# @libp2p/peer-id

> Implementation of @libp2p/interface-peer-id

Latest version **6.0.15** (published 2026-08-23) · Apache-2.0 OR MIT license · 0 weekly downloads

## Install

```sh
npm install @libp2p/peer-id
pnpm add @libp2p/peer-id
yarn add @libp2p/peer-id
bun add @libp2p/peer-id
```

## Health

**Score 75/100 (B)** — status: active.

Positive: has types; esm support; no vulnerabilities; has provenance; recently updated; high maintenance score; high quality score.

Warnings: low downloads.

## Facts

| | |
|---|---|
| Version | 6.0.15 |
| Published | 2026-08-23 |
| First published | 2022-01-04 |
| Weekly downloads | 0 |
| License | Apache-2.0 OR MIT |
| TypeScript types | bundled |
| Module format | ESM |
| Dependencies | 4 |
| Unpacked size | 813.2 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Provenance | attested (GitHub Actions) |
| GitHub stars | 2579 |
| Maintainers | daviddias, alanshaw, achingbrain, vascosantos, npm-service-account-libp2p, jacobheun |
| Keywords | IPFS |

## Links

- npm: https://www.npmjs.com/package/@libp2p/peer-id
- Repository: https://github.com/libp2p/js-libp2p
- Homepage: https://github.com/libp2p/js-libp2p/tree/main/packages/peer-id#readme
- Issues: https://github.com/libp2p/js-libp2p/issues
- npm.io page: https://npm.io/package/@libp2p/peer-id

## Dependencies (4)

- [uint8arrays](https://npm.io/package/uint8arrays.md) ^6.1.1
- [multiformats](https://npm.io/package/multiformats.md) ^14.0.0
- [@libp2p/crypto](https://npm.io/package/@libp2p/crypto.md) ^5.1.23
- [@libp2p/interface](https://npm.io/package/@libp2p/interface.md) ^3.3.0

## Recent versions

- 6.0.15 (latest) — 2026-08-23
- 6.0.15-5cb617ae2 (next) — 2026-09-02
- 6.0.15-185d901cd — 2026-09-02
- 6.0.15-cef4d32cf — 2026-08-31
- 6.0.15-ac7305ccf — 2026-08-31
- 6.0.15-87dca02b0 — 2026-08-27
- 6.0.15-4a6c5d11a — 2026-08-27
- 6.0.14-947d304ed — 2026-08-22
- 6.0.14-0967e75f5 — 2026-08-22
- 6.0.14-4dae661b4 — 2026-08-22
- 6.0.14-8786aa8d0 — 2026-08-20
- 6.0.14-55d7a539a — 2026-08-20
- 6.0.14-d5534174d — 2026-08-13
- 6.0.14-47cf9cdc1 — 2026-08-10
- 6.0.14 — 2026-07-30
- … 883 more at https://npm.io/package/@libp2p/peer-id/versions

## README

# @libp2p/peer-id

[![libp2p.io](https://img.shields.io/badge/project-libp2p-yellow.svg?style=flat-square)](http://libp2p.io/)
[![Discuss](https://img.shields.io/discourse/https/discuss.libp2p.io/posts.svg?style=flat-square)](https://discuss.libp2p.io)
[![codecov](https://img.shields.io/codecov/c/github/libp2p/js-libp2p.svg?style=flat-square)](https://codecov.io/gh/libp2p/js-libp2p)
[![CI](https://img.shields.io/github/actions/workflow/status/libp2p/js-libp2p/main.yml?branch=main\&style=flat-square)](https://github.com/libp2p/js-libp2p/actions/workflows/main.yml?query=branch%3Amain)

> Implementation of @libp2p/interface-peer-id

# About

<!--

!IMPORTANT!

Everything in this README between "# About" and "# Install" is automatically
generated and will be overwritten the next time the doc generator is run.

To make changes to this section, please update the @packageDocumentation section
of src/index.js or src/index.ts

To experiment with formatting, please run "npm run docs" from the root of this
repo and examine the changes made.

-->

An implementation of a peer id

## Example

```TypeScript
import { peerIdFromString } from '@libp2p/peer-id'
const peer = peerIdFromString('12D3KooWKnDdG3iXw9eTFijk3EWSunZcFi54Zka4wmtqtt6rPxc8')

console.log(peer.toCID()) // CID(bafzaa...)
console.log(peer.toString()) // "12D3K..."
```

# Install

```console
$ npm i @libp2p/peer-id
```

## Browser `<script>` tag

Loading this module through a script tag will make its exports available as `Libp2pPeerId` in the global namespace.

```html
<script src="https://unpkg.com/@libp2p/peer-id/dist/index.min.js"></script>
```

# API Docs

- <https://libp2p.github.io/js-libp2p/modules/_libp2p_peer-id.html>

# License

Licensed under either of

- Apache 2.0, ([LICENSE-APACHE](https://github.com/libp2p/js-libp2p/blob/main/packages/peer-id/LICENSE-APACHE) / <http://www.apache.org/licenses/LICENSE-2.0>)
- MIT ([LICENSE-MIT](https://github.com/libp2p/js-libp2p/blob/main/packages/peer-id/LICENSE-MIT) / <http://opensource.org/licenses/MIT>)

# Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

---
_Source: https://npm.io/package/@libp2p/peer-id · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._