Explain PostgreSQL Tools is a free Chrome extension designed to enhance SQL query handling directly within the browser. This tool offers two main features: SQL code formatting and SQL plan analysis. Users can easily format their SQL code by selecting it, opening the context menu, and choosing the formatting option, which then displays the formatted code in a pop-up. Additionally, users can analyze SQL query plans by selecting the relevant plan and accessing the analysis option, which opens the results in a new window. The tool also maintains a history of previous analyses accessible via the extension icon.

This extension is particularly beneficial for developers, analysts, and database administrators looking to optimize their SQL queries. It utilizes an open API for formatting and analysis, with options to modify the API URL in the settings. Importantly, the extension does not collect user data, although users are advised against sharing sensitive information, as the external service may archive submitted data.