Turn your sketch into code
Instant wireframe-to-code compiler. 100% Free & Secure.
Drop your sketch here
or browse files — PNG, JPG or WebP
Turn hand-drawn sketches into working code
SketchCode AI is a free, privacy-first wireframe-to-code generator powered by Google Gemini vision. Whether you are a designer validating an idea, a developer skipping the boilerplate, or a founder building a quick prototype, it transforms your image into clean, responsive HTML in seconds — no login, no installs, entirely in your browser.
How to use SketchCode AI
Going from a rough drawing to a live webpage takes four simple steps. The entire sketch-to-code workflow runs client-side, so it is fast, secure and works on any device.
- 1
Add your free Gemini API key
Paste your free key once — it stays private in your browser.
- 2
Upload your hand-drawn sketch
Drag and drop any wireframe photo or scan.
- 3
Convert sketch to code
One click turns your layout into clean, responsive code.
- 4
Copy, preview or download
Preview live, copy, or download a ready-to-run HTML file.
Key benefits
Blazing Fast
Fully client-side, so it loads instantly and converts in seconds.
100% Free
No accounts, no limits — just bring your own free Gemini key.
Developer Friendly
Semantic, responsive code that drops into any project.
Frequently asked questions
Everything you need to know about converting images to code, API keys, privacy and output quality.
SketchCode AI is a free online sketch-to-code generator that converts hand-drawn UI sketches, wireframes and mockups into clean, responsive HTML, CSS and JavaScript using Google’s Gemini vision model. It is a single-page web utility that runs entirely in your browser, making it a fast, private way to turn a napkin drawing into a working webpage prototype.
When you upload an image, the app converts it into a base64 string and sends it directly to the Gemini multimodal API with a strict system prompt instructing the model to output only production-quality, mobile-first code. Gemini analyzes the visual layout, elements and hierarchy of your sketch and returns a single self-contained HTML document that you can preview, copy or download.
Yes. The tool itself is completely free with no account required. You supply your own Google Gemini API key, which you can create at no cost from Google AI Studio. Because you use your own key, you control usage and stay within Google’s generous free tier for most personal projects.
Your privacy is central to the design. The application is 100% client-side, so your Gemini API key is stored only in your browser’s localStorage and is never sent to our servers. Your uploaded sketch is transmitted directly from your browser to Google’s Gemini API and nowhere else, which keeps your data private and the workflow fast.
You can upload PNG, JPG/JPEG and WebP images up to 8 MB. For the best sketch-to-HTML results, use a clear, well-lit, high-contrast photo or scan of your wireframe with distinct boxes, labels and lines so the vision model can accurately interpret the layout.
SketchCode AI produces a single, standalone, responsive HTML file with inline CSS and JavaScript. The output uses semantic markup and accessibility best practices, adapts to mobile and desktop screens, and works without external dependencies, so you can open it in any browser or paste it straight into your project.
The generated code is an excellent starting point and a huge time-saver for prototyping, but like any AI output it should be reviewed and refined before shipping. Treat it as a rapid first draft: verify the structure, tune the styling to match your brand, and add your real content and logic.
No installation is required. SketchCode AI is a browser-based tool that works on desktop and mobile. Just open the page, add your API key once, and start converting sketches to code immediately — there is nothing to download and nothing to configure.
SketchCode AI — a free online sketch to code, wireframe to HTML, and drawing to website converter powered by Google Gemini AI. Convert mockups, whiteboard photos and UI sketches into responsive front-end code instantly, privately and at no cost.