Four reference tools, each built from primary sources that are linked on the page. They work without an account and keep nothing you type.
Rug size planner
Your room, your margin, your furniture: which common sizes fit, and which federal flammability standard each size falls under.
Rug label checker
Which of the two federal rug flammability standards applies, the exact FF 2-70 warning wording, and what the fiber label must and need not say.
Fiber care table
Wool, silk, cotton, jute, viscose and synthetics: pests, light, damp and cleaning, every cell cited to a conservation or regulatory source.
Weaving regions field guide
Knot type, materials and a named, dated example in The Met's collection for each tradition, plus a knot-density converter.
How these were made: see our editorial policy.