Paste a fit from the in-game Fitting window (Save fitting → Copy to clipboard)
Fitting
Fit mastery
Pick a skill book to see which modules need it.
Imports into an in-game skill plan: Skills → Skill Plans → Import from clipboard
Example data. The Rifter fit, the Tackle role skills and all skill data are a sample built in, not one of your doctrines, and the skill requirements haven't been checked against CCP's data. Pasted fits look up real skills, icons and ship renders from EVE's ESI once this page runs on your own domain.