File & Data Tools

View, edit and convert CSV, JSON, XML and Excel data locally.

CSV ViewerView CSV files as a clean table with correct RFC 4180 parsing.CSV EditorEdit CSV cells in a grid and export clean, correctly-escaped CSV.CSV to ExcelConvert CSV into a real .xls workbook with typed numeric cells.Excel to CSVRead .xlsx workbooks locally and export the first sheet as CSV.CSV to JSONConvert CSV rows into a JSON array with optional type inference.JSON to CSVFlatten a JSON array of objects into CSV with unioned columns.CSV to XMLConvert CSV rows into row elements with per-column tags.XML to CSVFlatten repeated XML elements into CSV rows.JSON to XMLConvert a JSON object into clean, escaped XML.TSV to CSVConvert tab-separated values into comma-separated CSV.CSV DeduplicatorRemove duplicate CSV rows by full comparison or a key column.CSV Column ExtractorPull one CSV column out as a plain list.JSON Table ViewerRender a JSON array of objects as a readable table.JSON DiffCompare two JSON documents structurally, path by path.

About these data tools

Data-format tools that never upload your files: a strict RFC 4180 CSV parser, real .xlsx reading, and JSON/XML conversions with correct quoting and escaping throughout.

Each tool is a small, focused utility with its own page, its own instructions and its own set of supported inputs. There is no account to create and no server-side processing step: the work happens on your device.