Does Mosaikin remove the location data from my photos?

Yes — EXIF and GPS metadata are stripped and the image is re-saved before it is stored, and never served to anyone.

Yes. A photo taken on a phone usually carries hidden metadata: where it was taken, when, on what device. None of that survives.

It is removed twice over. Your own browser re-saves the image before sending it, which drops the metadata on your device. Then the stored copy is decoded and re-encoded again, keeping only the pixels — with the camera’s rotation baked into the image so it is the right way up. The original, metadata and all, is never published.

The archive the host downloads is made from those cleaned files, so the metadata is not in there either.