Design and diagrams decision
MiroMiro
A competent technical user can implement the core extension functionality and maintain it; the commercial product's hosted API, polish, and user base are the main differences.
Visit website↗$9/mo
$108/yr
Read off the official pricing page.
$100one-off92 h to build
$0/mo1 h/mo upkeep
On cash alone, building overtakes the subscription at 1 seat.
Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need - the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship. All MiroMiro alternatives, with the arithmetic →
What a replacement has to do
- Select an element on a live page → read computed DOM styles and assets in the content script → convert styles to Tailwind / CSS and collect assets/Lottie → present editable overlay and allow download/export to clipboard or local library
What it still won’t have
- Polish, cross-browser testing and UX improvements of the commercial extension
- Hosted MCP server and managed REST API for agent integrations
- Chrome Web Store reputation, prebuilt user base and support channels
- Lifetime deal billing and packaged priority support
What remains hard
- Brand trust
20,000+ developers & designers
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 1 seat.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a Chrome extension (content script + popup UI) and optional minimal Node.js dev server for packaging. Stack: vanilla JS/TypeScript for extension, Tailwind for popup UI, Node.js + Express for optional dev API, chrome.storage for library. Core features in scope: (1) content script to read rendered DOM and computed styles for a selected element, (2) CSS-to-Tailwind conversion and HTML generator, (3) asset and Lottie discovery and download, (4) hover/select overlay with live style edits and copy-to-clipboard, (5) local library persisted in chrome.storage and download manager. Out of scope: hosted MCP server, user accounts, paid billing, analytics dashboard, wide browser compatibility beyond Chromium. Include error handling, unit tests for conversion logic, and end-to-end tests for the extension install and basic extraction flows.
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 4 cited sources+3
- Price verified on pricing page+3
- 3/3 assessment runs agreed+4
- Evidence score67
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time - so the same evidence always produces the same number.
How scoring works →Cited sources · 4
Every page the run actually retrieved.
- official productMiroMiro - Copy Any Website's Code, CSS & Lottie
- official docsFeatures - CSS Inspector & Asset Extractor | MiroMiro
- open sourceBuilderIO/figma-html
- open sourcedembrandt/dembrandt
Integrity checks
What held up, and what did not.