# Substrate Connect Extension

> Browser extension that keeps the latest state of well known substrate-based chains' specs and bootnodes (Polkadot, Kusama, Rococo, Westend) synced across tabs - using Substrate Connect and Smoldot light client;

Canonical page: [https://chrome-stats.com/d/substrate-connect](https://chrome-stats.com/d/substrate-connect)

## Overview

- **ID:** `substrate-connect`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Parity Technologies
- **Category:** web-development
- **Daily users:** 4
- **Rating:** 5.00 / 5 (4 ratings)
- **Version:** 0.14.9
- **Last updated:** 2025-09-03
- **First published:** 2021-12-19
- **Size:** 2.87 MB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/substrate-connect/)
- **Website:** [https://github.com/paritytech/substrate-connect](https://github.com/paritytech/substrate-connect)

## Description

Substrate Connect Extension is a Firefox add-on that updates and synchronizes well-known substrate chain specs (Polkadot, Kusama, Rococo, Westend) for faster chain sync. It provides the latest specs to dApps supporting Substrate Connect and allows them to appear as connected.

## Rankings

- #46,479 — Overall

## Permissions and access

### Permissions

- `notifications`
- `storage`
- `tabs`
- `alarms`

### Content script matches

- `*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/substrate-connect)