A browser extension that migrates Chrome or Edge users to Firefox or Brave with their extensions, whitelists, and settings intact after MV2 enforcement
Chrome permanently killed MV2 extensions in 2026 and Edge followed in February 2025, stripping hundreds of millions of users of uBlock Origin and other content blockers with no migration path. Firefox and Brave kept full MV2 support, but switching browsers manually means losing all extensions, custom filter lists, whitelist rules, and per-site settings — so most users downgrade to the weaker MV3 blockers rather than move. This extension detects the user's installed MV2 extensions, finds equivalent or superior versions on the destination browser, migrates custom filter lists and whitelist rules automatically, and walks the user through a one-click browser switch.
Demand Breakdown
Social Proof 4 sources
Gap Assessment
4 tools exist (Firefox, Brave, uBlock Origin Lite, AdGuard) but gaps remain: No migration tooling — users must manually reinstall every extension, re-enter all filter lists, and recreate all whitelist rules by hand; this friction keeps most Chrome users on Chrome with weakened blockers; No migration tool for importing Chrome extension settings, custom filter lists, or whitelist rules from uBlock Origin; built-in Brave Shields is not a replacement for power-user uBlock Origin configurations.
Features6 agent-ready prompts
Competitive LandscapeFREE
| Product | Does | Missing |
|---|---|---|
| Firefox | Full MV2 support including uBlock Origin; ~250M users; the primary destination browser for power users fleeing Chrome | No migration tooling — users must manually reinstall every extension, re-enter all filter lists, and recreate all whitelist rules by hand; this friction keeps most Chrome users on Chrome with weakened blockers |
| Brave | Chromium-based with built-in Brave Shields ad-blocking and uBlock Origin support; ~70M users; easier transition for Chrome users since the UI is familiar | No migration tool for importing Chrome extension settings, custom filter lists, or whitelist rules from uBlock Origin; built-in Brave Shields is not a replacement for power-user uBlock Origin configurations |
| uBlock Origin Lite | MV3-compatible reduced-feature version of uBlock Origin for Chrome; ~4M installs; free | Cannot import existing uBlock Origin filter lists or whitelist rules; dynamic filtering disabled; per-site rules stripped; significantly weaker blocking than MV2 uBlock Origin — the product that created the demand gap this idea fills |
| AdGuard | Commercial MV3-compatible ad blocker for Chrome and Edge; desktop app version bypasses MV3 limits by running as a system-level network filter | No browser migration wizard; does not migrate user's existing uBlock Origin filter lists or whitelist rules; desktop app requires paid subscription (~$30/yr); does not solve the cross-browser profile migration problem |
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