# Substack Friend Finder > Find people who share your niche reading interests on Substack Canonical page: [https://chrome-stats.com/d/substack-friend-finder](https://chrome-stats.com/d/substack-friend-finder) ## Overview - **ID:** `substack-friend-finder` - **Platform:** Firefox - **Type:** Firefox add-on - **Status:** Available - **Publisher:** Vansh Kumar - **Category:** social-communication - **Daily users:** 2 - **Version:** 1.0.0 - **Last updated:** 2026-01-25 - **First published:** 2026-01-22 - **Size:** 29 KB - **Data as of:** 2026-09-12 - **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/substack-friend-finder/) ## Description Find people with similar interests based on your Substack newsletter subscriptions. HOW IT WORKS 1. Enter your Substack username 2. The extension scans your subscribed newsletters 3. For each newsletter, it finds other subscribers and followers 4. People who appear in multiple of your niche newsletters are surfaced as matches 5. Matches are ranked by a "nicheness" score - shared small newsletters count more FEATURES • Scans ALL your subscribed newsletters • Finds subscribers AND followers of each newsletter • Nicheness-weighted scoring (niche newsletters count more) • Export all matches to CSV for further analysis • Progress saves automatically - close and reopen anytime • 100% private - all data stays in your browser PRIVACY • No data is ever sent to external servers • No analytics or tracking • All data stored locally in your browser • Open source: https://github.com/vanshkumar/substack-friend-finder TIPS • Keep the Substack tab open while scanning • Scanning takes 8-15 seconds per newsletter (to avoid rate limits) • Results are cached - rescan anytime to refresh ## Rankings - #64,525 — Overall - #80 — friend - #198 — finder ## Permissions and access ### Permissions - `storage` - `activeTab` - `*://*.substack.com/*` ### Content script matches - `*.substack.com` - `substack.com` ## Safety - **Risk impact:** Low risk impact - **Risk likelihood:** Moderate risk likelihood ### Analysis details - Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk. - 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). ## Similar extensions and apps - [Substack Tools](https://chrome-stats.com/d/substack-tools) — 6 users - [Feedstack](https://chrome-stats.com/d/feedstack) - [Substack Insights](https://chrome-stats.com/d/substack-insights-unofficial) — 6 users - [BlockedStack](https://chrome-stats.com/d/blockedstack) — 50 users, 4.00 / 5 - [Substack Notification Filter](https://chrome-stats.com/d/substack-notification-filter) — 1 users - [Substack Archive Search - Substack Post Indexer](https://chrome-stats.com/d/substack-archive-search) — 1 users, 5.00 / 5 - [newsmatch.me](https://chrome-stats.com/d/newsmatch-me) - [WriteRoom](https://chrome-stats.com/d/writeroom) - [StreetPass for Mastodon](https://chrome-stats.com/d/streetpass-for-mastodon) — 1,014 users, 4.98 / 5 - [Connect with Fellow Learners](https://chrome-stats.com/d/connect-with-fellow-learners) — 1 users - [Substack Like Hider](https://chrome-stats.com/d/substack-like-hider) — 1 users - [Substack Exporter](https://chrome-stats.com/d/substack-exporter) — 5 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/substack-friend-finder)