PostScript is 40 this year; PDF turns 30: HTML is 29.

We’ve had these document formats for long enough that we can reasonably call them long-term document retention formats, right?

Physical media decay is more of a problem than reading old files at this point.

— Charlie Stross (@cstross) May 2, 2022

File types that will probably still work in 100 years:

• PDF
• JPG
• BMP (merely because it’s easy to build a decoder for comparatively)
• WAV (same as above)