Credits

Almost everything on MakerBox is our own code, but a few tools stand on work made by other people and projects — a background-removal model, an OCR engine, the fonts a PDF needs to hold Korean text, a 3D engine, the map data behind two tools, and the reference tables some tools answer from. This page names every one of them, with its licence. Open-source npm packages bundled into the site itself are listed separately, at /licenses.txt.

Models

• U²-Netp — the background-removal model bundled with the site and downloaded once. From the U²-Net project (Xuebin Qin et al.), licensed Apache License 2.0.
• BEN2 — the higher-accuracy background-removal model, fetched from Hugging Face only if you choose it. From PramaLLC, licensed MIT.
• PaddleOCR (PP-OCRv5) — reads Korean and other non-English text in the OCR tools. From the PaddleOCR project(PaddlePaddle), licensed Apache License 2.0.
• Tesseract — reads English text in the OCR tools, run in the browser through tesseract.js. Licensed Apache License 2.0.

Fonts

Building a PDF with Korean, Japanese or Chinese text embeds a real typeface rather than a picture of one. The 12 font families bundled for that are below, each under the SIL Open Font License 1.1 — the link on each name is that font's own licence file.

• Nanum Gothic
• Noto Sans KR
• Gothic A1
• Nanum Myeongjo
• Noto Serif KR
• Nanum Gothic Coding
• Nanum Pen Script
• Jua
• Do Hyeon
• Black Han Sans
• Noto Sans JP
• Noto Sans SC

One more font ships with the site outside that PDF list: Patrick Hand, used by the handwriting-simulation tool to draw its strokes. It is subset to printable ASCII and embedded directly in that tool's own code as a base64 webfont, rather than kept as a separate file. Same licence — SIL Open Font License 1.1.

FIGlet fonts

The ASCII banner tool ships the 331 FIGfonts distributed with thefiglet.js library (MIT License). Each of those 331 font files carries its own author and terms inside it, in the long-standing tradition of the FIGlet font format, rather than one licence covering all of them.

Cesium

The 3D tiles viewer is built on CesiumJS, licensed Apache License 2.0; its licence text ships with the site at/cesium/LICENSE.md.

Map data

• OpenStreetMap. The coordinate converter and the 3D tiles viewer draw their map tiles from OpenStreetMap: © OpenStreetMapcontributors, available under the Open Database License (ODbL).
• VWorld. The 3D tiles viewer's satellite and hybrid basemaps use map tiles fromVWorld, the Korean government's national spatial-data platform.

Reference data

These tools answer from a table somebody else maintains. Each table is generated into this site's own code rather than fetched while you use it, so it ships with the page — which is why it belongs on this list and not in the browser's network tab.

• IEEE OUI registry. The MAC address lookup reads theIEEE Registration Authority's public MA-L listing — the vendor names and the addresses they registered. The IEEE publishes those files for public lookup and attaches no licence or terms to them.
• Unicode Character Database. The Unicode inspector names characters from UnicodeData.txt in Unicode 17.0. © 1991–2026 Unicode, Inc., underUnicode License v3.
• IANA media types. The MIME type lookup reads its extension-to-type table frommime-db 1.54.0 (MIT License), which assembles the IANA registrywith Apache's and nginx's lists.
• ISBN registration ranges. The ISBN validator knows where an ISBN's hyphens go from the International ISBN Agency's RangeMessage, taken fromisbn3 2.0.11 (MIT License).
• EGM2008 geoid. The coordinate converterand the 3D tiles viewer turn a Korean survey height into a GPS height with a 0.1° grid over Korea sampled from theEGM2008 geoid model of the U.S. National Geospatial-Intelligence Agency (public domain), throughPROJ's network grids.
• Appliance wattages. The table under theelectricity cost calculator is Virginia Cooperative Extension's"Estimating Appliance and Home Electronic Energy Use" (publication 2901-9014, 2020), which its publisher makes available for reprint with credit.
• Emoji names. The emoji picker's English names are the Unicode short names from CLDR andUTS #51, © Unicode, Inc., underUnicode License v3; the Korean names are our own.
• EFF Long Wordlist. The password generator's long passphrase list is the 7,776-word EFF Long Wordlist (Joseph Bonneau, Electronic Frontier Foundation, 2016), under theCreative Commons Attribution 4.0 licence (EFF's terms).
• Smaller published tables are credited on the tool that uses them: King Arthur Baking's ingredient weight chart in the cooking converter, StrengthLog's warm-up protocol in the one-rep max calculator, the Jackson & Pollock and ACE tables in thebody fat calculator, and caniuse's support data inline clamp.

Questions or corrections about anything on this page go toeogkr.kim@gmail.com.