Category Archives: image repair

Why is photo repair more expensive than photo recovery?

In this post I’ll try to explain why photo repair is relatively expensive compared to photo recovery. Why is it many photos can be recovered at a fraction of the cost of repairing just a few images?

These 9 Sony memory cards might corrupt your files

Sony has issued a product advisory warning for nine of its SD memory cards, across three different product lines, that might damage your data. The cards, listed below, are at risk of corrupting your files when recording video, according to Sony: SF-M Series SF-M64 SF-M128 SF-M256 (Applicable cards can be identified by the presence of… Read More »

Recent changes to JPEG-Repair Toolkit

2.8.101 # Adds MCU clone tool To repair a JPEG you typically need to remove corrupt data which affects alignment of all data following corruption. To re-align you then insert stuff bytes (zeros) which leave a grey horizontal line. In this video I show how I use MCUs directly above the grey line to replace… Read More »

JPEG restart markers to the rescue

Restart markers make the difference This YouTube channel by my friend and colleague Nguyễn Vũ Hà has many great examples of JPEG-Repair being used to repair STOP/DJVU ransomware affected files. This video in particular is a great showcase on how JPEG restart markers prevent corruption propagating through the JPEG image stream. As you can see… Read More »

Windows Photos: It looks like we don’t support this file format

Windows Photos: “It looks like we don’t support this file format.” The first thing you need to check is if other photo viewers can actually open the file. For example try the ‘old’ Windows Photo Viewer or a third party photo viewer. If those fail to open the photo as well, the file may be… Read More »

JPEG-Repair, no SOS detected

A common error message that JPEG-Repair reports is ‘no SOS detected’. I have written several posts and made videos to repair JPEG photos in case the Windows photo viewers report errors: The old Windows photo viewer: File appears to be damaged, corrupted or is too large. The new Windows Photos: It looks like we don’t… Read More »

Alternative method for half grey or truncated JPEG photo repair

There are various examples on this website of repairs of half grey or truncated JPEG images. In those cases all image data is actually present, but due to an error or corruption only a part of it is visible. If data is simply missing because for example the file is partially overwritten or cut-off, repair… Read More »

Repair/Recover JPEGs encrypted by ransomware STOP Djvu

This article shows repair of JPEGs that fell victim of ransomware. This particular ransomware only encrypts part of the file. Due to this the JPEG header and some 150 KB of JPEG data are lost. Using a reference file and weeding encrypted data we can repair the photo.