Free JSON formatter, validator and converter
JSON Operations is a free online JSON formatter, validator and converter toolkit that runs 100% in your browser. Your data never leaves your device.
It includes 10 tools: a JSON formatter with beautify, minify, stringify and tree view modes, a real-time JSON validator with error highlighting, and converters for JSON to CSV, JSON to XML, JSON to YAML, YAML to JSON, XML to JSON, CSV to JSON, JSON to Table and a mock JSON data generator.
Built for developers, data analysts and DevOps engineers who work with JSON daily. No signup required. No usage limits. No ads. No cookies. No backend. Completely free forever.
We built this at Nomos Insights because we were tired of pasting sensitive API data into random online tools that send everything to their servers. JSON Operations processes everything locally using client-side JavaScript.
Try it: https://jsonoperations.com
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Comments
10Clean, privacy-first approach is a big win here, running everything locally with no signup or tracking is genuinely valuable for dev workflows. Having all the common JSON tools in one place is super practical. If performance holds up with large files, this could easily become a go-to utility.
Founder @ZemryX, Prdouct desginer (UX/UI)
Perfect for DevOps engineers and Data Analysts who need a reliable, "no-nonsense" tool for daily tasks.
a much needed tool, will definitely give it a try
Live Your Book helps you capture meaningful life stories through guided prompts and turn them into a lasting keepsake book for family and loved ones.
Love how simple and focused this is. JSON handling is something devs deal with constantly, and having a clean way to manage operations without overcomplication is super valuable.
Clean, privacy-first approach is a big win here, running everything locally with no signup or tracking is genuinely valuable for dev workflows.
Really useful for developers who need quick JSON validation without installing anything. The no-account approach is exactly what utility tools should do.
Building KeywordsDB
The UI is super clean, you can see it was a lot of work, congrats!
Co-Founder of Hexcore Mounts and Co creator of the 2A Tool Hub and The Vault by Hexcore Mounts
This would have come in handy building our Firearm and accessories database. We will definitely use it for future products. Thank you for creating this.
20+ years in web development focused on reliability, performance, and user-centric design.
Nice and useful tool!
It looks good, but there are already many such tools on the market.