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What is JPEGsnoop?
JPEGsnoop is an interesting tool designed for advanced analysis of files saved in JPG, THM, AVI, DNG, PSD, CRW, CR2, NEF, ORF, PEF, MOV formats.
One of the main features of the application is the ability to compare signatures compress files using reported by users database signatures. JPEGsnoop by offering few scanning algorithms can determine which camera model was used to take a picture, whether it was modified in a app etc. When the program detects for example Photoshop signature you can be assumed that the photograph does not come from the original source.
JPEGsnoop also generates a report on the quantization tables, the table Huffman, resolution and file size of RGB histogram, file compression, JFIF marker data, metadata stored in the EXIF and IPTC formats like. In addition, the program can be used to verify in which quality the file was saved in a app like Photoshop, increasing prominence of scanner or extracting files from PDF documents.
You can also send the data form photos to JPEGsnoop data base. Created reports can be printed or saved to a TXT and open it in any application that supports this format.