Some YouTube to MP3 converters can go offline depending on what type of tool it is. 4K YouTube to MP3 and MediaHuman YouTube to MP3 Converter are two such desktop applications that download and convert videos without the need for an active internet connection. This conversion process occurs completely off-line after the video has been downloaded and software installed. It is great for those who wish to circumvent bandwidth limitations or if you are often without internet access. Say you have a 10-minute video than can be converted offline in less then a minute (based on the computing power of your device).
Offline conversion is fast and can process a large amount of data at once. For instance, 4K YouTube to MP3 lets users download and convert multiple files parallelly at the same time where each simultaneous process can save around 40% of your precious subscription money if you listen those on cloud. Offline tools may also be useful for convert large amount of content, and some inline version might not have feature such as bitrate number & ouput format you want to use.
Having the option to use this app offline is important in places where internet access can be spotty or costly. In some Southeast Asia regions, over 35% of users in areas where the availability of tools is uncertain use offline mode because they are reliable and save time. You might come across terms such as "local processing" or "batch conversion," both of which mean offline services, and that is something you should consider when deciding which tool to use.
The downside of using offline converters is that it will make you miss out on features such as automatic updates, and being in sync with YouTube's continuously evolving algorithms. Releasing the updates online converts those automatically to new converters but with an offline tool these need manual update so they may not reflect latest updates or might even abuse functionality if left outdated.
Users that instead want options can return to a web-based YouTube to MP3 converter for instant online conversions, however this relies on a solid data connection.