To note, while [Photopea](https://www.photopea.com/) is used here ([and it's even embeddable in SD-Web-UI!](https://github.com/yankooliveira/sd-webui-photopea-embed)), most modern digital art programs have similar healing / magic eraser tools: [Pixler](https://pixlr.com/), [Fotor](https://www.fotor.com/), of course Photoshop and CorelDraw... and even MSPaint!
Another alternative is dedicated tools like Lama Cleaner, but Photopea is overall faster and easier to use.
Another alternative is dedicated tools like Lama Cleaner, but Photopea is overall faster and easier to use.