Free Tool for Artists
Upload your painting and get thoughtful, structured feedback on values, color, edges, composition, and more — like having a studio mentor review your work.
How It Works
Grab a free Gemini API key from Google AI Studio — no credit card, takes 2 minutes.
Drop in a photo of your painting — oil, acrylic, watercolor, digital, sketch — anything.
Select what you want analyzed: values, color, edges, composition, portraits, landscapes, or all of it.
Receive structured critique, then ask follow-up questions to go deeper on anything.
You need a free Google Gemini API key. Get one in 2 minutes at aistudio.google.com → sign in with any Google account → click Get API Key → Create API key. Your key is used only in your browser and is never stored anywhere.
The Tool
I'm a self-taught oil painter and instructor based in Florida. I built this tool to give artists
the kind of structured, honest feedback that's hard to come by — especially when you're painting alone.
It reflects the same framework I use when critiquing student work: values first, then color, edges, and composition.
Explore more at davecollom.com or check out
CanvasCrusader — my full painting instruction app.