Garnavya/ExifGrid ? reverse-engineered prompt

Build me a fast, privacy first web app for viewing photo metadata right in the browser. I want to drag and drop a bunch of images, see them in a clean masonry style grid, and instantly inspect EXIF details like camera model, aperture, shutter speed, ISO, focal length, and GPS if it exists. Let me filter the photos by those fields, compare two images side by side with their metadata, and click into a lightbox for a closer look.

I also want export options, including a CSV of the metadata, a safe export that strips EXIF and location data, and a fun Polaroid style image export with custom captions. If a photo has GPS data, show it on a map. Keep it responsive, smooth, and private, with the image processing happening locally in the browser. If you need to look up current docs for any image or map libraries, go ahead.