Getting Started
Why AI tools download a model once
What the first-run download is, where models are stored, why big ones ask permission, and how to keep them on your device or clear them.
Every AI feature on this site runs on your device — that is the whole privacy promise. There is no server doing the work, which means your browser needs the actual neural network weights. The first time you use an AI tool, it downloads its model; after that, the model loads from local cache and the tool starts instantly, even offline.
What downloads, roughly
| Tool | First-run download |
|---|---|
| Background remover (Fast) | ~45 MB |
| Background remover (Best Quality) | ~99–192 MB depending on device path |
| Video Background Remover (People) | ~15 MB |
| Image Upscaler | ~65 MB per model path |
| Object remover click-selection (SAM) | ~40 MB |
| License plate detection | ~10 MB |
| Photo Colorizer (Realistic) | ~460 MB — asks first |
| Object remover AI patch (LaMa) | ~196 MB — asks first |
Classical tools — filters, resize, convert, compress, rotate — need no model at all and say so on their pages.
Why some tools ask permission first
Anything over roughly 50 MB never downloads without an explicit yes. You will see a dialog stating the size, what accepting unlocks, and what the no-download alternative is (the colorizer falls back to instant classical styles; the object remover falls back to median fill). Your answer is remembered.
Where models live, and why they can re-download
Models are stored in your browser's Cache Storage. Two things can evict them:
- Clearing site data in browser settings removes them (harmless — they re-download next use).
- Storage pressure. Browsers may silently evict site data when disk runs low — this is the classic "why is it downloading again?" cause. To prevent it, we request persistent storage on your first model download; you can check the status and press "Make durable" in the Downloads manager, and optionally pre-download the models you use most so they are ready offline.
A "✓ On this device" chip on tool pages tells you a model is already local before you start.
Managing disk space
Open the Downloads manager to see every cached model with its real size, or clear site data in your browser to reclaim everything at once. Clearing never breaks anything — tools simply download their model again on next use.