Picture credits
Word pictures on worksheets and games are optional hints for the target word only. We never show a picture unless it clearly matches that word.
Mulberry Symbols
Many noun and action illustrations come from the Mulberry Symbols set.
License: Creative Commons Attribution-ShareAlike 4.0 (CC BY-SA 4.0)
Mulberry Symbols by Steve Lee — mulberrysymbols.org
Twemoji
Some emoji-style pictures (feelings, colors, simple objects) use Twemoji SVGs.
License: Creative Commons Attribution 4.0 (CC BY 4.0)
Twemoji by Twitter / X — github.com/twitter/twemoji
Syllables World kit drawings
Letter-line and early phonics worksheets also use simple SVG drawings made for this site (files named clue-*.svg).
OpenMoji (legacy)
A few older worksheet clues still use unmodified OpenMoji colour SVGs while we finish migrating to Twemoji.
License: CC BY-SA 4.0 — openmoji.org
Full vendored asset list: static/word-images/ATTRIBUTION.txt in our source repository.