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Reading intelligence
MarginSync
Release candidateSync Kindle highlights into Notion without overwriting the notes and decisions you make there.
What it does
What it protects
MarginSync separates source data from your interpretation. Kindle highlights stay intact, while your Notion status, tags, and notes remain yours.
Core capabilities
Designed around the job.
01Kindle highlight capture
02Resumable local sync
03Controlled Notion projection
04User-field preservation
Technical boundary
Useful because its limits are explicit.
The extension keeps the Kindle snapshot in IndexedDB and treats Notion as a controlled projection with user-owned fields.
MarginSync
What is available
The release candidate can be built and loaded from source. Public store release remains intentionally withheld until migration and background-soak gates are complete.