100% local — both databases stay in your browser
Both files are loaded as in-memory SQLite instances via the official @sqlite.org/sqlite-wasm. Nothing is uploaded.
Left (before)
Right (after)
Drop a SQLite file on each side, then click Compute diff.
This tool runs two SQLite engines entirely inside your browser via WebAssembly. Drop a 'before' and an 'after' .db file (or any pair of SQLite-format files — Chrome History, iOS backups, app caches) and see a precise tree of what changed.
Schema diff shows tables that were added or removed, plus column-level details for tables that appear on both sides. Row diff matches rows by primary key and surfaces inserts, deletes, and column-level updates. Both diffs survive 50 MB-class files smoothly.
The most common use case is verifying a database migration: load before.db and after.db, see what the migration actually did, paste the diff into the PR description.
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