Troubleshooting model conversion

The model has no textures

1. Open the source in Blender. If textures are already missing, locate the original images: changing format cannot recover lost files.
2. For OBJ, keep the MTL and images; for GLTF, keep the linked BIN and textures. Do not change folder structure without updating paths.
3. Enable Textures in export settings and select a search folder if needed. Check that the located images actually belong to the model.
4. Check the output format in the compatibility table. STL, PLY and ABC do not transfer standard image-to-material links. Procedural materials may need baking in Blender.
5. Export one model again into a new folder and open it in the target application. Keep the complete export folder when moving it.

Blender cannot be found

1. Install Blender for Windows and launch it independently. Fast Converter uses external Blender, so installing the converter alone is not enough.
2. In the Blender field, select the folder containing blender.exe. Do not select the installer, archive or model folder. For the ZIP version of Blender, extract it completely first.
3. If Blender was updated or moved, select its new folder again. Make sure your account can access the executable and that it was not deleted or quarantined.
4. Test with a simple model. If Blender starts but one format fails, the importer or its version may be the cause: keep the exact error message for support.

Incorrect scale or orientation

1. Compare actual object dimensions, not only its on-screen size: camera angle and zoom can be misleading.
2. Check source scene units and the destination program’s import settings. Meters, centimeters and millimeters may be interpreted differently; check STL especially carefully.
3. Open the source in Blender and inspect Dimensions, Scale and axis orientation. Edit a copy. Do not blindly apply transforms to characters: this can affect rigs and animation.
4. Export one model and import it using matching units. Get that result right before processing the full batch.

If the issue persists

Include the Fast Converter and Blender versions, input and output formats, export settings and exact error text when contacting support. Attach a screenshot; share the model only if you have the right to do so. Do not send passwords or payment details.