In-Browser Data Workbench & Developer Tools
Inspect, convert, and query CSV, Excel, Apache Parquet, TSV, and JSON with DuckDB-Wasm and SheetJS. Plus client-side video and image compressors. Zero server uploads.
Spreadsheet Viewers & Data Converters
Universal Data Converter
Convert between CSV, Excel, Apache Parquet, and JSON with ZSTD compression.
CSV Spreadsheet Viewer
Open, search, sort, and filter large CSV files in browser memory.
Excel (.xlsx) Viewer
Preview multi-sheet Excel workbooks without Microsoft Office or 365.
JSON to CSV Converter
Convert nested JSON records and API responses into flat CSV tables.
JSON to Excel (.xlsx)
Export JSON data to styled multi-column Excel workbooks instantly.
Excel to JSON Converter
Extract sheets from Excel files into formatted JSON datasets.
TSV Tab-Separated Viewer
Inspect bioinformatics and raw server log TSV files with auto-detection.
Big Data Analytics & SQL Engines
Apache Parquet Viewer
Inspect columnar Parquet schemas, row groups, and metadata directly.
GeoParquet GIS Viewer
Preview geospatial Parquet layers and geometries in the browser.
DuckDB SQL Console
Execute analytical SQL queries directly against local files with zero latency.
JSON Formatter & Prettifier
Format, validate, minify, and clean nested JSON data structures.
SQL Query Formatter
Beautify and standardize complex SQL dialects cleanly.