Next-gen solutions. WebPDF: web components. RTCode.io: HTML/CSS/JS playground with instant editor ↔ output sync℠.

Elefunc, Inc. →

We build next-gen solutions for a brighter web.


The no-reload web playground with two-way real-time editor ⇄ output sync.

👉🏻 try the same yourself live 👈🏻

Product website


Professional PDF web components in the form of HTML custom elements.

With their declarative HTML API, our components make adding PDFs to your websites easier than ever. Our components are dependency-free. They become a truly seamless part of your HTML document: no-<iframe>s, no arbitrarily complex JavaScript APIs. What takes hundreds of lines with other solutions is just a single line or two with ours!

Product website


We speak English, German and Korean.



Our icons, logos and wordmarks are hand-crafted in-house using interactive programmatic exploration. Creative inspirations come from everyday life.


We believe in and build with utmost minimalism. None of our products use third-party frameworks, build tools or bundlers. Every single line of code is either first-party or very carefully vetted. We deliver clean and concise developer and user experiences.

We take more pride
in the lines of code
we remove than add.


The web has loads of cruft. For most companies, maintaining bad software takes precedence over innovating new solutions. The ever-improving potential of the web is left largely unexplored.

We start with the wonderfully fresh mindset of babies and we value minimalism over everything else. This puts us into the unique position of being able to walk new paths and find brand new core ideas that power our innovative products.