# Lit, release history and use on real websites.

A library from Google for building web components (Custom Elements). The components work in any framework or none, which is why it is used in design systems and Google products.

- **Status:** Modern. The successor of Polymer, actively developed; standard web components with no dependency on a particular framework.
- **Category:** [JS/CSS Frameworks](https://be1st.ai/technologies/framework)
- **First release:** 2018
- **License:** BSD-3-Clause
- **Latest version:** 3.3.3 (14 May 2026)
- **Official website:** https://lit.dev
- **Documentation:** https://lit.dev/docs/
- **GitHub:** https://github.com/lit/lit
- **Page:** https://be1st.ai/technologies/framework/lit

## Lit on audited websites

487 of the 16,845 websites audited by be1st run Lit (2.9%). That ranks it #7 of the 35 technologies in JS/CSS Frameworks we have seen in audits.

### Websites running Lit vs all websites

- **Web score:** 68 (all websites 72)
- **SEO:** 79 (all websites 79)
- **Security:** 55 (all websites 59)
- **Performance:** 57 (all websites 72)
- **AI Readiness:** 31 (all websites 31)

### Most used in JS/CSS Frameworks

1. [Tailwind CSS](https://be1st.ai/technologies/framework/tailwind-css): 34% (5,653)
2. [jQuery](https://be1st.ai/technologies/framework/jquery): 29% (4,883)
3. [Next.js](https://be1st.ai/technologies/framework/next-js): 23% (3,836)
4. [React](https://be1st.ai/technologies/framework/react): 22% (3,626)
5. [Bootstrap](https://be1st.ai/technologies/framework/bootstrap): 13% (2,198)
6. [PHP](https://be1st.ai/technologies/framework/php): 3.0% (502)
7. [Lit](https://be1st.ai/technologies/framework/lit): 2.9% (487)
8. [Astro](https://be1st.ai/technologies/framework/astro): 2.4% (405)
9. [Vue.js](https://be1st.ai/technologies/framework/vue-js): 2.2% (373)
10. [Alpine.js](https://be1st.ai/technologies/framework/alpine-js): 2.0% (341)

The number for React counts only websites where Tech Stack detects it directly, not websites built with Next.js, Gatsby, and Remix, which run it too. The number for Vue.js counts only websites where Tech Stack detects it directly, not websites built with Nuxt, which run it too.

## Lit versions and release history

2 release lines since 2021, as listed by the npm registry. The latest version is 3.3.3, released 14 May 2026.

| Version | Released | Latest release | Releases |
| --- | --- | --- | --- |
| 3 | 10 Oct 2023 | 3.3.3 (14 May 2026) | 14 |
| 2 | 21 Sep 2021 | 2.8.0 (2 Aug 2023) | 32 |

Sources: [npm registry, package lit](https://www.npmjs.com/package/lit), checked 8 Nov 2026.

## Other technologies in JS/CSS Frameworks

- [TanStack Start](https://be1st.ai/technologies/framework/tanstack-start): 1.9% of websites
- [Nette](https://be1st.ai/technologies/framework/nette): 1.8% of websites
- [Nuxt](https://be1st.ai/technologies/framework/nuxt): 1.5% of websites
- [Angular](https://be1st.ai/technologies/framework/angular): 1.2% of websites
- [Preact](https://be1st.ai/technologies/framework/preact): 1.2% of websites
- [UnoCSS](https://be1st.ai/technologies/framework/unocss): 1.2% of websites
- [Express](https://be1st.ai/technologies/framework/express): 1.1% of websites
- [SvelteKit](https://be1st.ai/technologies/framework/sveltekit): 1.1% of websites
- [ASP.NET](https://be1st.ai/technologies/framework/asp-net): 1.0% of websites
- [Django](https://be1st.ai/technologies/framework/django): <1% of websites
- [HTMX](https://be1st.ai/technologies/framework/htmx): <1% of websites
- [Turbo (Hotwire)](https://be1st.ai/technologies/framework/turbo): <1% of websites

[All 38 in JS/CSS Frameworks](https://be1st.ai/technologies/framework)

## Questions about Lit

### What is Lit?

A library from Google for building web components (Custom Elements). The components work in any framework or none, which is why it is used in design systems and Google products. The be1st catalog lists Lit under JS/CSS Frameworks. License of Lit: BSD-3-Clause.

### What is the latest version of Lit?

The latest version of Lit is 3.3.3, released 14 May 2026 (source: npm registry, package lit).

### How many websites use Lit?

487 of the 16,845 websites audited by be1st run Lit (2.9%), as of 8 Nov 2026.

### When was Lit first released?

Lit was first released in 2018; the oldest version listed by the npm registry dates from 2021.

### Is Lit still a modern choice?

Yes. Lit counts as a modern technology. The successor of Polymer, actively developed; standard web components with no dependency on a particular framework.

Numbers: latest audit of each of 16,845 websites audited by be1st, as of 8 Nov 2026.