Inspect AI model files online: Safetensors, GGUF & ComfyUI

AI model files are huge — gigabytes of tensor weights. But the part you usually want to inspect is tiny: the header. Yellorn reads only that header, locally in your browser, and never loads the tensor data. So you can check a model's architecture or a workflow's prompt in seconds, without downloading the whole file into the editor.

Drag the file onto the editor to open it.

• Safetensors (.safetensors) — the tensor map (each tensor's name, dtype, and shape) plus a computed __summary__. The raw weights are never read.
• GGUF (.gguf) — a computed __summary__ (architecture, parameter count, quantization mix, key hyperparameters), the file's full metadata key/value map, and the tensor list.
• ComfyUI PNG — the workflow embedded in a generated image: a __summary__ (checkpoint, LoRAs, sampler, size, positive / negative prompts), the API prompt graph, and the UI workflow. The pixels are never decoded.

• Compare two checkpoints — open each model's header in a tab and diff the summaries.
• Recover a ComfyUI workflow from a PNG someone shared — the API prompt is ready to POST straight to ComfyUI's /prompt endpoint.
• Convert the header to JSON for an editable tab, or search it with JMESPath.

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