WhatsApp has become one of the most popular instant messaging apps on mobile devices, and needless to say, the last few months have obviously caused a spike in global usage for obvious reasons.
At the same time, many people use WhatsApp not only for text messaging but also for sharing photos and videos. All the content that is shared on WhatsApp ends up eating up valuable space on the device, while also being included in backups that the app itself can create and store in the cloud.
On devices with a limited amount of storage, managing files that are stored by WhatsApp has become a critical thing, especially because the more you use the app, the more space it needs on the local drive.
For example, on my iPhone WhatsApp uses over 20GB of storage, and needless to say, most of it comes down to photos and videos that me and my contacts shared since I installed the app.