# chinedufn/percy

Build frontend browser apps with Rust + WebAssembly. Supports server side rendering.

Repository: https://github.com/chinedufn/percy
Canonical: https://ross.abutalabs.com/products/percy
Homepage: https://chinedufn.github.io/percy/
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: webassembly, wasm, virtual-dom, browser, web, frontend
Last push: 2026-08-25T00:27:33+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 2970, "days_push": 9, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2315, forks 85 (observed 2026-08-28T04:06:36.781658+00:00)

## What it is
Percy is a collection of Rust libraries for building frontend browser apps with Rust and WebAssembly, centered on an html! macro that generates a virtual DOM with diff/patch support. It supports server-side rendering out of the box, enabling isomorphic single-page applications written entirely in Rust.

## Use cases
- build a single page web app in Rust with WebAssembly
- render HTML on the server from Rust components
- create a virtual DOM app with diff and patch updates in Rust
- build search engine friendly frontend apps rendered server side
- write client-side browser applications without JavaScript
- handle DOM events and attributes from Rust code

## When to choose
- you want to build a browser frontend entirely in Rust and WebAssembly
- you need both server-side and client-side rendering from the same Rust code
- you prefer a virtual DOM approach with an html! macro similar to JSX

## When to avoid
- you need a production-ready, battle-tested framework today
- your team primarily works in JavaScript or TypeScript with an established ecosystem
- you need a large ecosystem of ready-made UI components

## Facets
- artifact type: framework
- maturity: experimental
- function: frontend-framework, ssr, templating, state-management, wasm
- domain: web-development, frontend, programming-languages
- platform: browser, rust, wasm
- tags: virtual-dom, rust-frontend, isomorphic-web-apps, html-macro, single-page-apps, web-server

## Member repositories
- chinedufn/percy (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:36.781658+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:39:25.313844+00:00, confidence not recorded.
  - readme: https://github.com/chinedufn/percy (fetched 2026-08-28T04:06:36.781658+00:00, sha c4a378f95243)
  - homepage: https://chinedufn.github.io/percy/ (fetched 2026-08-29T10:19:20.968280+00:00, sha 935c63737e73)
- Data as of 2026-08-30T08:39:29.467469+00:00.