How to Verify Your App Strips GPS Metadata Before Retrying Failed Uploads

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Mobile apps that allow photo uploads may inadvertently expose users' GPS coordinates if the background retry queue holds a copy of the original, unstripped file. A recommended testing protocol involves creating synthetic JPEG and HEIC files with known fake metadata, then intercepting actual upload bytes on a test server rather than relying on the UI preview. Developers are advised to verify that the sanitized file path — not the original — is what gets enqueued and re-uploaded after an app restart. The protocol also stresses checking that pixel orientation is corrected separately from metadata removal, as stripping EXIF data without rotating pixels can result in sideways images. Additionally, temporary files should be confirmed as excluded from cloud backups and deleted after a successful upload or upon expiry.

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