Open-source software we use

Our tools can run in your browser thanks to these open-source projects. Thank you to everyone who builds them.

PDF tools

pdf-libMIT
fontkit (@pdf-lib/fontkit)MIT
PDF.jsApache-2.0
qpdfApache-2.0
qpdf-wasmISC
fflateMIT

Thai OCR

Tesseract.jsApache-2.0
Tesseract.js-core (Tesseract OCR)Apache-2.0
Tesseract language data (tessdata_best, Thai & English)Apache-2.0

Video, audio & images

MediabunnyMPL-2.0
@mediabunny/mp3-encoderMPL-2.0
LAME MP3 Encoder 3.100LGPL
gifencMIT

MP3 conversion uses the LAME MP3 Encoder (LGPL), compiled to WebAssembly by @mediabunny/mp3-encoder. We have not modified LAME. Download the LAME source code

Calculations

decimal.jsMIT
ZodMIT

The website

Next.jsMIT
ReactMIT
next-intlMIT
markedMIT

Interface & animation

three.jsMIT
React Three FiberMIT
dreiMIT
MotionMIT
class-variance-authorityApache-2.0
Radix UIMIT
Lucide iconsISC

Fonts

Kanit (font)OFL-1.1
Charmonman (font)OFL-1.1
Sriracha (font)OFL-1.1

Exchange-rate data

Frankfurter (exchange-rate API)MIT

Exchange-rate figures belong to the Bank of Thailand and the European Central Bank. We always show the source and say when a figure is a derived cross rate.

If you maintain one of these projects and we credit it incorrectly, tell us and we will fix it straight away.