While Apple’s Photos app is a handy way to organize your photos, its options for converting and updating metadata are limited at best, so in these cases you’re better off simply exporting your photos and passing them through a third-party app more specifically geared toward the task. Enter Overmacs’ Reformator ($12), an app expressly designed for bulk image operations, including converting into popular formats, assigning meaningful names, watermarking with text and images, making adjustments, and more.