There are a huge number of JPEG recovery and undelete programs available on the web, many even for free. However, the vast majority of these can only handle the simplest types of deleted files: unfragmented photos. As a result many of your recovered photos are corrupt. TL;DR: If recovered photos are corrupt you have two… Read More »
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 »
There’s basically three things that can be wrong if a JPEG opens but is partially grey:
1. File is too small. Let’s an average JPEG shot with same camera and settings is 4 MB and the ones that are damaged are like 1 MB or 2 MB. Then probably half the data is simply missing. These files can not be repaired.
2. Normal file size. Either part of the file does not contain image data or file does contain image data but is interrupted by some invalid data.
If part of the file does not contain image data then this is sometimes easy to spot using a hex editor. All of a sudden ‘random’ binary data stops and changes to FF FF FF or 00 00 00 etc.. Repair: Impossible.
In case the data is however is there but it is interrupted repair is often possible. JPG-Repair tries to detect and will try to get rid of the invalid data, however this does not always work. Current version detects invalid JPEG markers, common damage due to bad sectors and some type of corruption I observed a few times with images shot with certain Samsung phones.
If try to open a JPEG file with a corrupt header in the Windows Photo Viewer it will tell you: “Windows Photo Viewer can’t open this picture because the file appears to be damaged, corrupted or is too large.” This message indicates that at least the header of the JPEG is corrupt. If damage is… Read More »
Something I have been doing lately is looking into repair of damaged and corrupt JPEG photos. I have been offering a JPEG repair service for a while now. Learning from that experience I have created a utility that addresses most common issues with corrupt and damaged JPEG files. Basically there are two types of issues… Read More »
Raymond.cc’s JPEG repair challenge If you have googled for software to repair corrupt JPEG photos, then there’s a good chance you have come across this article on Raymond.cc: 5 Tools to Repair Corrupted JPEG Photos and Images. Raymond, or the article author HAL9000 (utterly cool nick!) set up an artificial test to test various tools that… Read More »
When you discover photos on your SD card are corrupt you should: Do as little as possible (read: nothing) with the card. Do NOT run chkdsk on the card itself! Create a disk image of the card immediately! There are free and payed ways to try to recover or repair your photos. So I’ll be… Read More »