UnuploadedGuides · Formats & privacy
Image formats and file privacy
These guides explain what HEIC is and when to convert it, how to choose between JPG, PNG and WEBP, what the EXIF data in a photo can reveal, and how to check whether a converter uploads your files.
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Apple formats
What HEIC Is, and When to Convert ItHow HEIC stores images, why application support varies, and when a JPG or PNG copy helps.
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Photo privacy
What Your Photos Reveal: EXIF and GPSCheck a photo’s location, timestamps and camera fields, and see what else a shared picture can reveal.
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Format choice
JPG, PNG or WEBP: Choosing an Image FormatCompare compression, transparency, editing needs and the actual output file size.
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Verification
How to Tell If a Converter Uploads Your FilesWatch a converter’s network requests, then try a conversion with the device disconnected.
Using the guides
Each guide points to something you can check yourself: a setting you can open, a file you can inspect or a test you can run in your browser. Work on a copy of your file, keep the original, and open the result before you send it. Format support and sharing settings vary between applications.