About ConverterHub
A small, free collection of developer tools that run entirely in your browser. No sign-ups, no ads, no server round-trips.
Why it exists
Most online developer tools are a race to the bottom: ad-heavy pages that send your input through four analytics platforms before returning a result. ConverterHub is a counter-argument. Every conversion — JSON, JWT, Base64, timestamps, UUID — runs locally using standard Web APIs. There is no backend. Your inputs never leave your browser.
How it's built
The site is a static export of a Next.js build. It is a handful of HTML, CSS, and JS files served from a CDN. Fast to load, resilient on weak connections, and cheap to host.
Where a specification exists — RFC 3339 for timestamps, RFC 7519 for JWTs, RFC 4648 for Base64, WHATWG for URL encoding — we follow it. Where a spec is ambiguous, we pick the most common correct interpretation and document it on the tool's page.
Who makes it
Maintained by Shubham Singla. If a tool is wrong, slow, or missing a feature you'd use, please open an issue on GitHub.
Principles
- Privacy by default. Nothing you paste is transmitted.
- Free, forever. No paywall, no “pro” tier.
- Fast. Static pages, minimal JavaScript.
- Standards-first. When a spec exists, follow it.