SQLite Index Advisor - Optimize Query Performance

Analyze SQLite queries and get index recommendations. Use EXPLAIN to find slow queries. Browser-based database optimization.

Load Database

Drop SQLite file here or click to browse

It analyzes your queries using EXPLAIN QUERY PLAN and identifies table scans that could benefit from indexes.

A SCAN TABLE means SQLite reads every row. Adding an index on filtered/joined columns can speed this up dramatically.

No. It suggests CREATE INDEX statements that you can review and apply. You control what gets created.

It examines the query plan and schema, not the data itself. Recommendations are based on query patterns.

No. All analysis happens locally using SQL.js. Your data stays in your browser.

The tool shows existing indexes and won't suggest duplicates. It may suggest composite indexes even if single-column ones exist.

Yes. Run your query before and after creating an index to see the execution time difference.

An index that includes all columns needed by a query, eliminating the need to access the main table. Very fast.

Not necessarily. Indexes speed up reads but slow writes. Add indexes for frequently-run queries.

Use the Query Analysis tab to write queries. Common patterns like WHERE and JOIN clauses are analyzed.