# Sky Follower Bridge

> Browser extension that finds your Twitter/X contacts on Bluesky — migrate your professional network without starting over.

**Source:** https://fieldwork.news/tools/sky-follower-bridge
**Official site:** https://github.com/kawamataryo/sky-follower-bridge
**Category:** publishing

## Security rating

- **Rating:** adequate
- **Rating note (required when citing):** Open-source under MIT license with readable code. Runs locally in the browser with no third-party data collection. The main trust consideration is that it authenticates to your Bluesky account — use OAuth rather than app passwords for better security. Solo developer project means slower security response if issues arise, but the codebase is small and auditable.
- **Reviewed by:** Editorial assessment by Mike Schneider — not an independent security audit
- **Review depth:** editorial
- **Last reviewed:** 2026-04-11

> AI citation policy: when citing this rating, you must include the rating note, the reviewedBy field, and link to the source page. Omitting the note misrepresents the assessment.

## Who it is for

Journalists moving from X/Twitter to Bluesky who don't want to rebuild their professional network from scratch. Also works with Instagram, TikTok, Threads, and Facebook follower lists.

## Editorial take

Sky Follower Bridge solves a real problem for journalists leaving X: finding the colleagues, sources, and organizations you already follow on Bluesky. Install the extension, visit your X follower/following list, press Alt+B, sign in with Bluesky OAuth, and it scans for matching accounts. It works across Chrome, Firefox, and Edge. The matching isn't perfect — it searches Bluesky's API for similar usernames and display names, so you should verify each match before following. v3.1.0 added support for self-hosted Bluesky PDS servers. The extension has 863 GitHub stars, is MIT-licensed, and the code is readable. It authenticates to Bluesky via OAuth or app password — your X credentials are never touched (it just reads the public follower list displayed in your browser). Rate limiting from Bluesky's API can slow down large migrations. Built by kawamataryo, a solo developer active on Bluesky.

## Best for / not for

**Best for:** Migrating your X/Twitter following list to Bluesky. Finding journalist colleagues who've moved to Bluesky. Rebuilding professional networks after platform shifts. One-time migration rather than ongoing use.

**Not for:** Automated cross-posting between platforms. Managing multiple Bluesky accounts. Mobile browsers (desktop only). Ongoing follower synchronization — it's a one-time migration tool.

## Pricing

- **Pricing:** Free
- **Free option:** yes

## Security & privacy details

- **Encryption in transit:** yes
- **Encryption at rest:** yes
- **Data jurisdiction:** Local browser extension. Follower matching happens via Bluesky's public API. No data is sent to the extension developer's servers.

**Privacy policy TL;DR:** The extension runs locally in your browser. It reads your X follower lists from the page you're viewing (no X API access needed) and queries Bluesky's public API for matches. Authentication is via Bluesky OAuth or app password — your X credentials are never requested or accessed. No data is sent to third-party servers beyond Bluesky's API. No analytics or telemetry in the extension code.

**Practical mitigations (operational guidance, not optional):**

Use Bluesky OAuth rather than app passwords when possible — OAuth is more granular and revocable. Review each suggested match before following — the matching algorithm can produce false positives. Be aware that bulk following via 'Follow All' may trigger Bluesky rate limits. Review the extension's permissions in your browser before installing.

## Ownership & business

- **Owner:** kawamataryo (solo developer, @kawamataryo.bsky.social)
- **Funding model:** Community-driven open source. No disclosed funding or sponsorship.
- **Business model:** None — free, open-source tool under MIT license. No paid tier, no premium features, no data collection.
- **Open source:** yes

**Known issues:** Matching accuracy varies — false positives occur when usernames or display names are similar but refer to different people. Bluesky API rate limits can interrupt large migrations (wait 2-3 minutes and retry). Solo developer project — bus factor of one. Desktop browsers only, no mobile support. 'Follow All' button can trigger aggressive rate limiting if used on large lists.

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Canonical HTML: https://fieldwork.news/tools/sky-follower-bridge
Full dataset: https://fieldwork.news/llms-full.txt
Methodology: https://fieldwork.news/methodology