As that seemed to be the primary motivation for suggesting 'gzip -t' to display the size, I'm taking the liberty of closing Bug#32903 dated 2018-10-02.
We've recently changed 'gzip -l' so that it displays the correct
uncompressed size, and this change should appear in the next gzip release.
- bug#32903: [PATCH] Display uncompressed size when testing Stephen Kitt
- bug#32903: [PATCH] Display uncompressed size when te... Sergey Ponomarev
- bug#32903: [PATCH] Display uncompressed size whe... Stephen Kitt
- bug#32903: [PATCH] Display uncompressed size... Sergey Ponomarev
- bug#32903: [PATCH] Display uncompressed ... Stephen Kitt
- bug#32903: [PATCH] Display uncompressed size when te... Paul Eggert