CropDen

Image sizes for 14 platforms: 55 sizes with safe zones, upload limits and minimum sizes, plus specs for 6 passport and visa photos. As JSON, an npm package, an agent skill and an MCP server. Data under CC BY 4.0. Website · JSON · 中文说明 Most size lists stop at width × height. When you crop, you also need to know what the app puts on top of your image: the profile picture over a YouTube banner, the caption bar at the bottom of a Story, the 3:4 profile grid that trims a 4:5 Instagram post. This dataset has those areas in pixels. One size per row. Each group has more sizes in the data. Passport photos (make one on CropDen): All sizes and their zones are in data/social-media-image-sizes.json. To crop an image to any of them in your browser, follow the link in the last column. CommonJS works too:…