Private by design
Your files never leave the device. The model comes to you instead of your data going to it.
Free Online AI Tools
Real neural networks that download once and then do their work on your own machine. Nothing is uploaded, there is no signup, and results carry no watermark.
AI Background Remover
Cut the subject out of a photo with a U2Netp network running on WebAssembly, and download a transparent PNG.
Open the background removerAI Image Generator
Turn a prompt into a picture with Z-Image-Turbo, loaded from Hugging Face and drawn on your own GPU.
Open the image generator
What is inside
AI That Runs on Your Device
Each link opens a focused tool with its own instructions and examples.
| Tool | Use it when | Runs in the browser |
|---|---|---|
| AI Background Remover | You want the subject of a photo on a transparent or solid background | Yes |
| AI Image Generator | You want a new picture drawn from a text prompt | Yes (WebGPU, WebAssembly fallback) |
Privacy: the tools run with JavaScript and WebAssembly in your browser. Photos and files are never uploaded to the 73hi server and nothing is stored.
Why local AI
No Queue, No Upload, No Watermark
Sending a picture to a server takes time and gives it away. Running the model locally avoids both.
No server queue
Once the model is cached, processing starts immediately and never waits behind another user's job.
Real models
These are trained neural networks executed through ONNX Runtime Web, not colour tricks or simple filters.
Free to use
No signup, no daily quota, and no watermark on anything you download.
Questions and answers
AI Tools FAQ
Do these AI tools upload my files?
No. Each tool downloads its model from this site once and then runs the neural network inside your browser, so your files stay on your device.
Why do the tools download so much on the first run?
The first run fetches the WebAssembly engine and the model weights, which are cached by your browser. Later runs start immediately.
Are the AI tools free?
Yes. Every AI tool on 73hi is free to use with no signup, no daily limit and no watermark on the results.
Do the AI tools work on mobile?
They work in any modern mobile browser that supports WebAssembly, but the first model download uses mobile data and older phones can be slow.