IndexedDB was introduced by Oracle and became popular very quickly. It's a Not Only SQL (NoSQL) database. The IndexedDB API is a more capable and far more complex API. IndexedDB has the following significant benefits:
It improves the responsiveness and speed of web programs by minimizing the number of HTTP requests
It provides more space for data without Web Storage limits
It provides the ability to work offline
A NoSQL database helps you work directly with Dart and JavaScript objects
It allows fast indexing, object searching, and granular locking per transaction
It supports synchronous and asynchronous APIs
One of the major disadvantages can be the difficulty in understanding it if you are coming from the world of rational databases. In IndexedDB, we can store a large amount of structured data, images, arrays, and whole objects; you just need to index them with a key. It follows the same origin policy, so we cannot access data across different domains. If you still use Web SQL database...