2018.10.14 15:50 "[Tiff] Zstd and WebP compression in TIFF", by Bob Friesenhahn

2018.10.15 13:29 "Re: [Tiff] Zstd and WebP compression in TIFF", by Even Rouault

There are some other tags allocated in support of these compression formats:

#define TIFFTAG_WEBP_LEVEL              65568
#define TIFFTAG_WEBP_LOSSLESS           65569
#define TIFFTAG_ZSTD_LEVEL              65564

Just a small note: those 3 last ones are pseudo-tags so that calling code can tune compression parameters, but they are not serialized in the file (similarly to deflate compression level)

Even

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