What PDF Shortener is built with, and the credit each part asks for.
We only use free software and free fonts that allow use on a public website, also for business. We do not use code under GPL, AGPL or non-commercial licences. The full licence texts are in the file /licences.txt.
pdf-lib, @pdf-lib/fontkit, @pdf-lib/standard-fonts and @pdf-lib/upng (MIT, by Andrew Dillon and others). pako (MIT and Zlib). PDF.js (Apache 2.0, by Mozilla and contributors). jsQR (Apache 2.0, by Cosmo Wolfe) for reading QR codes. React and React DOM (MIT, Meta and contributors). regenerator-runtime (MIT). tslib (0BSD, Microsoft).
DM Sans and Manrope for the site (SIL Open Font License 1.1, from the Fontsource project). Noto Sans and Noto Sans Devanagari inside the PDFs we create (SIL Open Font License 1.1, Google). These fonts are free to use and embed. We do not sell them on their own.
The name, logo, icons, texts and design of this site are our own. We do not copy text, pictures or designs from other websites, and we do not use another company's name or logo as ours. Other product names on this site (such as PDF, Word, Excel, PowerPoint, JPG, WebP) belong to their owners and are used only to say what a tool opens or makes. We are not connected to them.
PDF is an open standard (ISO 32000). QR Code is a registered trademark of DENSO WAVE INCORPORATED. The QR Code standard itself is free to use.