EXIF Viewer
Extract limited EXIF metadata from JPEG (local only).
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How it works
How it works
- Scans JPEG markers to find APP1. EXIF lives in APP1 segments prefixed by the ASCII header “Exif\0\0”.
- Interprets the embedded TIFF header: byte order “II” (little‑endian) or “MM” (big‑endian), then jumps to IFD0.
- Reads IFD entries (12 bytes each): tag, type, count, value/offset; supports a few types (ASCII, SHORT, LONG, RATIONAL).
- Extracts common tags: Make, Model, DateTime, DateTimeOriginal, ExposureTime, ISO, Width, Height.
- Limitations: many tags and sub‑IFDs (GPS/thumbnail) are skipped; malformed files may fail to parse.
Privacy & Security
File never leaves browser; processed in-memory.
Accuracy, Limits & Tips
Limited tag set; ignores sub-IFDs (GPS, thumbnail), no BigTIFF, minimal validation.
Examples
- Select a JPEG from your device.
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