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LeiLong Lab · 91yun

91yun – practical privacy & AI tools, in English

Small, honest tools and guides from LeiLong Lab. Our tools run entirely in your browser, so your files stay on your device.

Tools

Photo EXIF Viewer & GPS Remover

Check a JPEG for hidden GPS location, device and date metadata, strip it in one click and re-check the clean copy. Free, no uploads.

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Guides

How to remove EXIF data from photos

What photo metadata reveals, when to remove it, and how to strip location data before you share a picture.