No PDF Download is a Firefox add-on designed to streamline the way PDF files are handled within the browser. By allowing users to view PDF documents directly in the browser, it eliminates the need for the typical 'Save as' dialog or automatic downloads. This utility helps users to access their PDF documents seamlessly, enhancing the overall browsing experience.

To ensure proper functionality, users must adjust their Firefox settings to enable PDF previewing in the browser. While the add-on is effective, it may not work perfectly with all web servers due to potential misconfigurations that can lead to downloads instead of previews. Users are encouraged to report any persistent issues for further analysis.