StashBridge

Extension Developer Tools

Item media 1 (screenshot) for StashBridge

Overview

Sync localStorage across browsers and devices

Web apps store your preferences, favorites, and UI state in localStorage. Switch browsers, clear your cache, or open a new device — and it's all gone. There's no native way to sync this across browsers. StashBridge is a browser extension that watches localStorage on sites you whitelist and syncs it across all your browsers. ZERO SETUP DEFAULT — Uses your browser's built-in sync (Chrome Sync, Brave Sync, Firefox Sync). Just install, whitelist sites, and go. No server needed. OPTIONAL SERVER RELAY — For cross-browser sync (Chrome to Firefox), connect a free Cloudflare Worker relay. FEATURES • Configurable origin whitelist — only sync the sites you choose • Per-key sync — granular key filtering or wildcard (sync all keys) • LZ-String compression — fits more data in the 100KB browser sync limit • Optional AES-256 encryption — encrypt data with a passphrase before syncing • Storage usage indicator — see how much of the sync quota you're using • Offline resilient — changes queue locally and push when connectivity returns • Dark glassmorphism UI — clean, minimal popup interface USE CASES • Sync favorited plugins on Obsidian Stats • Keep Hacker News upvoted/hidden stories across browsers • Sync preferences for dev tools (Swagger UI, GraphQL Playground) • Persist layout preferences for self-hosted dashboards • Any web app that stores state in localStorage but doesn't offer cloud sync COST: $0/month. Browser sync is free. The optional server relay runs on Cloudflare's free tier. PRIVACY: No data is collected or sent to the developer. All sync happens through your browser's built-in sync or a server you control. Open source at github.com/cybersader/stashbridge

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Details

Version
0.1.0
Updated
April 6, 2026
Flag concern
Offered by
Cybersader
Size
47.69KiB
Languages
English
Developer
Email
l2.chrome.dev@inbox32.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

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