Embedded Thumbnail Extractor
Pull the small preview image a camera stores inside the EXIF block of a photo.
Image metadata Client-side TIFF IFD1 reader
Tool preview
How to use it
- 01
Drop a photo.
- 02
The thumbnail is read from IFD1.
- 03
Preview it and download.
Limitations
- ! Only files that actually contain an IFD1 thumbnail; edited or stripped files often do not.
- ! The thumbnail is usually 160×120 or similar, so it is not a full-quality image.
FAQ
Why does the thumbnail matter?
It often shows the original framing, even when the main image was cropped, rotated or edited afterwards.
Is it the same as the main image?
No — it is a separate, much smaller JPEG stored in the EXIF block.
Is the photo uploaded?
No.
Files never leave your device
Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.
Technical details
- Processing
- Client-side
- Implementation
- TIFF IFD1 reader
- Category
- Image metadata
- Network requests
- None while processing
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