Web Apps by 123apps is a subscription-based suite of web applications designed for seamless multimedia editing and file conversion. It is accessible as an extension for Firefox, providing users with a variety of tools to enhance productivity. The application includes powerful video editing features such as trimming, cropping, rotating, and adjusting video properties like resolution and volume. Users can also perform audio edits, including changing pitch and speed, and utilize voice recording capabilities.

In addition to video and audio tools, Web Apps by 123apps offers a range of PDF functionalities, including splitting, merging, and compressing files. Users can convert files between formats, such as PDF to Word or JPG, and vice versa. The versatile converters support various file types, including audio, video, images, documents, and more, making it an all-in-one solution for multimedia and file management needs.