indexedDB is a low-level API for client-side storage of large amounts of structured data, including files/blobs. This API uses indexes to enable high-performance searches on this data. While Web Storage is useful for storing small amounts of data, it is less useful for storing large amounts of structured data. IndexedDB provides a solution. This is the main landing page for MDN’s IndexedDB coverage – here we provide links to the full API reference and usage guide, browser support details, and some explanations of key concepts.
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Note: The IndexedDB API is powerful, but may seem overly complicated for simple cases. If you prefer a simpler API, try the libraries in the See Also section that make IndexedDB more programmer-friendly.
Key Concepts and Usage
IndexedDB is a transactional database system, similar to an SQL-based RDBMS. However, unlike SQL-based RDBMSs that use fixed lists, IndexedDB is a JavaScript -based
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