Dev.to
7/17/2026

The original headline is about online JSON converters potentially uploading your data and how to stay safe.
Original: That online JSON converter you paste prod data into? It's uploading it.
Short summary
Many online JSON-to-YAML/CSV converters secretly POST your data to backend servers, exposing sensitive information like API keys and customer emails. The article recommends using terminal tools (jq, yq), VS Code extensions, or client-side web tools that process data entirely in the browser. The author promotes their own tool, EasyFormatConverter, as a 100% client-side alternative, though this constitutes significant self-promotion within the piece.
- •Online JSON converters often upload your data to backend servers
- •Use terminal tools (jq, yq) or client-side web tools for sensitive data
- •Test client-side behavior by going offline in DevTools
Generated with AI, which can make mistakes.
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