 3Edit material names, node names or extension settings directly if that is why you unpacked it.
  4. 4Re-pack to GLB in your authoring tool or with the glTF-Transform CLI when you are done.

Points de vigilance

  • The geometry buffer is embedded as base64, which makes the .gltf roughly a third larger than the original GLB. That is expected for a self-contained file.
  • Nothing is re-encoded: meshes, textures, animations and extensions are carried across byte for byte.
  • Draco or Meshopt compressed buffers stay compressed, so the viewer still needs those extensions.
GLBBinary glTF

glTF packed into a single binary container. Documented, so unpacking it back to .gltf is lossless and can be done in the browser.

glTFglTF 2.0

The Khronos open runtime 3D format — JSON plus buffers. The web and game-engine standard for delivering models.

Questions fréquentes des dessinateurs

Why unpack GLB at all?

To read or edit the scene graph by hand — fixing material names, stripping a node, or checking which extensions a supplier's asset depends on.

Is any quality lost?

None. The JSON is reformatted and the buffer re-encoded as base64; the actual data is identical.

Paid to draft, model or coordinate?

TaskBider lists remote CAD and BIM roles with the pay shown on every listing.