Screenshot to Code AI Tool for Live Web Apps | Alloy
Screenshot to Code Tool
Start with the interface running in your browser, make the change with an AI agent, and take the reviewed result into your codebase.
Generate code from the screen users actually see
A screenshot preserves appearance but discards the system that created it. The DOM, layout rules, loaded fonts, images, and current interaction state all have to be guessed before an AI tool can write anything useful.
Alloy records the working page as the starting point. That gives the agent concrete UI context before you ask for a change, and it lets reviewers test the result inside a familiar product rather than interpret another detached mockup.
- Work from dashboards and internal tools after you sign in
- Keep the page's real typography, imagery, spacing, and structure
- Capture the exact tab, dialog, menu, or panel involved in the idea
- Validate the experience before asking engineering to merge code
How screenshot to code works in Alloy
Move from the current browser state to a tested implementation path in three steps.
Capturing page
Open the exact UI state and capture it
Shipments
Container from Shanghai
40ft • ETA Dec 28 • In transit
Express delivery to NYC
Priority • 2-day • Dispatched
Bulk order processing
8 pallets • Warehouse B • Packed
Air freight to London
Flight CX251 • Tomorrow • Ready
Last mile delivery
12 packages • Route optimized
Tell the agent what should change
Lily Parker
9:41 AM
Here's a quick prototype
Shipments MVP
Added by Alloy
Max Meyer
9:42 AM
Exactly what we need! ✅
Simon Kubica
9:47 AM
you made that in 5 minutes?!
Review the live result or move it into code
Used by product teams that need changes to feel native from the first review.
Alloy is probably the one I use most, especially if I’m talking to users and showing them a prototype. It’s just easier for them to understand when it actually looks like our product.
I’m able to just ship things on my own without talking to anybody — I just use Alloy to do the design. It just fits in my workflow of just shipping things.
Almost every day I’m using Alloy. My PMs also like it a lot, receiving the Alloy prototype to review and send some feedback.
I think that your product is amazing. It’s one of the tools I use the most in my job and it really makes my life simpler when doing definitions.
You guys have built something that’s actually fundamentally very useful. If Alloy disappeared today, I’d be like, ah, what do I use now?
I really like the Alloy app. I’ve already bought it at two companies.
| Capability | Alloy | Builder.io Visual Copilot | v0 | Anima | Locofy |
|---|---|---|---|---|---|
| Primary source | AlloyA running browser screen or public page URL | Builder.io Visual CopilotA selected Figma frame or layer | v0A prompt, screenshot, mockup, or Figma design | AnimaA Figma file, image, or public website URL | LocofyA Figma, Penpot, or Adobe XD design |
| Signed-in product UI | AlloyCaptures the state already open in your authenticated browser | Builder.io Visual CopilotWorks from design files rather than a browser session | v0Accepts an uploaded image of a private screen | AnimaUses a public URL or uploaded visual reference | LocofyWorks from design-tool source files |
| Fidelity anchor | AlloyThe captured page structure, styles, fonts, images, and visible state | Builder.io Visual CopilotFigma layout plus mapped design-system components | v0An AI implementation inferred from the supplied reference | AnimaStructure inferred from Figma, an image, or a public page | LocofyDesign layers, constraints, and configured UI libraries |
| Code handoff | AlloyShareable prototype, React export, or pull request in the connected repo | Builder.io Visual CopilotFramework code through Builder, an IDE extension, or CLI | v0Editable application code with a Vercel deployment path | AnimaReact, HTML, and other export formats or a published site | LocofyWeb and mobile framework code through download or CLI |
| Best fit | AlloyChanging and validating UI inside an existing live product | Builder.io Visual CopilotMoving polished Figma work into an established codebase | v0Generating new applications from conversation and visual inputs | AnimaTurning Figma, images, or public sites into frontend code | LocofyStructured design-to-code handoff across web and mobile |
Design-to-code products are often the right choice when the source of truth is a polished Figma file. Alloy is the better fit when the source of truth is the UI already running in front of a customer. For file-based conversion, start with image to HTML.
Screenshot to code questions
What does screenshot to code mean? Screenshot to code is the process of turning a visual interface into editable frontend code. A conventional tool reads a PNG or JPG and writes a new implementation based on what the model can infer. Alloy can start from the live page instead, keeping the rendered structure and styling available while you make the change.
How does Alloy screenshot-to-code AI work? The Alloy browser extension records the page you are viewing as a high-fidelity capture, including its structure, presentation, assets, and current visible state. The capture opens in an AI prototyping session where you can request changes in natural language, inspect the result in the browser, and keep iterating without rebuilding the surrounding product.
How is browser capture to code different from uploading an image? An uploaded image contains pixels but no page structure, so an AI model has to infer the DOM, layout rules, fonts, assets, and behavior. Browser capture to code begins with the rendered page that produced those pixels. When a static file is the only source you have, Alloy's image to HTML tool supports that workflow too.
Can I use UI capture to code on an authenticated web app? Yes. The extension works from the browser session you already authenticated, which makes it useful for account settings, internal operations tools, SaaS dashboards, and other screens a public URL service cannot reach. You should only capture interfaces and data you are authorised to use.
Can Alloy turn a browser screenshot into HTML or React? A live capture starts from the browser page's HTML and CSS. When you need a standalone handoff, Alloy can export the prototype as a React app. For an existing application, connect the repository so the agent can implement the approved change using that codebase's components and conventions.
Does screenshot to code preserve menus, modals, and other UI states? Capture the state you want to work on while it is visible. An open menu, expanded panel, selected tab, or modal can become part of the editable prototype instead of disappearing into a generic reconstruction. Complex server-backed behavior may still need to be reconnected when the change moves into production code.
Can Alloy create a GitHub pull request from the captured UI? Yes. After you validate the direction in a capture-based prototype, you can use GitHub codebase connectivity to run the application in an Alloy workspace, apply the change to the repository, and open a pull request for engineering review.