Data Tools
16 tools · 16 available now
View, filter, convert, and analyse CSV, JSON, and spreadsheet data without sending a single row to a server.
CSV Viewer & Editor
View and edit CSV files in a clean table.
CSV to Table Converter
Convert CSV data into an HTML table.
CSV Column Extractor
Extract specific columns from a CSV file.
CSV Merger
Merge several CSV files into one.
CSV Row Filter
Filter CSV rows by custom conditions.
CSV to Markdown Table
Convert CSV data into a Markdown table.
Markdown Table to CSV
Convert a Markdown table back into CSV.
JSON Tree Viewer
Explore JSON in a collapsible tree view.
JSON to TypeScript
Generate TypeScript interfaces from JSON.
CSV Statistics
Compute statistics for each column of a CSV.
Excel Formula Evaluator
Evaluate Excel-style formulas in your browser.
JSON to Excel
Convert JSON data into a downloadable Excel file.
Table Generator
Build tables and export them as HTML, Markdown, or CSV.
Data Anonymizer
Replace names and emails in data with safe placeholders.
List to CSV Converter
Convert a plain list into CSV rows.
Statistics Calculator
Calculate mean, median, mode, and standard deviation.
About data tools
Spreadsheets and data exports frequently hold customer records, financials, and other confidential information. ToolJutsu's data tools let you view and edit CSV files, extract and filter columns, merge datasets, convert between CSV, JSON, Markdown, and Excel, compute per-column statistics, and anonymise sensitive fields. Every operation runs in your browser, so an exported customer list processed in ToolJutsu never leaves your machine.
Every tool in this category runs entirely on your device. Your files and inputs are never uploaded to a server — there is no server in the loop that touches your data. That makes ToolJutsu a genuinely private way to get everyday tasks done. New tools in this category go live as the project progresses; cards marked “Soon” are on the roadmap.