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Licenses

Updated October 31, 2026

The chart uses these open-source components under the Apache License 2.0; their licence texts and NOTICE files are served with the chart.

KLineChart

Copyright (c) 2019 lihu
Apache License 2.0 NOTICE

The 3D mark on the home page uses three.js; the chart's emoji picker uses these data and flag images.

three.js

Copyright (c) 2010-2024 three.js authors
MIT License

Microsoft Fluent Emoji

Copyright (c) Microsoft Corporation
MIT License

emojibase-data

Copyright (c) 2017-2019 Miles Johnson
MIT License

Twemoji Country Flags

Copyright (c) 2022 TalkJS. Flag art from Twemoji, Copyright Twitter, Inc and other contributors, CC-BY 4.0
MIT License, CC-BY 4.0

Fonts, all under the SIL Open Font License 1.1: this site uses Geist and Instrument Serif; the chart uses Geist, Geist Mono and JetBrains Mono.

Instrument Serif

Copyright 2022 The Instrument Serif Project Authors (https://github.com/Instrument/instrument-serif)
SIL Open Font License 1.1

Geist, Geist Mono

Copyright 2024 The Geist Project Authors (https://github.com/vercel/geist-font)
SIL Open Font License 1.1

JetBrains Mono

Copyright 2020 The JetBrains Mono Project Authors (https://github.com/JetBrains/JetBrainsMono)
SIL Open Font License 1.1