![]() Second, you may have to keep converting documents to whichever file format becomes dominant before the old one is abandoned. First, you have to keep moving the data to new storage systems before the old one fails or becomes unreadable. Making digital documents last for ever therefore involves two processes. ![]() jpg/jpeg picture file format developed by the Joint Photographic Experts Group may well last “for ever” despite efforts to replace it with JPEG 2000, PNG (Portable Network Graphics), SVG (Scalable Vector Graphics), SPIFF (Still Picture Interchange File Format), BPG (Better Portable Graphics), FLIF (Free Lossless Image Format), HEIF (High Efficiency Image Format, aka HEIC in Apple’s iOS 11), and Google’s WebP, among others. Operating systems, software and file formats also keep changing, so being able to see a file doesn’t mean you can load it. The photos might be safe but I won’t know unless I buy something that can read them. I still have data on 8in, 5.25in and 3.5in floppy disks, Iomega Zip disks and quarter-inch tapes. To be really safe, you should have more than one copy of each photo, stored in more than one way in more than one place.ĭigital data is a particular problem because storage formats change all the time.
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