Quizlet supports images and has a dedicated Diagrams mode for labeling practice, but there are real limitations in image quality and the lack of true spaced repetition for image-based review. Understanding what Quizlet can and cannot do with image content helps you decide whether it fits your specific visual learning workflow.
This page covers Quizlet's image features, the compression issue, and how to use Diagrams mode effectively.
Quizlet allows one image per card side, uploaded from device or searched from their built-in image library (which is Shutterstock-sourced). Images are compressed on upload, which matters for diagrams with fine text or small labels. For general visual association (flag = country, artwork = artist name), the compression is rarely a problem. For medical diagrams, circuit schematics, or microscopy slides where fine detail is the point, the compression will degrade the image enough to make some labels unreadable. Test this before building a large deck: upload one of your most detail-dense images and zoom in during review. If the text is legible, you are fine. If not, Anki or a PDF-based approach is the better route.
Quizlet Diagrams lets you place labels on an uploaded image and practice identifying them. You choose an image, place clickable label pins at specific locations, and name each pin. During practice, label names are hidden and you click on the correct location when prompted. This is conceptually similar to image occlusion but implemented differently: you are practicing location recall rather than label recall. For geography (map labeling), anatomy overview diagrams, or art identification, Diagrams works well. The limitation is that Diagrams has no spaced repetition scheduling. You can practice as often as you want but the app does not track which labels you struggle with and prioritize them. For efficient long-term retention, this is a meaningful gap compared to Anki's occlusion approach.
Quizlet is adequate for general visual flashcards and good for Diagrams-based map and overview labeling. It is not suitable for detail-dense medical or scientific diagrams due to image compression. If image quality is critical to your subject, use Anki instead. Gridually's spatial encoding is based on memory research from the University of Chicago, University of Bonn, and Macquarie University.
Image occlusion covers parts of a diagram or image during review, requiring you to recall what is hidden. You might study an anatomy diagram with one muscle label covered, answer, then see the label revealed. It is the most effective way to study labeled diagrams because it requires active recall of the specific part rather than passive recognition of the whole image.
Anki with the Image Occlusion Enhanced add-on is the strongest option for image-heavy subjects. It preserves image quality, supports occlusion, and handles large image sets efficiently. The trade-off is a more complex setup. Quizlet is easier to use but compresses images and lacks true occlusion. RemNote has built-in image occlusion without add-ons.
Most major apps support direct image paste or upload from your camera roll. Anki on desktop accepts drag-and-drop and clipboard paste. Quizlet's mobile app can access your camera roll directly. The main consideration is whether the app compresses the image on import, which affects readability for detailed diagrams or small-text screenshots.