# Advanced

- [Registering a custom Service Worker](/developer/sdk/web/advanced/declare-path-service-worker.md)
- [Integrating Batch with an existing Service Worker](/developer/sdk/web/advanced/integrating-batch-with-existing-service-worker.md)
- [Managing icons in the Javascript tag](/developer/sdk/web/advanced/tag-icons-management.md)
- [Migrating from v2](/developer/sdk/web/advanced/2x-migration.md)
- [Migrating from v3](/developer/sdk/web/advanced/3x-migration.md)