Flexible Metadata Format

JSON →
library 1.7.0 ·python
verified May 1, 2026

fmf (Flexible Metadata Format) is a file format designed for storing and sharing metadata using a human-friendly Yet Another Markup Language (YAML)-like syntax. Version 1.7.0, released occasionally.

total hits 11
actors 4 distinct systems
last hit 4d ago AhrefsBot
MetaBot
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GPTBot
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Script
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Humans
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