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About ConvertJSON.io

ConvertJSON.io is a collection of free, developer-focused tools for converting between common data formats. Whether you need to convert YAML to JSON, encode Base64, or decode URL parameters, we have you covered.

Our Mission

We built ConvertJSON.io because we were tired of hunting for reliable, ad-free conversion tools. Our goal is simple: provide fast, free, and privacy-respecting tools that just work.

Privacy First

All conversions happen entirely in your browser using JavaScript. Your converter input is not sent to a conversion server or placed in a URL. This substantially reduces payload exposure, but hosting requests and payload-free analytics still occur. Redact credentials and production secrets whenever a harmless sample will do.

Built for Developers

We designed these tools with developers in mind. That means:

  • Dark mode by default (because who codes in light mode?)
  • Keyboard shortcuts for power users
  • Clean, distraction-free interface
  • Monospace fonts for code readability
  • No sign-up required
  • No usage limits

Open and Transparent

We believe privacy claims should be specific and testable. Vercel Web Analytics measures pageviews and a small allowlist of tool events; those events contain route identifiers, coarse size buckets, and fixed option labels, never converter input, output, filenames, or raw errors. See the full privacy and telemetry model for the exact fields and browser-storage behavior.

Questions or Feedback?

If you have suggestions for new tools, find a bug, or just want to say hi, we would love to hear from you. These tools are built for the developer community, and your feedback helps us improve.