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 Home » OlderGeeks.com Freeware Downloads » Photography, Graphics and Images » JPGRepair 1.03.0025   
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JPGRepair 1.03.0025
Fix and Repair corrupt JPEG headers and invalid markers

JPGRepair – JPEG Repair Software – JPEG Repair Tool

This is the future home of JPGRepair, my software to fix and repair corrupt JPEG headers and invalid markers. In case the header of a JPEG file is corrupt you will not be able to open or view the the file.






A JPEG header only represents a tiny amount of the file and that corruption may be beyond this header. For JPGRepair to work the actual image bitstream needs to be detectable. This means JPGRepair needs to find the SOS and EOI markers within the corrupt image.

SOS: Start of Scan, “FF DA” in hex.
EOI: End if Image, “FF D9” in hex.

JPGRepair also repairs invalid markers within the actual image stream. For this it does not depend on a reference file.

Free version is functional except for the batch mode being disabled.


Example Repair

This after repair example file had both a corrupt header and invalid JPEG markers in the image bit stream. Note that this JPEG contains Restart Markers, without these corruption would be more severe:

JPEG file with corrupt header and invalid JPEG markers after repair




Result after editing (clone stamping) the image using Paint.NET




The method to Fix and Repair corrupt JPEG headers

JPGRepair uses a simple method to repair JPEG files:

User should provide a sample image. This has to be a known good image that was shot with the same camera, using same resolution and orientation (portrait/landscape). Simply place the reference or sample file in the directory containing the corrupt JPEGs.
JpgRepair will extract the header from known good sample
It then processes the header
Merge the processed header with the image bitstream of the corrupt file
Process image bitstream and fix invalid JPEG markers

JPGRepair can make backup copies of processed files, however I still recommend you only work on copies of the corrupt files.

Fix and Repair corrupt JPEG headers using JPGRepair




The need for a sample file is a disadvantage when comparing JPGRepair to already existing JPEG repair tools such as Stellar’s JPEG Repair. After all, if the software or camera that was used to create the JPEG image is no longer available the file can not be repaired. On the other hand, the chance JPGRepair can actually repair corrupt header damage is better.




Downloads Views Developer Last Update Version Size Type Rank
37 306 DiskTuna <img src="https://www.oldergeeks.com/downloads/gallery/thumbs/JPGRepair4_th.png"border="0"> Jun 12, 2018 - 10:49 1.03.0025 25.9KB ZIP 5/5, out of 1 Votes.
File Tags
JPGRepair  1.03.0025  
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56Kbit Modem:  4s  · 256Kbit:  1s  · 1Mbit:  1s  · 5Mbit:  1s
   

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