Datalensia lets you load CSV, JSON, or NDJSON files and interactively explore, filter, and visualize your data directly in the browser. Build complex transformations, generate flowcharts or Mermaid diagrams, validate JSON with detailed errors, take workspace notes in Markdown, and organize projects with folders. All processing happens locally, keeping your data private.
Hi! 👋 I’m a developer and built Datalensia as a side project in my free time. It started from the frustration of exploring large or nested JSON or CSV datasets just by reading raw text.
Datalensia lets you explore, filter, and visualize data directly in the browser — including transformations, Mermaid/flow diagrams, JSON validation, and workspace notes. Everything runs 100% client-side, so your data never leaves your browser.
I’d love to hear how you’d use it and what features would make it even better!
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