Copy Paste Converter Hub

Noticed most online converter tools are bloated with ads, require sign-ups, and send data to servers. Decided to build a privacy-first alternative.

Surveyed popular converter tools and identified the most-used utilities: JSON formatter, Base64 encoder, URL decoder, timestamp converter. Prioritised client-side-only processing.

Chose Next.js with TypeScript for type safety and SSG. Designed the minimal, distraction-free UI using a CSS variable design system with dark mode support.

Implemented JSON formatter/validator, Base64 encode/decode, and URL encode/decode — all running purely in the browser with zero server calls.

Added Unix timestamp converter and MD5/SHA hash generators. Implemented copy-to-clipboard with user feedback toasts.

Added keyboard shortcuts, responsive layouts for mobile, and ARIA labels. Introduced smooth transitions between tools.

Tested all converters with malformed inputs, empty strings, extremely large payloads, and Unicode edge cases. Fixed whitespace handling in JSON formatter.

Configured converterhub.dev custom domain, added meta tags, sitemap, and robots.txt. Structured data for rich search results.

Deployed to Vercel with the custom domain. Open-sourced the codebase on GitHub. Shared with developer communities for feedback.

Received feature requests for colour converters and regex testers. Improved performance by lazy-loading tool components.