DataLensia

DataLensia is a privacy-focused, client-side data analysis and JSON toolkit that runs entirely in your browser. It allows users to upload and explore CSV, JSON, and NDJSON files with interactive charts, filtering, sorting, and AI-assisted insights — without sending data to external servers.

Beyond data visualization, DataLensia includes a complete set of JSON utilities designed for developers and data professionals:

JSON Comparator – Compare two JSON files and instantly detect structural or value differences.

JSON Schema Generator – Automatically generate JSON Schema definitions from your data.

JSON Editor – View, edit, and validate JSON in a structured and user-friendly interface.

JSON Converter – Convert JSON to other formats and transform data structures easily.

JSON Transform Builder – Build powerful field-mapping pipelines with a visual interface. Define source-to-target mappings, apply chained operations, preview input/output values inline, and inspect data in detail through a dedicated Data View panel. Transformation configs persist automatically within your workspace session.

JSON Visualizer – Explore JSON data through multiple interactive visualization modes, including tree view, table view, node graph, and flow diagrams. Features keyboard navigation, fullscreen support, and action buttons with tooltips for a streamlined experience.

JSON Validator – Validate the syntax and structure of JSON documents, with auto-fix capabilities to automatically correct common formatting errors and ensure your JSON is well-formed.

Mermaid Diagram Generator – Convert JSON data into Mermaid diagrams for quick visual documentation.

Workspace Manager – Organize and persist multiple JSON datasets within a single session. Quickly switch between workspaces, with auto-save support across the editor, transformation builder, and notes panel.

Share via Link – Generate compressed, shareable URLs for your JSON data using LZ-string encoding, making it easy to share small-to-medium JSON payloads without any server-side storage.

All processing happens locally in the browser, ensuring maximum privacy and security. DataLensia is ideal for developers, analysts, and businesses who need powerful data exploration and JSON tooling without compromising sensitive information.